TITLE: METHOD AND SYSTEM FOR CONTROLLING SPEED OF A BLOWER UNIT IN A VEHICLE TECHNICAL FIELD [0001] The present subject matter is related in general to control systems implemented in a vehicle, more particularly, but not exclusively the present subject matter relates to method and system for controlling speed of a blower unit in a vehicle. BACKGROUND [0002] Currently, many vehicles are integrated with Intelligent Alternator Control (IAC) and Engine Stop Start (ESS) to improve engine fuel consumption. The IAC is a smart alternator which allows vehicles to control output voltage from a battery based on vehicle operating conditions. The vehicle operating conditions may include braking condition, charging mode, acceleration mode, deceleration mode and so on. Battery voltage refers to difference in electric potential between positive terminal and negative terminal of the battery of the vehicle. The battery voltage of the vehicles may vary between 12 volts to 16 volts based on different operation modes of the IAC. The different operation modes of the IAC include idle mode, charging mode and regeneration mode. During the vehicle braking, kinetic energy of the vehicle is used to charge the battery by operating the IAC between 14 volts to 16 volts. While the vehicle is in charging mode, the battery is charged by the IAC between 13.5 volts to 14 volts. When driver of the vehicle accelerates, the IAC assists engine of the vehicle by running in the idle mode. In the idle mode, the battery voltage reaches around 12 volts to 12.5 volts. Thus, vehicles with the IAC system suffer from intermittent fluctuations in the battery voltage between 12 volts to 16 volts. [0003] The vehicles may also be equipped with certain electric accessories which may run on voltage supply from the battery. The electric accessories may include Air Conditioner (AC) blower motor, radiator fan, head lights and so on. The AC blower motor turns blades of a fan which causes air to move through AC system. Nowadays, many vehicles are integrated with the AC system to maintain a comfortable environment for occupants in various climates. The radiator fan in the vehicles is used to pull cooling air through the vehicle radiator. The electric accessories equipped in the vehicle operates between a range of voltage including from 12 volts to 14 volts. Consider that the vehicle does not have a voltage stabilizer, which is used to regulate the voltage if the battery voltage fluctuates over a range. In such cases, if the battery voltage varies beyond the range, then the electric accessories give unintended performance. For example, speed of the AC blower motor depends on position of the blower selected by the driver. For each switch position, the AC blower motor operates at a desired speed. In order to operate the AC blower motor at the desired speed, the voltage across the AC blower motor should remain constant at predefined set voltage for respective position. However, if the battery voltage fluctuates due to the IAC operation modes, there is fluctuation in the AC blower motor speed. Thus, the change in the AC blower motor speed results in an irritating blower noise inside passenger compartment. [0004] In conventional systems, the irritating blower noise may be eliminated by using voltage stabilizer. The voltage stabilizer regulates the voltage across the battery to maintain a constant voltage across the AC blower motor. However, use of the voltage stabilizer increases cost of the vehicle. Also, the conventional systems may not consider the IAC operation modes while regulating the battery voltage. Thus, there exists a need for a system that eliminates the blower noise without the use of the voltage stabilizer and also considers the IAC operation modes while regulating the battery voltage. [0005] The information disclosed in this background of the disclosure section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art. SUMMARY [0006] In an embodiment, the present disclosure relates to a method for controlling speed of a blower unit in a vehicle. The method comprises to receive a present blower motor speed and/or a present blower motor voltage associated with a motor of a blower unit in the vehicle, present blower switch position signal from driver, present battery voltage outputted by a 12V battery of the vehicle, and present operation mode data of an Intelligent Alternator Control (IAC) of the vehicle. Upon receiving, the method comprises to calculate Pulse Width Modulation (PWM) signal for obtaining desired blower motor speed based on experimental co-relation map. The experimental co-relation map indicates relation between battery voltage, blower motor speed and blower motor PWM. Further, blower motor PWM signal is corrected using difference between the present blower motor speed and the desired blower motor speed. The method comprises to calculate the desired blower motor speed based on the present blower switch position, the present battery voltage, present operation mode data and the experimental co-relation map. Upon calculating the PWM signal, the method comprises to provide the PWM signal to the blower motor to control speed of the blower unit in the vehicle. [0007] In an embodiment, the present disclosure relates to a blower control unit for controlling speed of a blower unit in a vehicle. The blower control unit includes a processor and a memory communicatively coupled to the processor. The memory stores processor-executable instructions, which on execution cause the processor to control the speed of the blower unit. The blower control unit receives a present blower motor speed and/or a present blower motor voltage associated with a motor of the blower unit in the vehicle, present blower switch position signal from driver, present battery voltage outputted by a 12V battery of the vehicle, and present operation mode data of an Intelligent Alternator Control (IAC) of the vehicle. Upon receiving, the blower control unit calculates Pulse Width Modulation (PWM) signal for obtaining desired blower motor speed based on experimental co-relation map. The experimental co-relation map indicates relation between battery voltage, blower motor speed and blower motor PWM. Further, blower motor PWM signal is corrected using difference between the present blower motor speed and the desired blower motor speed. The blower control unit calculates the desired blower motor speed based on the present blower switch position, the present battery voltage, present operation mode data and the experimental co-relation map. Upon calculating the PWM signal, the blower control unit provides the PWM signal to the blower motor to control speed of the blower unit in the vehicle. [0008] In an embodiment, the present disclosure relates to a method for controlling speed of a blower unit in a vehicle. The method comprises to receive a present blower switch position signal from driver, present battery voltage outputted by a 12V battery of the vehicle, and present operation mode data of an Intelligent Alternator Control (IAC) of the vehicle. Upon receiving, the method comprises to calculate Pulse Width Modulation (PWM) signal for obtaining desired blower motor speed based on experimental co-relation map. The experimental co-relation map indicates relation between battery voltage, blower motor speed and blower motor PWM. Further, the method comprises to calculate the desired blower motor speed based on the present blower switch position, the present battery voltage, present operation mode data and the experimental co- relation map. Upon calculating the PWM signal, the method comprises to provide the PWM signal to the blower motor to control speed of the blower unit in the vehicle. [0009] In an embodiment, the present disclosure relates to a blower control unit for controlling speed of a blower unit in a vehicle. The blower control unit includes a processor and a memory communicatively coupled to the processor. The memory stores processor-executable instructions, which on execution cause the processor to control the speed of the blower unit. The blower control unit receives a present blower switch position signal from driver, present battery voltage outputted by a 12V battery of the vehicle, and present operation mode data of an Intelligent Alternator Control (IAC) of the vehicle. Upon receiving, the blower control unit calculates Pulse Width Modulation (PWM) signal for obtaining desired blower motor speed based on experimental co- relation map. The experimental co-relation map indicates relation between battery voltage, blower motor speed and blower motor PWM. Further, the blower motor unit calculates the desired blower motor speed based on the present blower switch position, the present battery voltage, present operation mode data and the experimental co-relation map. Upon calculating the PWM signal, the blower control unit provides the PWM signal to the blower motor to control speed of the blower unit in the vehicle. [0010] The foregoing summary is illustrative only and is not intended to be in any way limiting. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features will become apparent by reference to the drawings and the following detailed description. BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS [0011] The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate exemplary embodiments and, together with the description, serve to explain the disclosed principles. In the figures, the left-most digit(s) of a reference number identifies the figure in which the reference number first appears. The same numbers are used throughout the figures to reference like features and components. Some embodiments of system and/or methods in accordance with embodiments of the present subject matter are now described, by way of example only, and regarding the accompanying figures, in which: [0012] Figure 1 shows an exemplary environment of a blower control unit for controlling speed of a blower unit in a vehicle, in accordance with some embodiments of the present disclosure; [0013] Figure 2 shows a detailed block diagram of a blower control unit for controlling speed of a blower unit in a vehicle, in accordance with some embodiments of the present disclosure; [0014] Figures 3a and 3c illustrate block diagrams showing an exemplary method for controlling speed of a blower unit in a vehicle, in accordance with some embodiments of present disclosure; [0015] Figures 3b and 3d illustrate flow diagrams showing an exemplary method for controlling speed of a blower unit in a vehicle, in accordance with some embodiments of present disclosure; [0016] Figures 3e, 3f and 3g illustrate flowcharts showing exemplary methods for calculating PWM signal to control speed of a blower unit in a vehicle, in accordance with some embodiments of present disclosure; and [0017] Figure 4 illustrates a block diagram of an exemplary computer system for implementing embodiments consistent with the present disclosure. [0018] It should be appreciated by those skilled in the art that any block diagrams herein represent conceptual views of illustrative systems embodying the principles of the present subject matter. Similarly, it will be appreciated that any flow charts, flow diagrams, state transition diagrams, pseudo code, and the like represent various processes which may be substantially represented in computer readable medium and executed by a computer or processor, whether such computer or processor is explicitly shown. DETAILED DESCRIPTION [0019] In the present document, the word "exemplary" is used herein to mean "serving as an example, instance, or illustration." Any embodiment or implementation of the present subject matter described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. [0020] While the disclosure is susceptible to various modifications and alternative forms, specific embodiment thereof has been shown by way of example in the drawings and will be described in detail below. It should be understood, however that it is not intended to limit the disclosure to the forms disclosed, but on the contrary, the disclosure is to cover all modifications, equivalents, and alternative falling within the spirit and the scope of the disclosure. [0021] The terms “comprises”, “comprising”, or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a setup, device, or method that comprises a list of components or steps does not include only those components or steps but may include other components or steps not expressly listed or inherent to such setup or device or method. In other words, one or more elements in a system or apparatus proceeded by “comprises… a” does not, without more constraints, preclude the existence of other elements or additional elements in the system or method. [0022] The terms “includes”, “including”, or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a setup, device, or method that includes a list of components or steps does not include only those components or steps but may include other components or steps not expressly listed or inherent to such setup or device or method. In other words, one or more elements in a system or apparatus proceeded by “includes… a” does not, without more constraints, preclude the existence of other elements or additional elements in the system or method. [0023] In the following detailed description of the embodiments of the disclosure, reference is made to the accompanying drawings that form a part hereof, and in which are shown by way of illustration specific embodiments in which the disclosure may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the disclosure, and it is to be understood that other embodiments may be utilized and that changes may be made without departing from the scope of the present disclosure. The following description is, therefore, not to be taken in a limiting sense. [0024] Present disclosure relates to a blower control unit for controlling speed of a blower unit in a vehicle. The proposed unit is configured to receive information related to blower motor of a blower unit, position of a blower switch, battery voltage and present operation mode of an IAC. Upon receiving, the proposed unit calculates PWM signal to obtain desired blower motor speed. The desired blower motor speed is calculated based on the information received by the proposed unit. The proposed unit provides the calculated PWM signal to the blower motor to control speed of the blower unit. By the proposed unit, the blower unit speed stabilization is achieved, and irritating noise caused by the blower motor is eliminated. [0025] Figure 1 shows an exemplary environment 100 of a blower control unit 101 for controlling speed of a blower unit in a vehicle. The exemplary environment 100 may include the blower control unit 101, a blower motor 102, a blower switch 103, an Intelligent Alternator Control (IAC) 104, a battery 105, a battery sensor 106 and a PWM unit 107. The environment 100 may be interior of the vehicle driven by driver. In an embodiment, the environment 100 may be interior of the vehicle, where the vehicle may be driven automatically. The vehicle may be a car, a taxi, a cab, a truck, a bus and so on. The proposed blower control unit 101 may be implemented in any vehicle which may be equipped with electric accessories and integrated with the IAC 104. For example, the vehicle may be a car used by an individual for driving from a source point to a destination point. The car may be equipped with an Air Conditioner (AC) for controlling temperature in compartment with occupants sitting in the car. Consider that driver stops the car by applying brakes, in such a case kinetic energy of the car is used to charge the battery 105 by operating the IAC 104 between 14 volts to 16 volts. Due to variation in voltage of the battery 105, speed of the blower unit of the AC may also fluctuate. Further, the fluctuation of the speed of the blower unit causes an irritating noise or discomfort to the occupants sitting in the car. In an embodiment, the blower unit may include, but is not limited to, the blower motor 102, radiator and so on. The proposed blower control unit 101 desires to eliminate or reduce the irritating noise caused due to fluctuation of the speed of the blower unit. [0026] The blower control unit 101 may be in communication with the blower motor 102, the blower switch 103, the IAC 104, the battery 105, the battery sensor 106 and the PWM unit 107 for controlling speed of the blower unit in the vehicle. In an embodiment, the blower control unit 101 may communicate with the blower motor 102, the blower switch 103, the IAC 104, the battery 105, the battery sensor 106 and the PWM unit 107 via a communication network (not shown in Figure 1). In an embodiment, the blower control unit 101 may communicate with each of the blower motor 102, the blower switch 103, the IAC 104, the battery 105, the battery sensor 106 and the PWM unit 107 via a dedicated communication network. In an embodiment, the communication network (not shown in Figure 1) may include, without limitation, a direct interconnection, Local Area Network (LAN), Wide Area Network (WAN), Controller Area Network (CAN), wireless network (e.g., using Wireless Application Protocol), the Internet, and the like. [0027] The blower control unit 101 may include a processor 108, I/O interface 109, and a memory 110. In some embodiments, the memory 110 may be communicatively coupled to the processor 108. The memory 110 stores instructions, executable by the processor 108, which, on execution, may cause the blower control unit 101 to control speed of the blower unit in the vehicle, as disclosed in the present disclosure. In an embodiment, the memory 110 may include one or more modules 111 and data 112. The one or more modules 111 may be configured to perform the steps of the present disclosure using the data 112, for controlling speed of the blower unit in the vehicle. In an embodiment, each of the one or more modules 111 may be a hardware unit which may be outside the memory 110 and coupled with the blower control unit 101. The blower control unit 101 may be implemented in a variety of computing systems, such as a laptop computer, a desktop computer, a Personal Computer (PC), a notebook, a smartphone, a tablet, e-book readers, a server, a network server, a cloud-based server and the like. In an embodiment, the blower control unit 101 may be a dedicated server implemented inside the vehicle. In an embodiment, the blower control unit 101 may be a cloud-based server. In an embodiment, the blower control unit 101 may be associated with multiple vehicles. In such embodiment, the blower control unit 101 may communicate with each of the multiple vehicles to control speed of the blower unit in respective vehicle. [0028] In an embodiment, the blower control unit 101 may be configured to receive a present blower motor speed and/or a present blower motor voltage relating to a blower motor 102 of a blower unit in the vehicle. In an embodiment, the present blower motor speed may be a speed value at which the blower motor 102 may be running. In an embodiment, the present blower motor voltage may be a voltage value which may be supplied to the blower motor 102 for running. The blower motor 102 may be a part of the blower unit which rotates blower fan that causes air to move through the AC system of the vehicle. In an embodiment, the blower control unit 101 may also be configured to receive present blower switch position data or signal of the blower switch 103 from driver of the vehicle. The blower motor 102 speed depends on the position of the blower switch 103. In an embodiment, for every position of the blower switch 103, the blower motor 102 comprises a corresponding speed value. For example, consider for first position of the blower switch 103, the speed of the blower motor 102 may be 1000 RPM. Similarly, for second position of the blower switch 103, the speed of the blower motor 102 may be 2000 RPM. Similarly, for third position of the blower switch 103, the speed of the blower motor 102 may be 3000 RPM. Similarly, for fourth position of the blower switch 103, the speed of the blower motor 102 may be 4000 RPM. In an embodiment, values of the RPM may be referred as predefined speed value of the blower motor 102. Further, in an embodiment, the blower control unit 101 may be configured to receive present battery voltage from the battery 105. In an embodiment, the battery 105 may be a 12 volts battery of the vehicle. The present battery voltage may be a voltage value which may be outputted by the battery 105 at an instant of time. For example, consider the battery 105 outputs 12 volts when the AC of the vehicle is started. In an embodiment, the present battery voltage of the battery 105 may be sensed by the battery sensor 106. The battery sensor 106 may sense, or records voltage outputted by the battery 105. The voltage of the battery 105 refers to difference in electric potential between positive terminal and negative terminal of the battery 105 of the vehicle. In an embodiment, the blower control unit 101 may also be configured to receive present operation mode data of the IAC from the IAC 104. The present operation mode data may include information related to the operation modes such as idle mode, charging mode and regeneration mode. In an embodiment, the present operation data may include information related to transition of the operation mode of the IAC 104. The transition of the operation mode may include transition from the idle mode to regeneration mode or charging mode and transition from the regeneration mode or charging mode to the idle mode. In the idle mode, the IAC 104 may not provide load on engine of the vehicle. In the charging mode, the IAC 104 charges the battery 105 when the vehicle engine is running. In the regeneration mode, the IAC 104 recovers unused kinetic energy of the vehicle during deceleration. In an embodiment, the present operation mode of the IAC 104 may be used when position of the blower switch 103 may be in fourth position or above. Upon receiving information relating to the blower motor 102, the blower switch 103, the IAC 104 and the battery 105, the blower control unit 101 may be configured to calculate PWM signal. Upon calculating the PWM signal, the PWM unit 107 may be configured to receive the PWM signal from the blower control unit 101. In an embodiment, the PWM unit 107 uses the PWM signal to control power supply of the blower motor 102, such that speed of the blower unit is controlled in a desired manner. In an embodiment, the blower control unit 101 calculates the PWM signal for obtaining desired speed of the blower motor 102 based on an experimental co-relation map. The experimental co-relation map indicates relation between voltage of the battery 105, speed of the blower motor 102 and the PWM of the blower motor 102. In an embodiment, the experimental co- relation map is obtained by varying the voltage of the battery 105 between 10 volts to 16 volts and obtaining different PWM signals for the varying voltage. For the different PWM signals, the speed of the blower motor 102 may be varied as desired. For example, consider the PWM signal may be 80% duty cycle which indicates that voltage at the blower motor 102 may be 8 volts. Thus, speed of the blower motor 102 may be 500 RPM. In an embodiment, the calculated PWM signal may be corrected using difference between the present speed of the blower motor 102 and the desired speed of the blower motor 102 in case of closed loop control. The closed loop control is when the blower control unit 101 obtains feedback from the blower motor 102. In an embodiment, the feedback obtained from the blower motor 102 may include the present speed of the blower motor 102 and/or the present voltage of the blower motor 102. In an embodiment, calculation of the desired speed of the blower motor 102 depends on the present blower switch position data of the blower switch 103, the present battery voltage of the battery 105, the present operation mode of the IAC 104 and the experimental co-relation map. Upon calculating the PWM signal, the blower control unit 101 may be configured to provide the PWM signal to the PWM unit 107. In an embodiment, the PWM unit 107 may be configured to control the voltage at the blower motor 102 to control speed of the blower motor 102 in the vehicle. In an embodiment, the PWM unit 107 may be integrated in the blower control unit 101 to control speed of the blower motor 102 in the vehicle. [0029] In an embodiment, the blower control unit 101 may be configured to calculate the PWM signal based on the present position of the blower switch 103. In an embodiment, the present position of the blower switch 103 may be one of less than and equal to the third position. For example, consider the position of the blower switch 103 to be equal to the third position. In such cases, predefined speed of the blower motor 102 may be 3000 RPM for the third position. In an embodiment, the blower control unit 101 may be configured to calculate the desired speed of the blower motor 102 by selecting a minimum value of the RPM and value of achievable speed of the blower motor 102. The minimum value of the RPM may be the predefined speed of the blower motor 102 for the present position of the blower switch 103. In an embodiment, the blower control unit 101 simultaneously selects an achievable value of speed of the blower motor 102 in terms of the RPM based on present voltage of the battery 105. Upon calculating the desired speed, the blower control unit 101 may be configured to calculate the PWM signal. The PWM signal may be calculated based on the desired speed of the blower motor 102 and the present voltage of the battery 105 using a predefined duty map. In an embodiment, the predefined blower duty map may be alternatively referred as the experimental co-relation map. [0030] In an embodiment, the present position of the blower switch 103 may be equal to the fourth position or above. When the position of the blower switch 103 is equal to the fourth position, the predefined speed of the blower motor 102 may be 4000 RPM for the fourth position. Upon identifying the present position to be the fourth position, the blower control unit 101 may be configured to identify present operation mode of the IAC 104. In an embodiment, when the present operation mode of the IAC 104 is identified to be in the charging mode or the regeneration mode, the blower control unit 101 may be configured to calculate the desired speed of the blower motor 102 by selecting the minimum value of the RPM and value of achievable speed of the blower motor 102. The minimum value of the RPM may be the predefined speed of the blower motor 102 for the present position of the blower switch 103. In an embodiment, the present position of the blower switch 103 may be fourth position or above. In an embodiment, the blower control unit 101 simultaneously selects the achievable value of speed of the blower motor 102 in terms of the RPM based on present voltage of the battery 105. Upon calculating the desired speed, the blower control unit 101 may be configured to calculate the PWM signal. The PWM signal may be calculated based on the desired speed of the blower motor 102 and the present voltage of the battery 105 using the predefined duty map. [0031] In an embodiment, when the operation mode of the IAC 104 is identified to be in the idle mode, the blower control unit 101 may be configured to calculate the desired speed of the blower motor 102 by selecting value of achievable speed of the blower motor 102 in terms of the RPM. In an embodiment, when the IAC 104 is in the idle mode, voltage of the battery 105 may be low and the predefined speed of the blower motor 102 may not be achieved. In an embodiment, upon calculating the desired speed, the blower control unit 101 may be configured to calculate the PWM signal. The PWM signal may be calculated based on the desired speed of the blower motor 102 and the present voltage of the battery 105 using the predefined blower duty map. [0032] In an embodiment, when the present operation mode of the IAC 104 is identified to be in transition from the idle mode to the regeneration mode or the charging mode, the blower control unit 101 may be configured to calculate the desired speed of the blower motor 102. In an embodiment, the desired speed of the blower motor 102 is calculated by ramping up the RPM of the blower motor 102. In an embodiment, the RPM of the blower motor 102 may be less than predefined speed of the blower motor 102 due to low voltage of the battery 105. The blower control unit 101 ramps up the RPM to the predefined speed of the blower motor 102 for the fourth position of the blower switch 103 or above. Further, the blower control unit 101 may be configured to decide ramp-up rate of speed of the blower motor 102 based on comfortable speed transition and without any noticeable blower noise. Upon calculating the desired speed, the blower control unit 101 may be configured to calculate the PWM signal. The PWM signal may be calculated based on the desired speed of the blower motor 102 and the present voltage of the battery 105 using the predefined blower duty map. [0033] In an embodiment, when the operation mode of the IAC 104 is identified to be in transition from the regeneration mode or the charging mode to the idle mode, the blower control unit 101 may be configured to calculate the desired speed of the blower motor 102. In an embodiment, the desired speed of the blower motor 102 is calculated by ramping down the RPM of the blower motor 102. In an embodiment, the RPM of the blower motor 102 may be greater than or equal to predefined speed of the blower motor 102. The blower control unit 101 ramps down the RPM to the predefined speed of the blower motor 102 for the fourth position of the blower switch 103 or above. Further, the blower control unit 101 may be configured to decide ramp-down rate of speed of the blower motor 102 based on comfortable speed transition and without any noticeable blower noise. Upon calculating the desired speed, the blower control unit 101 may be configured to calculate the PWM signal. The PWM signal may be calculated based on the desired speed of the blower motor 102 and the present voltage of the battery 105 using the predefined blower duty map. [0034] Figure 2 shows a detailed block diagram of the blower control unit 101 for controlling speed of the blower unit in the vehicle, in accordance with some embodiments of the present disclosure. [0035] The data 112 and the one or more modules 111 in the memory 110 of the blower control unit 101 are described herein in detail. [0036] In one implementation, the one or more modules 111 may include, but are not limited to, an information reception module 201, a PWM calculation module 202, a speed control module 203, and one or more other modules 204, associated with the blower control unit 101. [0037] In an embodiment, the data 112 in the memory 110 may include motor speed data 205, motor voltage data 206, blower switch position data 207, battery voltage data 208, operation data 209, PWM data 210, predefined speed data 211, predefined blower duty map data 212, and other data 213 associated with the blower control unit 101. [0038] In an embodiment, the data 112 in the memory 110 may be processed by the one or more modules 111 of the blower control unit 101. In an embodiment, the one or more modules 111 may be implemented as dedicated units and when implemented in such a manner, said modules may be configured with the functionality defined in the present disclosure to result in a novel hardware. As used herein, the term module may refer to an Application Specific Integrated Circuit (ASIC), an electronic circuit, a Field-Programmable Gate Arrays (FPGA), Programmable System-on-Chip (PSoC), a combinational logic circuit, and/or other suitable components that provide the described functionality. [0039] One or more modules 111 of the blower control unit 101 function to control speed of the blower unit and eliminate or reduce noise of the blower motor 102 and provide comfort to passengers of the vehicle. Also, the one or more modules 111 of the blower control unit 101 function to increase fuel economy by decreasing electrical consumption of the blower unit in the vehicle. The one or more modules 111 along with the data 112, may be implemented in any system, for controlling speed of the blower unit in the vehicle. [0040] The blower control unit 101 may be configured to control the speed of the blower unit in the vehicle, when ignition of the vehicle may be ON and when the position of the blower switch 103 may be greater than or equal to one. In an embodiment, the vehicle may be without a voltage stabilizer, which is used to regulate the voltage if the voltage of the battery 105 fluctuates over a range. [0041] In an embodiment, Figure 3a shows a block diagram depicting closed loop control method for controlling speed of the blower unit in the vehicle. The block diagram of Figure 3a includes an information reception module 301, a PWM calculation module 302, a speed control module 303 and a blower motor 304. In an embodiment, steps of Figure 3b may be performed to control the speed of the blower unit in the vehicle based on the closed loop control. The information reception module 301 may be configured to receive the present blower switch position, present battery voltage, present operation mode data of the IAC 104 and the present blower motor speed. In an embodiment, the information reception module 301 may receive the present blower motor voltage from the blower motor 304. In an embodiment, upon receiving information from the information reception module 301, the PWM calculation module 302 may be configured to calculate the PWM signal. The PWM calculation module 302 calculates the PWM signal to control the voltage at the blower motor 304. In an embodiment, the speed control module 303 may be configured to control the speed of the blower motor 304 in the vehicle. The PWM signal may be calculated based on a feedback from the blower motor 304. The feedback of the blower motor 304 may include the present blower motor speed and/or the present blower motor voltage. Thus, a closed loop control to control the speed of the blower motor 304 based on the PWM signal may be achieved. [0042] At block 305 of Figure 3b, the information reception module 201 may be configured to receive the motor speed data 205, the motor voltage data 206, the blower switch position data 207, the battery voltage data 208 and the operation data 209. In an embodiment, the information reception module 201 receives the present blower motor speed and the present blower motor voltage from the blower motor 102. For example, consider the blower motor 102 speed is 2000 RPM and the blower motor 102 voltage is 12 volts, such information related to the blower motor 102 is received by the information reception module 201. In an embodiment, the present blower motor speed may alternatively be referred to as the motor speed data 205 and is stored in the memory 110. In an embodiment, the present blower motor voltage may alternatively be referred to as the motor voltage data 206 and is stored in the memory 110. [0043] The information reception module 201 may also be configured to receive the present blower switch position data or signal of the blower switch 103 of the blower unit from driver of the vehicle. In an embodiment, speed of the blower motor 102 depends on the position of the blower switch 103. In an embodiment, the information reception module 201 may not receive the present blower switch position data 207, if the blower switch 103 position is equal to zero. In an embodiment, the blower switch 103 may be a knob which may be turned to different position based on choice of user or driver of the vehicle. For example, consider position of the knob is at first position and user wants to increase speed of the blower fan in the vehicle. In such case, the user may turn the knob to either second position, third position, fourth position or above. In an embodiment, for every position of the blower switch 103, the blower motor 102 comprises a corresponding speed value. The position of the blower switch 103 may include the first position with the speed value of 1000 RPM, the second position with the speed value of 2000 RPM, the third position with the speed value of 3000 RPM and the fourth position with the speed value of 4000 RPM. Consider the position of the blower switch 103 may be at the second position. In such a case, the speed of the blower motor 102 may be 2000 RPM. In an embodiment, the position of the blower switch 103 is referred as the blower switch position data 207 and stored in the memory 110. In an embodiment, the speed value of the blower motor 102 corresponding to each position of the blower switch 103 may be alternatively referred to as the predefined speed data 211 and stored in the memory 110. [0044] Further, the information reception module 201 may be configured to receive the present battery voltage of the battery 105 of the vehicle. In an embodiment, the voltage outputted by the battery 105 may be the present battery voltage. The present battery voltage may alternatively be referred to as the battery voltage data 208 and stored in the memory 110. In an embodiment, the present battery voltage of the battery 105 may vary depending on the present operation mode data of the IAC 104. For example, the voltage of the battery 105 may vary between 12 volts to 12.5 volts during the idle mode of the IAC 104. The voltage of the battery 105 may vary between 13.5 volts to 14 volts during the charging mode of the IAC 104. The voltage of the battery 105 may vary between 14 volts to 16 volts during the regeneration mode of the IAC 104. Since, the voltage of the battery 105 varies depending on the operation mode of the IAC 104, the speed value of the blower motor 102 also varies. [0045] In an embodiment, the information reception module 201 may also be configured to receive present operation mode data of the IAC 104 of the vehicle. The present operation mode data may indicate one of the operation modes of the IAC 104, which include idle mode, charging mode, and regeneration mode. In an embodiment, the present operation mode data is referred as the operation data 209 and is stored in the memory 110. The information reception module 201 receives the operation data 209 when position of the blower switch 103 may be the fourth position or above. [0046] At block 306 of Figure 3b, the PWM calculation module 202 may be configured to calculate the PWM signal. Upon receiving information from the information reception module 201, the PWM calculation module 202 may be configured to calculate the PWM signal for obtaining desired speed of the blower motor 102 based on the experimental co-relation map. In an embodiment, the experimental co-relation map indicates relation between the voltage of the battery 105, the speed of the blower motor 102 and the PWM of the blower motor 102. For example, consider the experimental co-relation map may indicate that when the voltage of the battery 105 may be 12 volts the PWM signal may be 90% duty cycle and speed of the blower motor 102 may be 2000 RPM. In an embodiment, the PWM signal may be corrected using difference between the present speed of the blower motor 102 and the desired speed of the blower motor. For example, consider the calculated PWM signal may be 80% duty cycle. The blower control unit 101, receives the present blower motor speed and/or the present blower motor voltage according to which speed of the blower motor 102 may be 2500 RPM. In an embodiment, the PWM signal is corrected in case of the closed control loop. The closed control loop is when the blower control unit 101 receives feedback from the blower motor 102. In an embodiment, the calculated PWM signal may be referred as the PWM data 210 and is stored in the memory 110. In an embodiment, the PWM signal may be calculated using one or more techniques, known to a person skilled in the art. The PWM techniques distribute energy through a series of pulses rather than a continuous varying analog signal. In an embodiment, by increasing or decreasing pulse width, energy flow to the blower motor 102 may be controlled. The one or more techniques for calculating the PWM signals may include, but is not limited to, comparator circuit, 555 timer Integrated Circuit (IC), microcontroller and so on. In the comparator circuit technique, triangular wave and control voltage is used to obtain the PWM signal. Depending on value of the control voltage, width of the PWM signal may be changed. In the 555 timer IC technique, value of resistance is changed to change the duty cycle of waveform to generate the PWM signal. In the microcontroller technique, arduino board may be used as it has dedicated output pins for generating the PWM signal. One or more other techniques, known to a person skilled in the art, may be implemented for calculating the PWM signals. [0047] At block 307 of Figure 3b, the PWM calculation module 202 may be configured to calculate the desired speed of the blower motor 102. Consider, the desired speed of the blower motor 102 may be 3000 RPM, which is calculated based on the present position of the blower switch 103, the present voltage of the battery 105, the present operation mode data and the experimental co-relation map. For example, consider position of the blower switch 103 may be the second position, present voltage of the battery 105 may be 12 volts and the IAC 104 may be in the idle mode. In such cases, the experimental co-relation map indicates speed of the blower motor 102 may be 2500 RPM. Thus, the desired speed for the second position may be 2500 RPM for the blower motor 102. [0048] In an embodiment, steps of Figure 3e are performed for calculating the PWM signal when position of the blower switch 103 may be less than or equal to the third position. At block 313 of Figure 3e, the PWM calculation module 202 may be configured to detect position of the blower switch 103 of the blower unit in the vehicle. Upon detecting the position, the PWM calculation module 202 may be configured to check if the position of the blower switch 103 is one of less than and equal to third position as shown at block 314 of Figure 3e. Upon checking, if the position of the blower switch 103 is one of less than and equal to the third position, step at block 315 is performed as shown in Figure 3e. Upon checking, if the position of the blower switch 103 is not one of less than and equal to the third position, steps at block 316 is performed as shown in Figure 3e. At block 316, calculation of the PWM signal is performed considering the position of the blower switch 103 to be in the fourth position or above. [0049] At block 315 of Figure 3e, the PWM calculation module 202 may be configured to calculate the desired speed of the blower motor 102 by selecting a minimum value for the RPM and value of achievable blower speed. The minimum value of the RPM is the predefined speed data 211 for the present blower switch position data 207. For example, for the third position of the blower switch 103, the minimum value of the RPM may be 3000 RPM. In an embodiment, such RPM is predefined for the third position of the blower switch 103. In an embodiment, the value of achievable blower speed may be based on the present battery voltage data 208. Consider the present battery voltage of the battery 105 may be 13 volts. For 13 volts, the blower motor 102 may run at 3500 RPM. Hence, when the present battery voltage is identified as 13 volts, the value achievable by the blower motor 102 in terms of the RPM may be 3500 RPM. In an embodiment, the present battery voltage of the battery 105 may vary due to the operation mode of the IAC 104. For example, consider for the third position, the voltage of the battery may be 13 volts. However, due to the operation mode of the IAC 104, the voltage of the battery 105 fluctuates from 13 volts to 13.5 volts. Thus, for the present battery voltage of 13.5 volts, the value achievable by the blower motor 102 for the third position may be 3500 RPM which may be achieved by controlling the voltage at the blower motor 102 to be 13 volts. [0050] At block 317 of the Figure 3e, the PWM calculation module 202 may be configured to calculate the PWM signal. The PWM signal is calculated based on the calculated desired blower speed of the blower motor 102 and the present voltage of the battery 105. In an embodiment, the PWM calculation module 202 may be configured to use a predefined blower duty map. In an embodiment, the blower duty map may include desired RPM for the blower motor 102 based on actual voltage of the battery 105. For example, the blower duty map may indicate that RPM of the blower motor 102 may be 3000 RPM for 13 volts of the battery 105. In an embodiment, the predefined blower duty map may be predefined by a user. The predefined blower duty map may alternatively be referred to as the predefined blower duty map data 212 and is stored in the memory 110. [0051] In an embodiment, steps of Figure 3f may be performed when the position of the blower switch 103 may be equal to the fourth position or above. In an embodiment, the PWM signal may be calculated based on position of the blower switch 103 and the operation mode of the IAC 104. [0052] At block 313 of Figure 3f, the PWM calculation module 202 may be configured to detect position of the blower switch 103 of the blower unit in the vehicle. Upon detecting, the PWM calculation module 202 may be configured to check the position of the blower switch 103 to be equal to the fourth position or above as shown at block 318 of Figure 3f. Upon checking, the position of the blower switch 103 to be equal to the fourth position or above, steps at block 319 is performed as shown in Figure 3f. Upon checking, the position of the blower switch 103 to be not equal to the fourth position and above, steps at block 320 is performed as shown in Figure 3f. At block 320, calculation of the PWM signal is performed considering the position of the blower switch 103 to be one of less than and equal to the third position of the blower switch 103. [0053] At block 319 of Figure 3d, the PWM calculation module 202 may be configured to detect present operation mode of the IAC 104 in the vehicle. Upon detecting, the PWM calculation module 202 may be configured to check the operation mode to be one of the idle mode and the regeneration mode or the charging mode of the IAC 104 as shown at block 321 of Figure 3f. Upon checking the operation mode to be the idle mode, step at block 323 is performed as shown in Figure 3f. Upon checking the operation mode to be the regeneration mode or the charging mode, step at block 322 is performed as shown in Figure 3f. [0054] At block 322 of Figure 3f, the PWM calculation module 202 may be configured to calculate the desired speed of the blower motor 102 by selecting a minimum value for the RPM and value of achievable blower speed. In an embodiment, the calculation of the desired speed of the blower motor 102 may also depend on the present operation mode data of the IAC 104. In an embodiment, the operation mode of the IAC 104 may be the regeneration mode or the charging mode. The minimum value of the RPM is the predefined speed data 211 for the present blower switch position data 207. For example, for the fourth position of the blower switch 103, the minimum value of the RPM may be 4000 RPM. In an embodiment, such RPM is predefined for the fourth position of the blower switch 103. In an embodiment, the value of achievable blower speed may be based on the present battery voltage data 208. Consider the present battery voltage of the battery 105 may be 14 volts. For 14 volts, the blower motor 102 may run at 4500 RPM. Hence, when the present battery voltage is identified as 14 volts, the value achievable by the blower motor 102 in terms of the RPM may be 4500 RPM. In an embodiment, the present battery voltage of the battery 105 may vary due to the operation mode of the IAC 104. For example, consider for the fourth position, the voltage of the battery 105 may be 14 volts. However, due to the regeneration mode or the charging mode of the IAC 104, the voltage of the battery 105 fluctuates from 14 volts to 14.5 volts. Thus, for the present battery voltage of 14.5 volts, the value achievable by the blower motor 102 for the fourth position may be 4500 RPM which may be achieved by controlling the voltage at the blower motor 102 to be 14 volts. [0055] At block 323 of Figure 3f, the PWM calculation module 202 may be configured to calculate the desired speed of the blower motor 102 by selecting a value for the RPM. In an embodiment, calculation of the desired speed of the blower motor 102 may also depend on the present operation mode data of the IAC 104. In an embodiment, the operation mode of the IAC 104 may be the idle mode. In the idle mode the predefined speed of the blower motor 102 for the present position of the blower switch 103 may not be achieved. For example, in the idle mode i.e., when the vehicle stops, voltage of the battery 105 may be low. Since, the voltage of the battery 105 is low the blower motor 102 may not be able to achieve the predefined speed for the fourth position or above. Consider for the fourth position speed of the blower motor 102 may be 4000 RPM. In the idle mode voltage of the battery 105 may be 11volts to 12 volts, while for the fourth position voltage at the blower motor 102 needs to be 14 volts. In an embodiment, the value of the RPM is the value of achievable blower speed based on the present battery voltage data 208. For example, when the present battery voltage is identified to be 11 volts to 12 volts due to the idle mode, the value achievable by the blower motor 102 for the fourth position may be 3500 RPM. However, the desired speed for the fourth position may be 4000 RPM. In an embodiment, the desired speed for the fourth position may not be achieved due to the idle mode of the IAC 104. Thus, the PWM calculation module 202 calculates the PWM signal to achieve the desired speed of the blower motor 102 by controlling the voltage at the blower motor 102 to be 14 volts. [0056] At block 324 of Figure 3f, the PWM calculation module 202 may be configured to calculate the PWM signal. The PWM signal is calculated based on the calculated desired blower speed of the blower motor 102 and the present voltage of the battery 105. In an embodiment, the PWM calculation module 202 may be configured to use a predefined blower duty map. In an embodiment, the blower duty map may include desired RPM for the blower motor 102 based on actual voltage of the battery 105. For example, the blower duty map may indicate that RPM of the blower motor 102 may be 4000 RPM for 14 volts of the battery 105. [0057] In an embodiment, steps of Figure 3g may be performed when the position of the blower switch 103 may be equal to the fourth position or above. In an embodiment, the PWM signal may be calculated based on position of the blower switch 103 and transition of the operation mode of the IAC 104. [0058] At block 313 of Figure 3g, the PWM calculation module 202 may be configured to detect position of the blower switch 103 of the blower unit in the vehicle. Upon detecting, the PWM calculation module 202 may be configured to check the position of the blower switch 103 to be equal to the fourth position or above as shown at block 318 of Figure 3g. Upon checking, the position of the blower switch 103 to be equal to the fourth position or above, steps at block 325 is performed as shown in Figure 3g. Upon checking, the position of the blower switch 103 to be not equal to the fourth position or above, steps at block 320 is performed as shown in Figure 3g. At block 320, calculation of the PWM signal is performed considering the position of the blower switch 103 to be one of less than and equal to the third position of the blower switch 103. [0059] At block 325 of Figure 3g, the PWM calculation module 202 may be configured to detect transition of the operation mode of the IAC 104 in the vehicle. In an embodiment, the transition may be from the idle mode to the regeneration mode or the charging mode. In an embodiment, the transition may be from the regeneration mode or the charging mode to the idle mode. Upon detecting, the PWM calculation module 202 may be configured to check the transition of the operation mode from the idle mode to the regeneration mode or the charging mode of the IAC 104 as shown at block 326 of Figure 3g. Upon checking if the transition of the operation mode is from the idle mode to the regeneration mode or the charging mode, step at block 327 is performed as shown in Figure 3g. Upon checking if the transition of the operation mode is not from the idle mode to the regeneration mode or the charging mode, step at block 329 is performed as shown in Figure 3g. [0060] At block 325 of Figure 3g, the PWM calculation module 202 may be configured to calculate the desired speed of the blower motor 102 by ramping up or increasing the RPM of the blower motor 102. In an embodiment, the RPM of the blower motor 102 may be ramped up or increased to predefined RPM for the fourth position of the blower switch 103 or above. For example, consider the vehicle may be in the idle mode and the driver of the vehicle accelerates, in such cases, engine of the vehicle runs even without supply of fuel. The IAC 104 uses unused kinetic energy during acceleration to generate power and charge batteries. Thus, process of using the unused kinetic energy by the IAC 104 is referred as energy regeneration. In an embodiment, the IAC 104 may charge the battery 105 using the unused kinetic energy which may cause fluctuation in the battery voltage. The fluctuation in the battery voltage may cause fluctuation in the speed of the blower motor 102. For example, the RPM of the blower motor 102 may be 4000 RPM. However, due to fluctuation in the battery voltage the RPM may have decreased to 3500 RPM. Therefore, in an embodiment, the RPM of the blower motor 102 may be increased or ramped up to the predefined speed of the blower motor 102 for the fourth position. Upon increasing or ramping up the RPM of the blower motor 102 steps at block 328 is performed as shown in Figure 3g. [0061] At block 329 of Figure 3g, the PWM calculation module 202 may be configured to calculate the desired speed of the blower motor 102 by ramping down or decreasing the RPM of the blower motor 102. In an embodiment, the RPM of the blower motor 102 may be decreased to a predefined voltage value of the battery 105. For example, consider the vehicle may be in the regeneration mode or the charging mode and the driver of the vehicle stops the vehicle by applying brakes. In such cases, the IAC 104 assists engine of the vehicle by running in the idle mode. During the transition from the regeneration mode to the idle mode, the voltage of the battery 105 may reach around 11 volts to 12 volts. In an embodiment, the RPM of the blower motor 102 may be decreased or ramped down to the predefined speed of the blower motor 102 for the fourth position or above. Upon decreasing or ramping down the RPM of the blower motor 102, steps at block 330 is performed as shown in Figure 3g. [0062] At block 328 of Figure 3g, the PWM calculation module 202 may be configured to decide ramp-up rate of speed of the blower motor 102. In an embodiment, the ramp-up rate of speed may be in milliseconds. In an embodiment, when the IAC 104 may be transitioned from the idle mode to the regeneration mode or the charging mode, speed of the blower motor 102 may be ramped up in milliseconds to avoid any noticeable blower noise. Upon deciding the ramp-up rate, steps at block 331 is performed as shown in Figure 3g. [0063] At block 330 of Figure 3g, the PWM calculation module 202 may be configured to decide ramp-down rate of speed of the blower motor 102. In an embodiment, the ramp-down rate of speed may be in milliseconds. In an embodiment, when the IAC 104 may be transitioned from the regeneration mode or the charging mode to the idle mode, speed of the blower motor 102 may be ramped down in milliseconds to avoid any noticeable blower noise. Upon deciding the ramp-down rate, steps at block 331 is performed as shown in Figure 3g. [0064] At block 331 of Figure 3g, the PWM calculation module 202 may be configured to calculate the PWM signal. The PWM signal may be calculated based on the calculated desired speed of the blower motor 102 and the present voltage of the battery 105. The PWM signal is calculated based on the calculated desired blower speed of the blower motor 102 and the present voltage of the battery 105. In an embodiment, the PWM calculation module 202 may be configured to use a predefined blower duty map. In an embodiment, the predefined blower duty map may include desired RPM for the blower motor 102 based on actual voltage of the battery 105. For example, the predefined blower duty map may indicate that RPM of the blower motor 102 may be 4000 RPM for 14 volts of the battery 105. In an embodiment, the blower duty map may also include desired speed of the blower motor 102 which is calculated in steps 327 and 329. In an embodiment, to obtain the PWM signal the desired speed of the blower motor 102 and the present voltage of the battery 105 may be compared with the predefined blower duty map. For example, consider that the corresponding voltage value for the RPM value 4000 RPM may be 14 volts. While the corresponding voltage value for the desired RPM value 4500 RPM may be 14.5 volts. In an embodiment, the PWM signal may be between 14 volts to 14.5 volts to control speed of the blower motor 102. [0065] Referring back to Figure 3b, at block 308, upon calculating the PWM signal, the speed control module 203 may be configured to control speed of the blower motor 102 of the vehicle. For example, consider that the speed of the blower motor 102 may be varying due to the change in the position of the blower switch 103 and the operation mode of the IAC 104. In an embodiment, the calculated PWM signal may be 12.5 volts based on the present position of the blower switch 103 and the present operation mode of the IAC 104. The PWM signal controls the speed of the blower motor 102 to obtain a constant RPM and eliminates or reduces noise caused by the blower motor 102. [0066] In an embodiment, Figure 3c shows a block diagram depicting an open sloop control for controlling speed of the blower unit in the vehicle. The block diagram of Figure 3c includes the information reception module 301, the PWM calculation module 302, the speed control module 303 and the blower motor 304. In an embodiment, steps of Figure 3d may be performed to control the speed of the blower unit in the vehicle based on the open loop control. The information reception module 301 may be configured to receive the present blower switch position, the present battery voltage, and the present operation mode data of the IAC 104. In an embodiment, upon receiving information from the information reception module 301, the PWM calculation module 302 may be configured to calculate the PWM signal. The PWM calculation module 302 calculates the PWM signal to control the voltage at the blower motor 304. In an embodiment, the speed control module 303 may be configured to control the speed of the blower motor 304 in the vehicle. The PWM signal may be calculated based on the present blower switch position, the present battery voltage and the present operation mode data of the IAC 104. In an embodiment, the open loop control does not require the feedback from the blower motor 304. [0067] In an embodiment, steps of Figure 3d may be performed to control speed of the blower unit in the vehicle. In an embodiment, steps of Figure 3d may be performed in the open control loop. In the open control loop the information reception module 201 receives the present blower switch position from driver of the vehicle, present voltage of the battery 105 and present operation mode data of the IAC 104. Upon receiving, the PWM calculation module 202 may be configured to calculate the PWM signal to obtain the desired speed of the blower motor 102. In an embodiment, steps of Figure 3e may be performed when position of the blower switch 103 may be one of less than and equal to the third position. In an embodiment, steps of Figure 3g may be performed when position of the blower switch 103 may be one of the fourth position or above and the present operation mode data of the IAC 104 may be one of the regeneration mode or charging mode and the idle mode. In an embodiment, steps of Figure 3f may be performed when position of the blower switch 103 may be one of the fourth position or above and transition of the present operation mode data of the IAC 104 may be either of the transition. The transition may be from the regeneration mode or charging mode to the idle mode. The transition may be from the idle mode to the regeneration mode or the charging mode. In an embodiment, Figure 3a is performed to achieve close control loop for controlling speed of the blower unit. While Figure 3c is performed to achieve open control loop for controlling speed of the blower unit. In an embodiment, in the close control loop, the blower control unit 101 may be configured to receive feedback from the blower motor 102. In an embodiment, in the open control loop the blower control unit 101 does not receive feedback from the blower motor 102 to control speed of the blower motor 102. [0068] The other data 213 may store data, including temporary data and temporary files, generated by modules for performing the various functions of the blower control unit 101. The one or more modules 111 may also include other modules 204 to perform various miscellaneous functionalities of the blower control unit 101. It will be appreciated that such modules may be represented as a single module or a combination of different modules. [0069] As illustrated in Figures 3b, 3d, 3e, 3f and 3g, the methods 300, 309 and 306 may include one or more blocks for executing processes in the blower control unit 101. The methods 300, 309 and 306 may be described in the general context of computer executable instructions. Generally, computer executable instructions can include routines, programs, objects, components, data structures, procedures, modules, and functions, which perform particular functions or implement particular abstract data types. [0070] The order in which the methods 300, 309 and 306 are described may not intended to be construed as a limitation, and any number of the described method blocks can be combined in any order to implement the method. Additionally, individual blocks may be deleted from the methods without departing from the scope of the subject matter described herein. Furthermore, the method can be implemented in any suitable hardware, software, firmware, or combination thereof. Computing System [0071] Figure 4 illustrates a block diagram of an exemplary computer system 400 for implementing embodiments consistent with the present disclosure. In an embodiment, the computer system 400 is used to implement the blower control unit 101. The computer system 400 may include a central processing unit (“CPU” or “processor”) 402. The processor 402 may include at least one data processor for executing processes in Virtual Storage Area Network. The processor 402 may include specialized processing units such as, integrated system (bus) controllers, memory management control units, floating point units, graphics processing units, digital signal processing units, etc. [0072] The processor 402 may be disposed in communication with one or more input/output (I/O) devices 409 and 410 via I/O interface 401. The I/O interface 401 may employ communication protocols/methods such as, without limitation, audio, analog, digital, monaural, RCA, stereo, IEEE-1394, serial bus, universal serial bus (USB), infrared, PS/2, BNC, coaxial, component, composite, digital visual interface (DVI), high-definition multimedia interface (HDMI), RF antennas, S-Video, VGA, IEEE 802.n /b/g/n/x, Bluetooth, cellular (e.g., code-division multiple access (CDMA), high-speed packet access (HSPA+), global system for mobile communications (GSM), long-term evolution (LTE), WiMax, or the like), etc. [0073] Using the I/O interface 401, the computer system 400 may communicate with one or more I/O devices 409 and 410. For example, the input devices 409 may be an antenna, keyboard, mouse, joystick, (infrared) remote control, camera, card reader, fax machine, dongle, biometric reader, microphone, touch screen, touchpad, trackball, stylus, scanner, storage device, transceiver, video device/source, etc. The output devices 410 may be a printer, fax machine, video display (e.g., cathode ray tube (CRT), liquid crystal display (LCD), light-emitting diode (LED), plasma, Plasma display panel (PDP), Organic light-emitting diode display (OLED) or the like), audio speaker, etc. [0074] In some embodiments, the computer system 400 may consist of the blower control unit 101. The processor 402 may be disposed in communication with the communication network (not shown in the Figure 4) via a network interface 403. The network interface 403 may communicate with the communication network (not shown in the Figure 4). The network interface 403 may employ connection protocols including, without limitation, direct connect, Ethernet (e.g., twisted pair 10/100/1000 Base T), transmission control protocol/internet protocol (TCP/IP), token ring, IEEE 802.11a/b/g/n/x, etc. The communication network may include, without limitation, a direct interconnection, Local Area Network (LAN), Wide Area Network (WAN), Control Area Network (CAN), Local Interconnect Network (LIN), wireless network (e.g., using Wireless Application Protocol), the Internet, etc. Using the network interface 403 and the communication network (not shown in the Figure 4), the computer system 400 may communicate with a blower motor 411, a blower switch 412, an IAC 413, a battery 414, a battery sensor 415 and a PWM unit 416 for controlling speed of a blower unit in a vehicle. The network interface 403 may employ connection protocols include, but not limited to, direct connect, Ethernet (e.g., twisted pair 10/100/1000 Base T), transmission control protocol/internet protocol (TCP/IP), token ring, IEEE 802.11a/b/g/n/x, etc. [0075] The communication network (not shown in the Figure 4) includes, but is not limited to, a direct interconnection, an e-commerce network, a peer to peer (P2P) network, Local Area Network (LAN), Wide Area Network (WAN), Control Area Network (CAN), Local Interconnect Network (LIN), wireless network (e.g., using Wireless Application Protocol), the Internet, Wi-Fi, and such. The communication network may either be a dedicated network or a shared network, which represents an association of the different types of networks that use a variety of protocols, for example, Hypertext Transfer Protocol (HTTP), Transmission Control Protocol/Internet Protocol (TCP/IP), Wireless Application Protocol (WAP), etc., to communicate with each other. Further, the communication network may include a variety of network devices, including routers, bridges, servers, computing devices, storage devices, etc. [0076] In some embodiments, the processor 402 may be disposed in communication with a memory 405 (e.g., RAM, ROM, etc. not shown in Figure 4) via a storage interface 404. The storage interface 404 may connect to memory 405 including, without limitation, memory drives, removable disc drives, etc., employing connection protocols such as, serial advanced technology attachment (SATA), Integrated Drive Electronics (IDE), IEEE-1394, Universal Serial Bus (USB), fibre channel, Small Computer Systems Interface (SCSI), etc. The memory drives may further include a drum, magnetic disc drive, magneto-optical drive, optical drive, Redundant Array of Independent Discs (RAID), solid-state memory devices, solid-state drives, etc. [0077] The memory 405 may store a collection of program or database components, including, without limitation, user interface 406, an operating system 407 etc. In some embodiments, computer system 400 may store user/application data 406, such as, the data, variables, records, etc., as described in this disclosure. Such databases may be implemented as fault-tolerant, relational, scalable, secure databases such as Oracle ® or Sybase®. [0078] The operating system 407 may facilitate resource management and operation of the computer system 400. Examples of operating systems include, without limitation, APPLE MACINTOSH® OS X, UNIX®, UNIX-like system distributions (E.G., BERKELEY SOFTWARE DISTRIBUTION ^TM (BSD), FREEBSD ^TM , NETBSD ^TM , OPENBSD ^TM , etc.), LINUX DISTRIBUTIONS ^TM (E.G., RED HAT ^TM , UBUNTU ^TM , KUBUNTU ^TM , etc.), IBM ^TM OS/2, MICROSOFT ^TM WINDOWS ^TM (XP ^TM , VISTA ^TM /7/8, 10 etc.), APPLE® IOS ^TM , GOOGLE® ANDROID ^TM , BLACKBERRY® OS, or the like. [0079] In some embodiments, the computer system 400 may implement a web browser 408 stored program component. The web browser 408 may be a hypertext viewing application, such as Microsoft Internet Explorer, Google Chrome, Mozilla Firefox, Apple Safari, etc. Secure web browsing may be provided using Hypertext Transport Protocol Secure (HTTPS), Secure Sockets Layer (SSL), Transport Layer Security (TLS), etc. Web browsers 408 may utilize facilities such as AJAX, DHTML, Adobe Flash, JavaScript, Java, Application Programming Interfaces (APIs), etc. In some embodiments, the computer system 400 may implement a mail server stored program component. The mail server may be an Internet mail server such as Microsoft Exchange, or the like. The mail server may utilize facilities such as ASP, ActiveX, ANSI C++/C#, Microsoft .NET, Common Gateway Interface (CGI) scripts, Java, JavaScript, PERL, PHP, Python, WebObjects, etc. The mail server may utilize communication protocols such as Internet Message Access Protocol (IMAP), Messaging Application Programming Interface (MAPI), Microsoft Exchange, Post Office Protocol (POP), Simple Mail Transfer Protocol (SMTP), or the like. In some embodiments, the computer system 400 may implement a mail client stored program component. The mail client may be a mail viewing application, such as Apple Mail, Microsoft Entourage, Microsoft Outlook, Mozilla Thunderbird, etc. [0080] Furthermore, one or more computer-readable storage media may be utilized in implementing embodiments consistent with the present disclosure. A computer-readable storage medium refers to any type of physical memory on which information or data readable by a processor may be stored. Thus, a computer-readable storage medium may store instructions for execution by one or more processors, including instructions for causing the processor(s) to perform steps or stages consistent with the embodiments described herein. The term “computer-readable medium” should be understood to include tangible items and exclude carrier waves and transient signals, i.e., be non-transitory. Examples include Random Access Memory (RAM), Read-Only Memory (ROM), volatile memory, non-volatile memory, hard drives, CD ROMs, DVDs, flash drives, disks, and any other known physical storage media. Advantages [0081] An embodiment of the present disclosure provisions to eliminate motor noise and avoid discomfort to passenger by controlling speed of the blower unit in the vehicle using the calculated PWM signals. [0082] An embodiment of the present disclosure provisions to reduce cost of manufacturing of the vehicle by eliminating use of the voltage stabilizer for controlling desired voltage of the blower motor. Instead, PWM signal is calculated and provided to the blower motor to control speed of the blower unit. [0083] An embodiment of the present disclosure increases fuel economy by decreasing electrical consumption of the blower unit at higher voltages, by considering the IAC fluctuations to control voltage supply to the blower unit in the vehicle. [0084] An embodiment of the present disclosure eliminates probability of hardware failure associated with voltage stabilizer as the voltage stabilizer is eliminated to control speed of the blower unit. Instead, PWM signal is calculated and used to efficiently control the speed of the blower unit in the vehicle. [0085] The described operations may be implemented as a method, system or article of manufacture using standard programming and/or engineering techniques to produce software, firmware, hardware, or any combination thereof. The described operations may be implemented as code maintained in a “non-transitory computer readable medium”, where a processor may read and execute the code from the computer readable medium. The processor is at least one of a microprocessor and a processor capable of processing and executing the queries. A non-transitory computer readable medium may include media such as magnetic storage medium (e.g., hard disk drives, floppy disks, tape, etc.), optical storage (CD-ROMs, DVDs, optical disks, etc.), volatile and non-volatile memory devices (e.g., EEPROMs, ROMs, PROMs, RAMs, DRAMs, SRAMs, Flash Memory, firmware, programmable logic, etc.), etc. Further, non-transitory computer- readable media may include all computer-readable media except for a transitory. The code implementing the described operations may further be implemented in hardware logic (e.g., an integrated circuit chip, Programmable Gate Array (PGA), Application Specific Integrated Circuit (ASIC), etc.). [0086] An “article of manufacture” includes non-transitory computer readable medium, and /or hardware logic, in which code may be implemented. A device in which the code implementing the described embodiments of operations is encoded may include a computer readable medium or hardware logic. Of course, those skilled in the art will recognize that many modifications may be made to this configuration without departing from the scope of the invention, and that the article of manufacture may include suitable information bearing medium known in the art. [0087] The terms “an embodiment”, “embodiment”, “embodiments”, “the embodiment”, “the embodiments”, “one or more embodiments”, “some embodiments”, and “one embodiment” mean “one or more (but not all) embodiments of the invention(s)” unless expressly specified otherwise. [0088] The terms “including”, “comprising”, “having” and variations thereof mean “including but not limited to”, unless expressly specified otherwise. [0089] The enumerated listing of items does not imply that any or all of the items are mutually exclusive, unless expressly specified otherwise. [0090] The terms “a”, “an” and “the” mean “one or more”, unless expressly specified otherwise. [0091] A description of an embodiment with several components in communication with each other does not imply that all such components are required. On the contrary a variety of optional components are described to illustrate the wide variety of possible embodiments of the invention. [0092] When a single device or article is described herein, it will be readily apparent that more than one device/article (whether or not they cooperate) may be used in place of a single device/article. Similarly, where more than one device or article is described herein (whether or not they cooperate), it will be readily apparent that a single device/article may be used in place of the more than one device or article, or a different number of devices/articles may be used instead of the shown number of devices or programs. The functionality and/or the features of a device may be alternatively embodied by one or more other devices which are not explicitly described as having such functionality/features. Thus, other embodiments of the invention need not include the device itself. [0093] The illustrated operations of Figures 3b, 3d, 3e, 3f and 3g shows certain events occurring in a certain order. In alternative embodiments, certain operations may be performed in a different order, modified, or removed. Moreover, steps may be added to the above-described logic and still conform to the described embodiments. Further, operations described herein may occur sequentially or certain operations may be processed in parallel. Yet further, operations may be performed by a single processing unit or by distributed processing units. [0094] Finally, the language used in the specification has been principally selected for readability and instructional purposes, and it may not have been selected to delineate or circumscribe the inventive subject matter. It is therefore intended that the scope of the invention be limited not by this detailed description, but rather by any claims that issue on an application based here on. Accordingly, the disclosure of the embodiments of the invention is intended to be illustrative, but not limiting, of the scope of the invention, which is set forth in the following claims. [0095] While various aspects and embodiments have been disclosed herein, other aspects and embodiments will be apparent to those skilled in the art. The various aspects and embodiments disclosed herein are for purposes of illustration and are not intended to be limiting, with the true scope and spirit being indicated by the following claims.

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