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Patent Searching and Data


Matches 551 - 600 out of 9,117

Document Document Title
WO/2005/117247A1
The drive circuit (10) includes a processing and control circuit (14) comprising a protection circuit (16), designed to generate at its output a logical inhibiting signal (C) starting from every zero crossing of the motor supply voltage ...  
WO2005083879B1
A motor comprising a combination of a plurality of sets of coils and permanent magnets, wherein the sets of coils are supplied with exciting signals from a drive circuit so as to be excited to opposite poles alternately, the permanent ma...  
WO/2005/112522A2
Methods and apparatus are provided tor an amplifier for use with a nonlinear load In some embodiment, a method is provided for driving a flash lamp The method comprises providing an amplifier (40, 50, 60 70 in Fig. 2) having a resonant r...  
WO/2005/112248A1
A method and an apparatus for controlling ride through of an induction motor by detecting a power loss from a power supply connected to the induction motor, disconnecting the induction motor from the power supply, monitoring a line volta...  
WO/2005/112247A2
A mechanism for a vehicle seat is includes a seat bottom supported by the vehicle and a seatback coupled to the seat bottom. The mechanism includes a first adjustment mechanism connected to the vehicle seat and operable between a locked ...  
WO/2005/112229A1
A starting device of a single-phase induction motor, which can minimize a consumed power in a steady-state operation thereby to save the energy. When the start of the single-phase induction motor (100) is completed, a bimetal (94) is tur...  
WO/2005/101642A1
The invention relates to a motor control device, particularly a motor control device (1) comprising a plurality of power circuitry units (17) in a housing unit (2) of said motor control device (1), wherein at least one power circuitry un...  
WO/2005/099080A1
The aim of the invention is to provide an inexpensive electronic arc quenching system which reliably detects and processes a non-functional state of opening of the bypass contacts (1) of a circuit device for starting a motor for example ...  
WO/2005/099076A2
The present invention relates to a method of controlling a power converter (20) of a synchronous machine system (10), the method comprising sampling phase-current values between the power converter (20) and the synchronous machine (30); ...  
WO/2005/090216A1
An elevator controller having an ordinary structure where the generated power in regenerating operation is consumed by a resistor chopper (18) additionally comprises an electric double-layer capacitor (21) connected parallel to a DC capa...  
WO/2005/079446A2
A motor is disclosed that uses magnetic propulsion for generating movement along a travel path in which the motor controller is mounted onboard the thrust block, thereby reducing connections the need for a remote motor controller. The mo...  
WO2004025822A9
An electrical machine having stator (30) and rotor (31) is disclosed. The motor has field windings (F) and armature windings (A) energized by a suitable power electronic controller (401). A controller (400) sends signals to the power ele...  
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/2005/076453A1
In an electronic system, motor braking is accomplished by applying direct current (DC) voltage, developed across a capacitive element during a run mode operation, across terminals of an alternating current (AC) or an induction motor. Whi...  
WO/2005/073996A1
A bimetal protector (115; 125) for an electric motor comprising a pair of fixed contacts (112), which is normally closed by a bimetal element (108), such as a bimetal disc or a pair of bimetal strips, optionally comprises a first heating...  
WO/2005/073995A1
A system (120) for preheating a bimetal protector (126) of a single phase motor (122) equipped with a first run capacitor (CR) and optionally a second run capacitor (CR-H). A first and optionally a second pair of normally closed fixed co...  
WO/2005/069474A1
An error in measuring phase currents of the system is detected by evaluating absolute values for specific operation times. The absolute values depend on the length of a rotating pointer which rotates at a frequency that is equal to a fre...  
WO/2005/067129A1
A system and method for actuating a moveable barrier operating system. A wireless time signal at a receiver. A time-of-day signal is supplied at the output of the receiver. The receiver is automatically reset using the wireless time sign...  
WO/2005/067130A1
The present invention relates to a fan driving circuit having a positive output-to-load characteristic, and more particularly, to a driving circuit exhibiting a positive output characteristic with respect to load in a fan. The fan drivin...  
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/2005/062458A1
A variable frequency power system with a power source having a rotating output and a speed control to regulate rotational speed of the rotating output. A generator coupled to and driven by the rotating output of the power source, whereby...  
WO/2005/057773A1
A starting system for a single-phase induction motor, comprising: a stator having a running coil (11) and a starting coil (12); a power source (F) which supplies current to said running coil (11) and said starting coil (12); a running sw...  
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/2005/053148A1
The invention relates to the field of electrical engineering, and it may be used in household appliances as well as in other alternating-current drives for domestic and industrial purposes. It is the aim of the present invention to desig...  
WO/2005/053147A1
An induction motor (10) control-system (1) / induction motor (10) assembly, an induction motor control system (1), a method of controlling an induction motor (10), and a compressor controlled with an induction motor according to the teac...  
WO/2005/046042A1
A protecting device for an electric motor, comprising: a stator having a running coil (11) and a starting coil (12); a power source (F) which supplies current to said running coil (11) and said starting coil (12); power switches (60), ea...  
WO/2005/034330A1
A starting device and starting method for a single-phase induction motor, comprising: a stator (B) having a running coil (B1) and a starting coil (B2); a running switch (S1) and a starting switch (S2) which is conducted to an open condit...  
WO/2005/027334A1
Disclosed is a starting power improved apparatus of a single-phase induction motor for a lift system of a lighting in a high place, which has a main starting condenser for generating a starting power and is switched by control of a micro...  
WO/2005/024877A1
The invention relates to a rotating electric motor (5) for operating an electric component. The motor is arranged for an operating movement during a limited predetermined angular motion of the rotor of the motor. An electric drive circui...  
WO/2005/020423A2
A motor actuator (52) of a climate control system (37) includes an specialized electric motor (62) with a motor housing enclosing an encoder ring (104) on a motor shaft (77) having a plurality of opposite encoder-segment sets with encode...  
WO/2005/010630A1
The invention is related to a soft start device for an asynchronous motor by means of a current limiting element situated between the motor and a power line, a start line with at least one current limiting element, a bypass line with byp...  
WO/2005/006520A1
A synchronous induction motor has a stator having a main winding and an auxiliary winding; a rotor having a yoke, a permanent magnet embedded in the yoke and a secondary conductor provided in the vicinity of periphery of the yoke; and a ...  
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/2004/093287A1
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/2004/088833A1
A system for driving synchronous motors (10) with built-in permanent magnets connected in parallel and operated by one inverter (9), characterized in that each synchronous motor (10) comprises a winding changing device (14) composed of a...  
WO/2004/079890A1
A motor controller for controlling an electric motor including a soft starter and a human-machine interface for control and configuration of the soft starter, said soft starter comprising a visual display and selection means associated w...  
WO/2004/079891A1
An arrangement and a method for starting a slip-ring machine (21), the arrangement comprising a frequency converter (26) arranged to be connected between a supply network (27) and a rotor (34) of the slip-ring machine for controlling the...  
WO/2004/079889A1
An apparatus for monitoring and control of one or more electric motors, comprising a motor controller, equipped with a soft starter. The soft starter comprises a memory means (22) for storing operations and event data, as well as a human...  
WO/2004/075391A1
An improved energy controller that increases the electrical efficiency of AC induction motors and electrical lights (110) that is comprised of a microcontroller (120) integrated with a signal control circuit (200) to regulate the amount ...  
WO/2004/073152A2
A motor controller by which out-of-control can be correctly detected in a short time by a simple calculation using a controlled variable of a motor and the safety of a machine such as a crane can be improved. The coordinate system of the...  
WO/2004/073140A2
An excitation circuit for a flux switching motor. The circuit includes a low-value film capacitor across the DC side of a bridge rectifier. A plurality electronic switches are arranged in an H-bridge configuration for switching current f...  
WO/2004/057750A1
The invention relates to a device which is connected to an alternating current power source (AC/H, AC/N) and which comprises: a two-winding (W1, W2) induction single-phase electric motor (MOT), a phase-shifting capacitor (CM) which is di...  
WO/2004/051836A1
When a starting current runs through an auxiliary winding (S), a main PTC (12) and an auxiliary PTC (14) undergo self-heating for an increased electric resistance. When the auxiliary PTC (14) is heated to 140°C, a snap-action bimetal (1...  
WO/2004/051837A1
The invention relates to a device (1) for reducing the current consumption during the starting process of a single-phase a.c. asynchronous motor (M). Said device consists of a thermistor which can be mounted in series with the main windi...  
WO/2004/045059A2
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...  
WO2003100957A9
A power converter (500) for a switched reluctance motor or a permanent magnet brushless direct current (dc) motor including first and second partial circuits (553, 554) for forming multiple conduction circuits in cooperation with first a...  
WO/2004/038906A1
A circuit and method measures the voltage at the main motor winding (1) and detects the points in the electromagnetic wave cycle at which this voltage 'crosses' zero. The method and circuit also measures the voltage at the auxiliary moto...  
WO2003100956A9
A method for identifying an operational phase of a motor (203) may include obtaining a first value of a signal that is indicative of the operational phase of the motor (203) and obtaining a second value of the signal after a period of ti...  
WO/2004/027971A1
A remotely configurable motor controller system comprises a motor controller and a remote configuration device. The motor controller includes solid state switches for connection between an AC line and motor terminals for controlling appl...  
WO/2004/027973A1
A motor controller system comprises solid state switches for connection between an AC line and motor terminals for controlling application of AC power to the motor. A sensor senses AC line voltage. A control circuit controls operation of...  

Matches 551 - 600 out of 9,117