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Patent Searching and Data


Matches 501 - 550 out of 7,005

Document Document Title
WO/2005/107046A1
The invention relates to an electric machine (1) with an inner stator (2) and an outer rotor comprising a laminated electrical steel core (19), a rotor winding (20) and one or more housing parts (18, 21). The laminated electrical steel c...  
WO/2005/107036A2
The present invention relates to the use of stator windings of an induction machine to provide both rotation of the rotor and active rotor positioning within the stator frame by modification of the magnetizing current component in the D-...  
WO/2005/107048A1
The invention relates to electrical engineering, in particular to valve electric drives fed by a DC-voltage source. The inventive valve electric drive comprises an electric motor whose stator is provided with a closed-coil distribution w...  
WO/2005/099070A1
The invention relates to a cooling device for an electrical machine (10) that is cooled using a coolant. Said cooling device comprises a feeding apparatus (40, 42) by means of which coolant (38) can be delivered to the electrical machine...  
WO/2005/091475A1
An electric motor having a single field rotor wherein the flux within the rotor is generated by magnetic means located at the end regions of the motor housing such that the flux within the motor rotor maintains a constant polarity.  
WO/2005/086324A1
The invention relates to a three-phase asynchronous machine (1) comprising a stator (2) and a rotor (3). The stator (2) comprises a winding system, and the rotor (3) is embodied as a short-circuit rotor provided with at least two short-c...  
WO/2005/076435A1
The invention relates to an electromagnetic induction motor (1) consisting of a cover (10), a stator (20) and a rotor (30) comprising an armature (32) which is solidly connected to a rotary shaft (31). The stator (20) comprises a number ...  
WO/2005/062442A1
A power generating set, comprising a first core part (hollow cylindrical core part) (1), a second core part (cylindrical core part)(2), a plurality of extended core parts (radially extended core parts)(3) interposed therebetween and radi...  
WO/2005/053135A1
An electromagnetic rotary machine comprising a rotor (104) and a stator (102), the rotor and stator being mounted in co-axial alignment with respect to each other and arranged such that the rotor is rotatable relative to the stator about...  
WO/2005/050822A1
An electric motor operated by AC current, that includes a stator (11) and a rotor (14) supported for rotation about an axis relative to the stator. The stator is provided with field windings (12) angularly distributed about the rotor axi...  
WO/2005/050821A2  
WO/2005/046044A1
A variable speed power generator system, includes a primary power induction generator (12), a secondary control induction (14), each of the induction generators having a rotor (22, 24) mounted so as to be rotated by a common shaft (16) o...  
WO/2005/043705A2
An electrical generating system includes an electric motor coupled to a variable power source. A variable coupling is connected to an output shaft of the motor. The variable coupling includes opposed first and second plates each having p...  
WO/2005/034316A1
Disclosed is a squirrel-cage rotor (1) comprising squirrel-cage rotor conductors (3) and a support (5) for said squirrel-cage rotor conductors (3). The support (5) is provided with axial grooves (9) in which the squirrel-cage rotor condu...  
WO/2005/027308A1
To attenuate the parasitic air-gap fields of an electric machine, various measures are carried out on the stator (3) and/or rotor (7).  
WO/2005/011085A1
A support sleeve press-fitted onto an end ring of a rotor applies a compressive pre-load stress on the end ring to counteract centrifugal stresses generated during rotor operation. In one embodiment, the support sleeve is made of a high-...  
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/2004/114504A1
Single-phase asynchronous motor with stepped air gap that comprises a laminated stator having shorter and longer teeth and slots located between the shorter and longer teeth, the slots being adapted for receiving electromagnetic winding,...  
WO/2004/107539A1
An electric motor (10) comprises a stator (20) having a primary winding and a rotor (130a,b) arranged to rotate in the stator (20). The rotor comprises a shaft (160), a first magnetic rotor component (140) and a second magnetic rotor com...  
WO/2004/105216A1
A method for mounting and positioning an electric motor (1) in a motor seat (5). The motor (1) comprises a capacitor (4) projecting from the motor (1) and positioning means (11a, 12a) which couple with corresponding matching positioning ...  
WO/2004/100341A1
The present invention provides to a rotor having a short circuit ring of an electrically conductive material. The short circuit ring has a curved outer surface whereby the eddy-current braking effect on the rotor caused by the stray fiel...  
WO/2004/086591A1
The invention relates to an electrical machine and to an assembly method for an electrical machine. The electrical machine comprises a stator (1) that is housed inside a housing. The housing is closed by a housing cover (12). The electri...  
WO/2004/079879A2
An alternating current (AC) eletrical motor/generator electrodynamic machine and methods include, according to disclosed embodiments of the invention, providing a wound rotor having a polyphase AC winding and a damper winding. The machin...  
WO/2004/059066A1
This invention relates to a washer/dryer (1) which comprises a drum (3) that allows washing by rotating around its axis, a stator (5) placed onto the tub (2) in which the drum (3) rotates and a brushless asynchronous motor (4) which enab...  
WO/2004/059827A2
An induction motor for the conversion of electrical energy into mechanical energy is integrated with a wheel system or brake system of a transportation apparatus, and expecially human powered apparatus.  
WO/2004/057735A1
In order to prevent, among other things, fatigue failures in squirrel-cage rotors of electrical machines, the invention provides that the squirrel-cage winding is comprised of flexible conductors.  
WO/2004/055959A1
The invention relates to a double-fed asynchronous machine that is devoid of a slip ring. Said machine comprises a main machine (4) with three-phase windings in the main rotor (32) and main stator (34) and an inducer machine (6) with a d...  
WO/2004/055960A1
A rotating electrical machine, such as an aircraft starter-generator, includes an exciter that has its stator windings divided into a number of sections. A plurality of switches are electrically coupled to the exciter stator winding sect...  
WO/2004/054068A2
The present invention discloses a rotor for a line-start reluctance motor which improves core area efficiency to make flux flow in one direction. The rotor for the line-start reluctance motor includes a core (21) having an axis coupling ...  
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/2004/040740A1
The invention relates to a three-phase asynchronous generator (1) comprising a housing (2). A primary shaft (3) is mounted in the housing (2) and a drive element (4) can be coupled to said shaft from outside the housing (2). The primary ...  
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...  
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/2004/021549A1
A 4/6 pole PSC motor having main and auxiliary winding configurations. Common windings are energized in both a 4-pole configuration and energized in a 6-pole configuration for both the main and the auxiliary winding configurations. An ad...  
WO2003067739A9
A single phase, three-speed induction motor having 4, 6, and 8-pole speed configurations. In one embodiment, the motor is constructed and arranged to be used in connection with a washing machine. The 8-pole speed winding shares a portion...  
WO2003100948B1
A two-phase switched reluctance motor (fig.4) with a pluraty of rotor poles (404) having asymmetric reluctance (405) about a central raidla axis of the respective rotor pole and a plurality of salient stator poles (402) having the same w...  
WO/2004/001933A2
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...  
WO/2003/107509A2
The invention relates to a rotor for an electric machine (30), especially a short-circuit rotor for an asynchronous machine whereby the perimeter teeth (16) and grooves (13) alternate on the periphery thereof and the groove divisions (&t...  
WO/2003/100955A2
A motor having a rotor with a plurality of grooves extending generally longitudinally along an outer surface of the rotor. A cross-sectional shape of the rotor outer surface generally corresponds to the shape of an outer boundary of a fl...  
WO/2003/100944A1
A rotor for an electrical motor (100) may include a plurality of salient radial field rotor poles (109) and a plurality of salient axial field rotor poles (110). The radial field rotor poles (109) and the axial field rotor poles (110) ar...  
WO/2003/100958A1
A power converter for a switched reluctance motor (SRM) or a permanent magnet brushless direct current (dc) motor (PMBDCM) that includes a front-end boost partial circuit (551) for connecting with a first phase winding of the motor (552)...  
WO/2003/096519A2  
WO/2003/085801A2
A rotating induction machine, containing five or more different phases (1), having windings distributed according to a sinc function with a cutoff frequency allowing low-order spatial harmonics but preventing higher order spatial harnomi...  
WO/2003/073598A1
An electrical rotating machine comprises an inverter drive system (18) wherein alternating current comprising more than three phases is produced from the inverter drive system (18). The machine further includes a stator (10) comprising a...  
WO/2003/069762A1
Both the stator core and the roter core of a switching pattern AC induction motor are fabricated by weak magnetic substance laminations or ferrite material, etc., both of which have corresponding frequency characteristic. The rotor is a ...  
WO2002013652A9
A pump or compressor for transporting a fluid comprises an impeller that includes a plurality of impeller elements disposed for rotation imparting kinetic energy to the fluid. The impeller (200), which in one embodiment is an axial flow ...  
WO/2003/044928A1
An improved polyphase induction motor (400) having one or more capacitive elements (114, 114a, 114b) electrically connected in parallel with phase windings (102, 106, 302, 306), from an off-center tap (116, 116a) to an end (121, 104, 304...  
WO/2003/044927A1
The invention relates to an electrical machine having a first magnetic core provided with winding, and a flux-generating device comprising at least two flux-generating variable magnetic flux elements. These are arranged to vary the flux ...  
WO2002095902B1
An electomotive mechanism is provided including a stator assembly and rotor assembly. The stator assembly is provided with a plurality of stator rings, defining an annular aperture therebetween. A rotor assembly is disposable within the ...  
WO/2003/012292A1
The invention relates to a wind-energy installation comprising a (ring) generator with a stator. Said stator is provided with grooves, spaced at intervals on the internal or external periphery, for receiving a stator winding. The aim of ...  

Matches 501 - 550 out of 7,005