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Patent Searching and Data


Matches 601 - 650 out of 11,434

Document Document Title
WO2005020423A3
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/2005/073996A1
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...  
WO2004025822A8
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/2005/055410A1
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...  
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/2005/034330A1
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...  
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/2005/010630A1
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...  
WO2004073140A3
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/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...  
WO2004073152A3
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/2004/079890A1
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...  
WO2004045059A3
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/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...  
WO2004019269A3
A feedback response signal in a motor (18) drive system in response to injection of a high frequency carrier signal (Ic) provides information for determining motor (18) position and demagnetization detection. The high frequency carrier s...  
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...  
WO2003045724A3
In an electrically driven automobile, a dynamo-electric generating device(s), (12) is attached to one or more free-running wheels (8, 9) of the vehicle, which are not connected to the power drive of the vehicle. The free-running wheels (...  
WO2003105331A3
A generator starting system utilizes a portable universal battery pack to start an internal combustion engine of the generator. The system is adapted to utilize any one of a plurality of universal battery packs having outputs of varying ...  
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...  
WO/2004/025822A1
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/2004/025806A2
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/2004/025819A1
A control method of an induction motor suitable for an induction motor requiring a very large driving torque at the time of starting or acceleration of a textile machine, or the like, wherein a variable voltage variable frequency (VVVF) ...  
WO2004001933A3
This invention relates to an alternating current electric motor, single phase or multiphase or synchronous generator, with primary windings (main windings) and de-saturation additional windings. Each additional winding is fed through one...  

Matches 601 - 650 out of 11,434