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Matches 1,101 - 1,150 out of 16,015

Document Document Title
WO/1996/031934A1
The invention concerns a rotary machine which comprises a driven rotor (2) and an electric motor (4, 14), with a stator (4) and a driving rotor. The stator (4) is also in the form of an electromagnetic bearing (4, 14) for the driving rot...  
WO/1996/028874A1
A self-starting controllable motor having a rotor mounted for rotation with a peripheral segmented portion formed of permanently magnetized material, a stator formed of laminated magnetized material having two legs surrounding the rotor,...  
WO1996022629A3  
WO/1996/027940A1
An electric machine has a separately excited rotor arrangement (1) that generates magnetic fields that follow each other in the direction of displacement (3) of the rotor and that correspond each to a whole magnetic period. The electric ...  
WO/1996/025320A1
The powerplant (17) for wheeled vehicles (10) has a permanent-magnet rotor (18, 19) of an electric motor associated with at least one wheel (12). The stator (21-23) of the motor has electromagnets (21) the number whereof is a multiple of...  
WO1996009679A3  
WO/1996/022629A2
A brushless DC motor comprises a rotor (20) and a stator (22) having confronting surfaces. Permanent magnets (M) are provided at one of the confronting surfaces, the magnets being equally angularly spaced around an axis (A-A) of rotation...  
WO/1996/021265A1
The aspects of this invention are the twelve offset PM toroid/rotors. These toroids are angularly off-set to a thirty degree arc. This alignment is electromechanically complemented by the helical windings of the stator (18), which are se...  
WO/1996/018287A1
An electrical rotating machine consisting of an induction machine operated by an inverter drive system, wherein many phases are used in place of the conventional three. The use of many phases has benefits not anticipated by the art, the ...  
WO/1996/017429A1
A commutatorless polyphase AC electric machine including a rotor core with a surface having alternating parallel projections and slots. Each slot has an opening at the stator surface which is substantially as wide as the widest portion o...  
WO/1996/015582A1
A flat reluctance type three-phase motor which can output a large torque and can rotate at a high speed is constituted of a flat fixed armature (16) having magnetic poles the number of which is an integral multiple of three on its outer ...  
WO1996003796A3  
WO/1996/009679A2
A machine comprising a stator and a rotor, where the stator includes at least one winding and the rotor comprises a body of soft magnetic material with a plurality of permanent magnets in a surface disposed proximate to the stator, with ...  
WO/1996/009683A1
This motor has a special magnetic circuit which enables it to be powered by a very simple electronic circuitry. This motor has, according to the figure, four U-shaped Yokes (11, 112) with eight unevenly spaced poles (111) surrounding a r...  
WO/1996/006793A1
In a permanent magnet synchronous motor (21) comprised in an elevator machinery (6), angle measurement is implemented by detecting the position of a rotor pole by means of a detector (1) measuring the magnetic field. The magnetic field g...  
WO/1996/003793A1
A permanent magnet housing (3b) and a magnetic gap (3c) are formed in a rotor (3), and a permanent magnet (4) and its position are set designed so that the minimum value of the distance from a portion of a boundary surface of the permane...  
WO/1996/003796A2
An electrical machine of the reluctance or permanent magnet type includes one or more pawns (24) of high permeance material which are relatively moveable along a plurality of C-shaped stators (20) which are regularly spaced at a predeter...  
WO/1996/002971A1
In a variable speed electronically switched d.c. motor, the stepwise or stepless speed adjustment is provided by means of the electronic variation of the current conduction angle between 90 �el and 180 �el. The phase winding of each ...  
WO/1996/001000A1
To improve the power of an electric asynchronous machine comprising a rotor, a stator, a winding allocated to the stator or rotor with at least two legs by means of which a circulating polar field can be generated and at least one curren...  
WO/1995/034935A1
The electric motor comprises a rotor (14) with a flat, permanent magnetic disc (15) which is rotatable about an axis of rotation (10), and an electromagnetic stator (16) with a stack of flat, electrically insulating supporting elements (...  
WO/1995/027326A1
A flywheel system having permanent magnets (20) embedded in a flywheel (10) rotating about a shaft (16) is provided with a stator (28) which is slidably mounted to the shaft (16) thereby allowing a gap g1 between the stator (28) and the ...  
WO/1995/024762A1
A brushless electric motor has a fluid-tight housing (30), an internal rotor (40), which is connected to an output shaft (10), stator plates (56), which are disposed at a radial spacing from the rotor (40), a coolant delivery line (28) l...  
WO/1995/022851A1
First, second and third zones (11a, 12a, ...) having different physical properties are disposed in this order on the outer periphery of a rotary disc (15) rotating synchronously with a motor. The lengths of the zones of these first to th...  
WO/1995/022192A1
A two-phase variable reluctance electric motor has four stator poles (81, 82), each pole having a magnetising winding. Pole (81) has a first phase winding and pole (82) has a second phase winding and the phases of the windings alternate ...  
WO/1995/022195A1
The invention relates to a D.C. motor (1) comprising a stator (60) with at least two stator coils (2, 3), a rotor (4) rotatably arranged relative to the stator, a position detector (5) for detecting predetermined rotor positions, an elec...  
WO/1995/012241A1
An electric motor is described, of the type that includes a rotor with permanent magnets and a stator with electromagnets, which operates at high efficiency to produce a high ratio of mechanical power output to electrical power input. Du...  
WO/1995/010134A1
An electric motor (10) including a stator and a rotor, the rotor includes a plurality of equispaced permanent magnets mounted on a non-magnetic disk, the stator includes a plurality of equispaced windings energised by a circuit means (12...  
WO/1995/003917A1
A grinding machine provided with a spindle (5) rotating under the influence of a cantilever mounted rare earth permanent magnet motor (40). Hydrostatic fluid film bearings (41, 42) are provided between the ends of the spindle (5) and a b...  
WO/1995/003646A1
A motor or alternator comprises a number of permanent magnets (34, 36) arranged about the periphery of a rotor (30). The magnets (34, 36) are encompassed by stator coils (44) pressed over and supported on the stator housing (41) between ...  
WO/1995/002915A1
An electromechanical machine (10) includes a field producing assembly (18) which is constructed so as to have an annular gap (20) circumferentially disposed about an axis of rotation and to produce a magnetic field across the gap (20) wh...  
WO/1995/002922A1
This reluctance motor rotates at a high speed with small vibrations, but develops a great output torque. The torque characteristic of the output torque is flat. The motor comprises a rotor having n (n is a natural number of 2 or more) sa...  
WO/1995/001884A1
The invention relates to a drive arrangement for a hybrid vehicle fitted with an internal combustion engine and an electric motor (4) which can be driven, as desired, at least for limited periods, purely by the internal combustion engine...  
WO/1994/029942A1
A flux path and core loss reduction assembly is provided. The assembly comprises a magnetizable peripheral rotor section (18) upon which armature windings (70e-84e) are disposed, isolated from the rest of the assembly by a non-magnetizab...  
WO/1994/028616A1
A method for smoothing the torque characteristics of a multi-phase PM synchronous machine by controlled driving with a conventional voltage source inverter operated in accordance with a predetermined switching sequence wherein the sum of...  
WO/1994/023911A1
A concentric-shaft rotational drive system for an articulated arm transfer device (3) adaptable for imparting movement to an assembly inside a vaccuum chamber (2) wherein rotary movement is imparted to rotors (7, 9) inside the vaccum cha...  
WO/1994/023490A1
A brushless repulsion motor (10) in which the rotor (17) carried electronic switch circuits (22) for selectively shorting the rotor windings (19) at appropriate times in its rotational cycle. A noncontact reference signal source (24) on ...  
WO/1994/023486A1
A permanent magnet generator (50) includes a rotor (56) having poles (P1-P12) wherein one of poles (P1) of the rotor is non-magnetic. A stator (54) has stator windings (106, 118, 130) wound in cooperation with the poles of the rotor. The...  
WO/1994/022206A1
This invention provides a brushless DC motor capable of ultra-high speed revolution by setting a gap length between a stator (1) and a portion of a rotor (2) having a metallic property to at least N5/6.p1/8.d.Kg.  
WO/1994/022204A1
This invention relates to high-density discoidal brushless induction open frame motors and generators with multistacking, multiphasing and multistaging capability. These motors may be in the range from 10 hp to 25,000 hp or more and thes...  
WO/1994/019914A1
Apparatus (21) is described for reproducing low frequency sound in response to an applied electrical signal having a rotary acoustic radiator (22) comprised of a chamber (26) having a rotor assembly (58) including a shaft (61) and movabl...  
WO/1994/019864A1
An economical reluctance drive/generator system including a double AC-fed reluctance motor (2) having two three-phase stator windings (p1 and p2) and a rotor (20) with simple salient poles. The speed of the motor (2) may be varied by alt...  
WO/1994/019855A1
A device for field weakening in a doubly-salient variable reluctance motor having permanent magnets (22, 24) in the stator (10). The field weakening increases the constant power range of the motor and is accomplished by controlled moveme...  
WO/1994/019859A1
A discoidal dynamo-electric machine has a discoidal stator (303) carrying a plurality of meandering copper windings (301, 302) embedded in a substrate having a magnetic permeability of less than 20, relative to air, and a discoidal rotor...  
WO/1994/017582A1
A motor system apparatus (100, 800) and method that converts pulsed electromagnetic energy into mechanical force and motion. Motor apparatus (100, 800) produces usable mechanical power by rotary action (A3) made possible by wheels (200, ...  
WO/1994/014226A1
A fault tolerant brushless DC motor includes plural parallel windings (17), each individually controlled by a respective control module (21). At least three windings are provided such that in the event there is a short in one of the wind...  
WO/1994/013051A1
Brushless dynamoelectric machines (30) utilizing conventional DC armature construction. The winding (17) of the armature (31) is modified by providing a set of three leads (37, 38, 39) to its coil ring circuit (36) at point spaced angula...  
WO/1994/013052A1
High power self-controlled multi-phase synchronous machine consisting of a movable magnetized rotor rotating in relation to a coaxial stator part (99) comprising electric coils for energizing stator magnetic circuits. The machine also co...  
WO/1994/011945A1
A method of estimating and controlling rotor position and velocity for a multi-phase brushless permanent-magnet motor (12) by measuring only the stator phase 5 currents (24) at a high sampling rate. Measurements of the stator phase curre...  
WO/1994/009549A1
The brushless DC motor (500) comprises at least one multi-pole composite magnet (4, 5, 30, 506, 1006) which functions as a rotor, at least one stator member (502, 1002) which determines the angular position of this rotor, means for posit...  
WO/1994/006198A1
A new class of higher phase-order (five or more) quasi square-wavbe back emf permanent magnet machines including radial, axial and linear embodiments which employ a greater number of active phase windings located in the slots between the...  

Matches 1,101 - 1,150 out of 16,015