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Patent Searching and Data


Matches 401 - 450 out of 9,110

Document Document Title
WO/2010/130160A1
A control circuit of a single-phase AC motor for a dryer includes a start control unit, a first drive circuit, a first triac (BCR1), a second drive circuit, and a second triac (BCR2). The first triac (BCR1) is connected to an AC input of...  
WO/2010/124582A1
A pumping unit system and electricity-saving control method thereof are disclosed. The system includes a control module (1), a driving motor (2), a transmission part (3), a counterweight (4) and a sucker rod (5). The driving motor drives...  
WO/2010/112153A2
The invention relates to a method for operating an electrical machine, especially a separately excited synchronous machine having an additional squirrel cage. The electrical machine comprises a rotor which is mobile relative to a stator ...  
WO/2010/102364A1
The present invention relates to a control system for a single-phase induction motor comprising at least one electronic control circuit (6), at least one main switch (3), at least one auxiliary switch (4), at least one voltage conditione...  
WO/2010/083579A2
The present invention refers to a control and protection system for a single-phase induction motor capable of detecting a start-up condition of the motor based on the observation of the phase difference between the currents of the main a...  
WO/2010/079308A2
The invention relates to an electrical system for starting up an engine (18, 20, 22), including: an AC/DC rectifier (12), supplied with power by an AC power network (14) in order to generate a first DC voltage Vdc; a DC/AC conversion mod...  
WO/2010/064318A1
In a synchronous machine startup device, an AC voltage detector (8) detects an AC voltage supplied from a power converter (71) through a power line (LN) to the armature of a synchronous machine (4). The AC voltage detector (8) has a firs...  
WO/2010/060361A1
A gear control system and gear control method thereof. The gear control system comprises a motor position detecting device (15) for detecting the position of the motor and sending the information of the motor position to a central proces...  
WO/2010/057863A2
The present invention relates to a compressor motor (M) electronic control circuit (1) used in cooling devices, and the control circuit (1) comprises a power line (2) providing the energy that is received from the AC power source to be t...  
WO/2010/058449A1
A synchronous machine starting device comprises an induction voltage operating section (61) for calculating an induction voltage induced in the armature of a synchronous machine based on an estimated phase indicating the rotor position, ...  
WO/2010/058885A2
The present invention relates to a single phase induction motor, and more particularly, to a single phase induction motor, wherein a variable resistance element which can change a winding number of a main winding or an auxiliary winding ...  
WO/2010/052699A2
An object of the present invention is providing permissible values of start currents with sufficiently high start torque ensuring the possibility of the start of a loaded motor, the smoothness of the motor's start, without spikes and flu...  
WO/2010/052048A1
The invention relates to a three-phase AC power controller, comprising three strands each having an input (U1, V1, W1) and an output (U2, V2, W2), having five pairs (1, 2, 3, 4, 5) of valves connected in antiparallel for rotating field r...  
WO/2010/047722A1
A power control system for an A. C. induction motor is disclosed, comprising a voltage/current phase difference generator for determining a difference m phase between a voltage applied to the motor and a current drawn by the motor, and f...  
WO/2010/042187A1
Embodiments of a switched reluctance (SR) motor for use in a integrated vacuum system for a vehicle are disclosed. The SR motor may receive input voltage directly from an electrical storage device used to start up an engine of the vehicl...  
WO/2010/038282A1
A synchronous machine starting device comprises a power converter for converting supplied power into alternating-current power and supplying the alternating current power to an armature of a synchronous machine (4), an alternating-curren...  
WO/2010/036350A2
A load control system provides for automatically controlling a position of a motorized window treatment to control the amount of sunlight entering a space of a building through a window located in a facade of the building in order to con...  
WO/2010/034568A1
The invention relates to a method for determining the angular position of a synchronous machine having a magnetically anisotropic rotor, having an (m) iteration step and an (n) iteration step. The (m) iteration step comprises: generating...  
WO/2010/027742A2
A voltage control circuit is disclosed. A power factor corrector may utilize the control circuit to provide power factor correction for an AC induction motor. An AC induction motor system may combine the power factor correct with an AC i...  
WO/2010/013226A2
The invention consists in a polyphase motor and operating system thereof that allows obtaining an arbitrary relation of the number of magnetic poles without mechanical commutations within the stator. The number of slots of the latter is ...  
WO/2010/014858A1
A fail-passive electro-mechanical actuator utilizing dual controllers and a two-phase brushless motor is provided The system includes the two phase brushless motor including a stator, a rotor, a first winding electromagnetically coupled ...  
WO/2010/000865A1
The motor (1) of the present invention is driven by a power source (6). The motor (1) comprises a main winding (MW), an auxiliary winding (AW), a common terminal (C) wherein one of the ends of these two windings (MW and AW) are connected...  
WO/2009/148197A1
The present invention relates to an electronic relay for a single-phase induction motor which can integrate and perform a start function and a protection function through program control. The relay according to the present invention incl...  
WO/2009/127270A1
The invention relates to a fixed rotation speed drive. According to the invention, this fixed rotation speed drive has a permanent-magnet synchronous motor (2) and a voltage intermediate-circuit converter (4) which has a diode rectifier ...  
WO/2009/126288A2
A system for transitioned field oriented motor control is described. The system may include a module using a current-based algorithm to estimate flux and a module using a voltage-based algorithm to estimate flux. A weighting module opera...  
WO/2009/121666A2
The invention relates to switchgear (10) comprising a power supply (16) built into a common housing, and at least two drives (30, 32). The power supply (16) can be fed by an external supply voltage and an external consumer can be connect...  
WO/2009/118135A1
The method is used to start up a multiphase electric motor operating in star-connected mode. The method provides for conductive bridging of at least one coil portion of one phase of the motor and electrical separation of the bridged coi...  
WO/2009/114198A1
A motor start circuit for an AC induction motor employs a DC relay (20k, 120k) whose NC contacts are placed in series with the start capacitor (18). A half full- wave rectifier arrangement (30) has an AC input connected to the junction (...  
WO/2009/061220A9
Provided is a method of operating a motor at a low speed. The method includes sensing an event corresponding to an angular position of the motor. If the event occurs between a first time threshold and a second time threshold, the method ...  
WO/2009/096649A1
When it is determined that a rotor is initially in a stationary state, a current vector is applied to a coil by a vector control method so as to rotate the rotor in a forward direction from a present position of the rotor regardless of a...  
WO/2009/077668A2
The invention relates to a system (100) for powering an electric machine (M). One particularly interesting application of the present invention is to the field of powering electric motors used in automobiles. The system (100) comprises a...  
WO/2009/070089A1
A method and system for controlling an electric AC motor having three stator windings, for example for an electric car drive system. The stator windings are connected in a star configuration during operation in a low speed region with hi...  
WO/2009/062058A1
A drive apparatus includes a movable member, at least one linear electrical actuator for generating a first force, and at least one linear hydraulic actuator for generating a second force. The at least one linear electrical actuator and ...  
WO/2009/056018A1
An apparatus (10, 110, 510, 610) for controlling the starting and stopping of an AC induction motor comprises: a first magnetic permeable portion (20, 40, 120, 140, 520, 540, 620, 640) having first, second and third legs (21, 22, 23, 41,...  
WO/2009/054740A2
By definition, 1 Oersted = 4π /10 x NI / cm. In 1930, this definition of Oersted was adopted by the I.E.C. Prior to that time the Oersted had been used in the United States as the unit of magnetic reluctance. In 1947, when I finished my...  
WO/2009/049052A1
A fan system comprises a hub, a plurality of fan blades, a drive system, and a stationary tube. The hub is configured to rotate. The fan blades are mounted to the hub. The drive system comprises a rolatable hollow output shaft. The hollo...  
WO/2009/026688A1
An optical controlling circuit and an electrical controlled circuit such as a motor control circuit are interconnected by an electro-optic interface. A passive optical switch located in the optical circuit at a position remote from the e...  
WO/2009/021303A2
The present invention relates to a method of actuating a single- phase motor, a system for actuating a single-phase motor and a single-phase motor, especially applied to a system that enables one to actuate single- phase induction motors...  
WO/2009/023206A1
A method for controlling a multi -phase motor includes withholding energization of a first phase of the motor for a non-zero period when the first phase's dwell time begins. Energization of the first phase is activated upon the expiratio...  
WO/2009/023205A1
A power factor correction system includes a rectifier that rectifies the voltage of an alternating current (ac) power source to produce a voltage waveform that transitions, in a half sinusoid, from a minimum amplitude to a maximum amplit...  
WO/2009/023106A1
An IGBT/FET-based energy savings device, system and method (1) wherein a predetermined amount of voltage below a nominal line voltage and/or below a nominal appliance voltage is saved, thereby conserving energy. Phase input connections (...  
WO/2009/021302A2
The present invention relates to a system and a method for energizing an auxiliary winding of a capacitor-start single-phase induction motor. Said system and method aim at reducing the voltage level in the bidirectional switches present ...  
WO/2009/017704A1
A gate driver for performing gate shaping on a first transistor of having gate, source, and drain terminals, the first transistor being selected from a switching stage of a power switching circuit having high- and low-side transistors se...  
WO/2009/007465A2
The invention relates to a starter device for cranking internal combustion machines, with a connection (K50) for starter control, with an electric starter motor (13), wherein an electric supply line (16) is disposed from a plus-terminal ...  
WO/2009/001291A2
The control system comprises: a switch (TR) in series with a winding (W) of the motor (M) between two terminals (A, B) which are connected to a supply of an alternating voltage (V), a first detector circuit (1) suitable for providing a s...  
WO/2009/000996A2
The invention relates to a rotary electric machine including a first member (10) capable of generating a rotating magnetic field relative to the first member and a second member (6) provided with a winding through which can flow a curren...  
WO/2008/155156A2
The effectiveness with which an electric tool (10) having a rechargeable battery (24) can be operated is dependant on the temperature prevailing in the electric tool (10). In order to increase the operation of the electric tool (10) at l...  
WO/2008/153576A1
A motor starter is disclosed. The motor starter includes control circuitry integrally arranged with at least one current path and a processor included in the control circuitry. The motor starter further includes at least one processor al...  
WO/2008/145647A1
The invention relates to a circuit arrangement for the selective operation of at least two electric machines (1, 2) that are each supplied via a plurality of phase lines, comprising: - one voltage protection module (5) for limiting an in...  
WO/2008/138454A2
The invention relates to an electric drive which comprises at least one motor (31) which is or can be supplied with an electric motor current (30) by means of a converter (26), a current regulator (22) by means of which the motor current...  

Matches 401 - 450 out of 9,110