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Patent Searching and Data


Matches 551 - 600 out of 23,247

Document Document Title
WO/2005/086341A1
The present invention provides a method for controlling the output power of a permanent magnet electric motor (102) using a control means (106). The control means (106) includes a means (134) for measuring motor speed (134) and motor pha...  
WO2005050332A3
An improved regulator system (10) is disclosed for controlling a field winding (23) of an alternator (20) to regulate the charging of a battery (30). The improved regulator system (10) has an internal regulator (50A) mounted onto the alt...  
WO2005011100A3
The invention relates to a speed control system for the motor of a fan and motor unit comprising a first and second transistors (3, 5) which are in parallel connected to each other and to a motor (1) through a continuous voltage source (...  
WO/2005/083878A1
The invention relates to a device for controlling an electric motor, especially in motor vehicles, said electric motor being used for the setting of a setting element actuated by one such electric motor, according to the deviation of an ...  
WO/2005/081391A1
An existing control unit is switched to a current control unit in a short preparation time and working hours, and a time and a cost required and a quantity of industrial waste generated by the switching are reduced. The control unit is p...  
WO2005011099A3
A generator-motor apparatus (100) includes a control circuit (20), an alternator (50), electrode plates (83, 84), and switching devices (SW1 to SW6). The electrodes plates (83, 5 84) have a' substantial horseshoe shape, and are provided ...  
WO/2005/078538A1
A barrier movement operator (10) including a sensing device (110) for generating motor signals representing an operational variable of the motor (106), a position sensor (128, 127) for detecting the rotation of motor (106), a controller ...  
WO/2005/078223A1
Disclosed is an electric circuit arrangement for influencing a power switching element on the output side associated with an electric motor which is used to adjust a unit provided in a motor vehicle. The aim of the invention is to ensure...  
WO/2005/070746A1
The invention relates to a method for determining a time mean of a pulse width-modulated current of an electric motor of a motor vehicle. According to said method, a plurality of measuring values of a measuring variable that has a known ...  
WO/2005/071423A1
It is possible to reduce torque ripple of a motor attributed to a rotation detection device. A frequency multiplier (51) multiplies a rotation angle Ѳ of a detection object by the ripple frequency m per one rotation of the detection obj...  
WO/2005/071823A1
The invention relates to a module for varying the speed of a motor (GM), comprising a reverse battery protection (T1) that is electrically connected to a distribution voltage source (UB). If the voltage source (UB) cannot supply the requ...  
WO/2005/069476A1
A three-phase electric power converting apparatus for driving a DC electric motor (3) having a field coil (4), wherein a plurality of semiconductor switching elements having a three-phase electric power conversion function as well as a p...  
WO/2005/067133A1
A motor drive inverter control apparatus comprises a rectifier circuit for rectifying an AC power supply; an inverter circuit driven by an output of the rectifier circuit; a motor driven by an output of the inverter circuit; a first capa...  
WO/2005/067134A1
A power transistor protecting circuit of a motor drive circuit, a motor drive circuit, or a semiconductor device, wherein when a breaking of wire exists between the output terminal of a power transistor and another end of an exciting coi...  
WO/2005/062455A1
The invention relates to a device for power adjustment, by phase control of an alternating current, supplying an electrical user (14) and for reduction of the harmonic waves arising from the phase control, in particular, up to the region...  
WO/2005/062457A1
A three-wire reversing system for a permanent magnet, reversible, brush-type, direct current (DC) motor has a three-wire alternating current (AC) input voltage source which supplies electrical current to at least one capacitive element. ...  
WO/2005/058672A1
There is provided an electric power steering device for linearizing discontinuous non-linear characteristic generated in the relationship of the duty ratio between the motor current generated in the vehicle steering wheel return state an...  
WO/2005/057225A1
The invention relates to a method and an array for determining the rotational speed of a direct current motor, wherein an analogue/digital converter (5) is coupled to the supply terminal of a motor (1). Two man value generators (61, 62),...  
WO2005025024A3
The invention relates to an arrangement for isolating supply current from control devices, which satisfies higher safety standards while, however, being easy to operate. To this end, the inventive arrangement comprises a device for isola...  
WO/2005/057776A1
This invention relates to a low cost rotation motor rotation speed control circuit (1), that is utilized for DC electrical motors (2) of which their rotation speed is increased by applying Voltage Doubler (VD) method hence generating a h...  
WO/2005/055410A1
There is provided a DC motor drive device of the open loop control method. It is judged whether speed instruction data supplied corresponds to the DC motor drive instruction according to the speed instruction data. When it is decided tha...  
WO/2005/055400A1
A switched DC rotating electrical machine (100) comprising a stator (3), a rotor (2) and switching means (11a, 11b, 18a, 18b), an excitation winding (5) associated with one of the stator (3) or the rotor (2) having a pair of inputs, the ...  
WO/2005/050332A2
An improved regulator system (10) is disclosed for controlling a field winding (23) of an alternator (20) to regulate the charging of a battery (30). The improved regulator system (10) has an internal regulator (50A) mounted onto the alt...  
WO/2005/046916A1
The invention relates to a power tool comprising a control device (48) for controlling at least one operating parameter, and a corresponding method. Said power tool comprises a motor (42) for driving a tool, at least three switching elem...  
WO/2005/041394A1
The invention relates to a circuit arrangement and a method for operating a pulse width modulation-controlled electric motor (10) in a direct current source (14,16), more particularly for operating a blower motor in the electric system o...  
WO/2005/041400A1
A device (1) including a DC actuator (3), a rectifier element (D1, D2) and a switch (K) controlling the actuator power supply by connecting the actuator to the power grid via the rectifier element. The device is characterised in that the...  
WO2004045059A8
A permanent magnet motor includes salient pole stator cores. The poles and/or linking portions therebetween are wound with a plurality of winding coil sets. Mutually exclusive speed ranges are established between startup and a maximum sp...  
WO/2005/031962A1
The invention relates to a control circuit for an inductive, electric consumer (20), particularly a direct current motor (30) of a ventilating device in an internal combustion engine, comprising a first circuit element (14) which is seri...  
WO/2005/025024A2
The invention relates to an arrangement for isolating supply current from control devices, which satisfies higher safety standards while, however, being easy to operate. To this end, the inventive arrangement comprises a device for isola...  
WO/2005/020424A1
A spike detection circuit (12) includes an A/D converter circuit (14) for converting an output from a differential amplifier circuit (A2) into a digital signal; and an offset calculation circuit (15) for setting, based on an output from ...  
WO/2005/015707A1
The invention relates to a control unit for an electric motor of an actuator. Said control unit is fitted with a control board and a capacitive energy store which can be charged by the supply network in order to supply power to the elect...  
WO/2005/011100A2
The invention relates to a speed control system for the motor of a fan and motor unit comprising a first and second transistors (3, 5) which are in parallel connected to each other and to a motor (1) through a continuous voltage source (...  
WO/2005/011099A2
A generator-motor apparatus (100) includes a control circuit (20), an alternator (50), electrode plates (83, 84), and switching devices (SW1 to SW6). The electrodes plates (83, 5 84) have a' substantial horseshoe shape, and are provided ...  
WO2004102783A3
A linear power controller and related circuitry may be implemented to provide linear control of a variable DC electric motor. The controller and motor are coupled to form a closed loop for controlling the speed of the motor and for adjus...  
WO/2005/008878A1
A system is disclosed for driving a DC motor (15) under conditions of a controlled average current. An inductive element may be arranged for connection in series with the DC motor. A switch (14) is preferably coupled to the inductive ele...  
WO/2004/114513A1
The present invention relates to a method for control of a direct current motor (30) in one or several fan units (43, 20, 21), each comprising a fan, which method comprises: generation of a control signal from a first control unit (22) w...  
WO/2004/109902A1
The invention relates to a series resistor assembly (1) for an electric motor (M), in particular for an electrically driven ventilating fan in a vehicle. Said assembly comprises a series resistor (2) for controlling the RPM of the electr...  
WO2004084397A3
Current through a motor (18) is sensed at (26) to create a voltage which is amplified at (30). The amplifier (30) is followed by a high pass filter (38) and a low pass filter (46). This recovers commutator pulses from the motor current, ...  
WO2004004109A3
A system for controlling an electric motor comprises, in one embodiment, an encoder; a central processor in communication with said encoder; a module processor in communication with said central processor; feedback circuitry in communica...  
WO/2004/107551A1
Even when an inverter device cannot be connected to a commercial power source or a control power source is cut off, it is possible to check and modify the setting state of a microcomputer and a peripheral circuit of the inverter device. ...  
WO/2004/102783A2
A linear power controller and related circuitry may be implemented to provide linear control of a variable DC electric motor. The controller and motor are coupled to form a closed loop for controlling the speed of the motor and for adjus...  
WO/2004/098261A2
A controller (28) for a doubly fed induction generator (12, 20) adjusts control signals to a rotor side converter (24) and line side converter (22) to adjust rotor current when a voltage transient on a utility grid (10) occurs, so that t...  
WO/2004/093287A1
A variable speed drive control system operates a variable speed drive to power a first load from a power source simultaneously powering a second load. An AC reactive power is monitored which may comprise or consist of an AC reactive powe...  
WO/2004/084397A2
Current through a motor (18) is sensed at (26) to create a voltage which is amplified at (30). The amplifier (30) is followed by a high pass filter (38) and a low pass filter (46). This recovers commutator pulses from the motor current, ...  
WO2004070882A3
A multiphase motor has a plurality of ferromagnetically isolated stator electromagnets distributed about an axis of rotation. Successive ranges of speed during which the motor can be expected to operate are defined. A specific subset of ...  
WO2004072130A3
According to the invention, for a simple actuator, the cumulative rotational angle of the rotor is calculated from the current operating values of the direct current motor, from a starting point at which a supply voltage is applied to th...  
WO2004068691A3
Disclosed is a method for triggering an electric motor by means of a pulse width modulation signal that has a specific triggering frequency and a specific pulse duty factor. The electric motor is triggered via a supply voltage line accor...  
WO/2004/078508A1
The invention relates to a driving assembly comprising a wheel comprising a wheel shaft and driving means which when operative exert a driving moment on the wheel shaft, wherein a drive ratio, being the arm of the driving moment divided ...  
WO/2004/072130A2
According to the invention, for a simple actuator, the cumulative rotational angle of the rotor is calculated from the current operating values of the direct current motor, from a starting point at which a supply voltage is applied to th...  
WO/2004/070932A1
The invention relates to a method for reducing line-bound disturbances in pulse-width modulated control of an electric motor. A controlled pulse-width modulation signal in a clock cycle comprises one or several signal edges between a fir...  

Matches 551 - 600 out of 23,247