Abstract: A rotary mechanism connects a first rotary part and a second rotary part, without using a coupling and while allowing an installation error between the first rotary part and the second rotary part. A rotation body includes a first rotary part and a first fixed part. A flat plate is fixed to the first fixed part of the rotation body and has rigidity in a rotating direction of the first rotary part and flexibility in an axial direction for the rotating direction. A motor includes a second rotary part coaxially fixed to the first rotary part of the rotation body and a second fixed part fixed to the flat plate.

Abstract: An axial flux motor may include a motor housing, a shaft rotatably mounted in the housing, and a stator mounted in the motor housing, and having a stator ring and a through-hole through which the shaft extends. Two rotors may be mounted on the shaft within the motor housing on opposing sides of the stator, each rotor having a plurality of magnets arranged radially on a stator-facing surface thereof. In addition, magnet wire may be wound on portions of the stator, the magnet wire comprising an inner coolant passage disposed within a copper tube, and a green glass coating on an outer surface of the copper tube, the green glass coating comprising glass solids, one or more of surfactants, solvents, and polymers.

Abstract: The present disclosure provides a transverse magnetic flux motor having a stator and a rotor. The stator adopts a tooth and yoke separation structure. Multiple stator teeth are arranged at intervals along the circumferential direction of a stator yoke. The stator teeth or the stator yoke are wound with a stator winding. The rotor is provided on one side of the stator near the stator teeth in the axial direction, and has a back iron and multiple permanent magnets arranged in sequence along the circumferential direction. The permanent magnets are magnetized along the axial direction, and the polarities of adjacent permanent magnets are different from one another.

Abstract: This axial gap motor includes: a stator; and a rotor provided so as to be opposed to the stator in an axial direction. The rotor includes an annular rotor yoke, and a plurality of magnets provided to contact one surface of the rotor yoke so as to be arranged at predetermined intervals along a circumferential direction with magnetic poles thereof being different alternately. The one surface includes a plurality of facing areas facing and contacting the plurality of magnets, and a non-facing area not facing the plurality of magnets. The non-facing area includes partial areas each located between a pair of the facing areas adjacent to each other in the circumferential direction among the plurality of facing areas. The partial areas are formed to be recesses recessed in the axial direction relative to the facing areas.

Abstract: A core used in an axial gap type rotating electrical machine includes an annular yoke having a plurality of through-holes disposed in a circumferential direction, and a plurality of columnar teeth disposed in the circumferential direction of the yoke, each of the plurality of columnar teeth including one end inserted into each of the plurality of through-holes. The yoke and each of the teeth are composed of a powder compact separate from each other, and the one end of each of the teeth is off-center in the through-hole.

Abstract: A method of manufacturing a permanent magnet for a rotor of an axial flux electric machine is described herein. The method includes forming multiple permanent magnet (PM) pieces to have the same shape. Each of the PM pieces has an inner radial surface, an outer radial surface, and a pair of side surfaces extending between the inner and outer radial surfaces. The method further includes attaching at least one of the side surfaces of each of the PM pieces to one of the side surfaces of another one of the PM pieces to form partitions configured to extend in a radial direction of the rotor.

Abstract: Provided is a voice coil motor including a housing assembly, a base assembly, a zoom lens holder, a first electromagnetic drive assembly, a focusing lens holder and a second electromagnetic drive assembly. The zoom lens holder and the focusing lens holder are disposed in an accommodation space formed by the housing assembly and the base assembly. The first electromagnetic drive assembly is configured to drive the zoom lens holder to move in a front-back direction and includes a first magnetic steel portion and a first coil disposed opposite to the first magnetic steel portion. The second electromagnetic drive assembly is configured to drive the focusing lens holder to move in the front-back direction and includes a second magnetic steel portion and a second coil disposed opposite to the second magnetic steel portion.

Abstract: A rotor for an axial flux motor, a radial flux motor, or a transversal flux motor, has a rotational axis which extends along an axial direction. The rotor extends in an annular manner and has a plurality of permanent magnets along the circumferential direction, the magnetization of each magnet being oriented in the circumferential direction, wherein the permanent magnets are mutually spaced along the circumferential direction, and at least one soft magnetic composite as a first material is arranged between the permanent magnets.

Abstract: The present disclosure relates to a modular system for producing drives, in particular piece goods conveyor drives, with different drive properties, comprising at least one first group of transmission units, said first group comprising at least one transmission unit, at least one second group of motor units, said second group comprising at least one motor unit, and a third group of electronic units, said third group comprising at least one electronic unit for actuating the motor unit, wherein the groups can be combined together in order to produce the drive.

Abstract: An electric motor includes an armature and a mover. The armature includes an armature coil. The mover includes a plurality of pole blocks each including an iron core disposed to face the armature and a plurality of permanent magnets which surround the iron core such that a surface of the iron core, which faces the armature, is open. The plurality of permanent magnets in each pole block are disposed such that magnetic poles thereof facing the iron core are equal in polarity.

Abstract: The present disclosure relates generally to rotors for electric motor assemblies and methods of making the same, and more specifically, to variable thickness rotors for axial flux motors. More specifically, annular-shaped rotors having interiorly disposed magnets for axial flux motors are provided in certain aspects. The variable thickness rotors may each include an annular-shaped body having a first thickness at a first radial position and a second thickness at a second radial position. The first radial position may be spaced apart from the second radial position. The first thickness may be greater than or equal to about 200% of the second thickness.

Abstract: A device for storing kinetic energy including a base assembly supporting a central vertical shaft and having a first ring of magnets mounted thereabout at a first radial distance from the central vertical shaft; and a rotatable disc rotatably mounted on the central vertical shaft and vertically displaceable on the central vertical shaft, the rotatable disc having a fixedly mounted second ring of magnets that are radially spaced from the central vertical shaft by approximately the first radial distance, wherein the rotatable disc weightlessly levitates above the first ring of magnets and has reduced gyroscopic precession forces.

Abstract: A motor includes a coil and a rotor plate positioned proximate to the coil. Magnets are affixed on the side of the rotor plate and arranged in a circle such that, upon rotation of the rotor plate, the magnets pass, successively, adjacent the coil. Each of the magnets is oriented in a plane that extends through each of the magnets from the north pole to the south pole thereof. The magnets include at least a first magnet, a second magnet, and a third magnet. The second magnet is adjacent the first magnet, and the third magnet is adjacent the first magnet. The north pole of the first magnet is spaced a predetermined distance from the south pole of the third magnet, and the south pole of the first magnet is spaced the predetermined distance from the north pole of the second magnet.

Abstract: An axial flux motor is disclosed, with at least one rotor, with at least one stator that has a stator yoke and at least one stator tooth made of a soft magnetic powdered material, which stator tooth has a tooth neck and a tooth head that adjoins the tooth neck and constitutes the pole face of the stator tooth, and with a fastening means that comprises at least one mechanical connecting element, which connecting element fastens the stator tooth to the axial flux motor. In order to embody this in a durable way, it is proposed for the stator tooth to have a fastening opening, which, starting from the pole face of the stator tooth, passes through its tooth head and tooth neck, with the mechanical connecting element being accommodated in the fastening opening in countersunk fashion relative to the pole face.

Abstract: A rotating electric machine includes a stator having a segment pair of first and second active part segments, and a rotor mounted for rotation about an axis of rotation relative to the stator and including a ring-shaped reaction element extending along a reaction element circle about the axis of rotation, with a circular arc of the reaction element circle running between the two active part segments. The rotor includes magnetizable regions arranged in series along the reaction element circle, with a non-magnetic region being arranged between two adjacent magnetizable regions. The first active part segment of the segment pair of the stator includes a number of electromagnets arranged in series along a course of the circular arc, and the second active part segment of the segment pair of the stator includes a number of permanent magnets arranged in series along the course of the circular arc.

Abstract: A motor has an axis of rotation and includes a housing, a first shaft coupled to the housing, and a second shaft coupled to the first shaft. The motor further includes a stator, a rotor coupled to the first shaft, a gearbox, and a bearing assembly coupled to the rotor. The stator includes an outer circumferential surface and an inner circumferential surface. The inner circumferential surface defines a stator bore around the axis of rotation. The rotor includes a first arm and a second arm. The first arm is configured to extend axially along the axis of rotation and within the stator bore, and the second arm is configured to extend radially from the axis of rotation. The first arm and the bearing assembly are positioned within the stator bore, and the second arm is positioned entirely outside of the stator bore.

Abstract: The present disclosure provides an electrical generator within an engine that includes a permanent magnet that emits a first magnetic field and is disposed on a first shaft; a first winding connected to a second shaft such that the first winding is positioned within the first magnetic field; a field winding disposed on the second shaft such that the field winding generates a second magnetic field that rotates as first shaft rotates relative to the second shaft; a second winding disposed on the first shaft, the second winding being positioned to receive the second magnetic field and provide a resonant emitter with an electrical power input to generate a third magnetic field when the first shaft rotates relative to the second shaft; and a resonant receiver disposed on an enclosure of the engine, positioned to receive the third magnetic field and convert the third magnetic field into an electrical output.

Abstract: A gravity energy generator that provides a better and efficient way to use electricity as a source of power. The gravity energy generator includes a horizontal casing, a plurality of magnets and a plurality of wiring. A magnet is positioned on a midpoint of a centered shaft that is adapted to rotate along the centered shaft from an electromagnetic field from the first pair of magnets placed on the first end and the second end within the interior of the horizontal casing. Other embodiments of the gravity energy generator include a horizontal casing, a plurality of magnets, a battery and a pair of copper plates as well as a horizontal casing, a plurality of magnets and a pair of magnetic push and pull devices.

Abstract: An electric machine having a rotor with a rotor core formed out of magnetically permeable material and defines a plurality of poles. Each pole includes a plurality of discrete axially extending magnet slots with at least one permanent magnet in each magnet slot. Each pole has a radial centerline and includes a plurality of voids defined by the rotor core. For each pole the magnet slots include at least one central magnet slot and two outer magnet slots, the outer magnet slot are positioned on opposite circumferential sides of the radial centerline of the pole and are at least partially positioned radially outwardly of a radially outermost edge of the at least one central magnet slot. Each of the plurality of voids is spaced from each of the magnet slots and positioned circumferentially between the outer magnet slots and radially outwardly of the at least one central magnet slot.

Abstract: Provided are a slim-type stator using a multilayer printed circuit board (PCB) in which a coil pattern is patterned on an uppermost PCB layer and a sensing coil pattern for detecting a rotor rotation position is integrally formed in a margin of the uppermost PCB layer, to thereby realize sensorless driving simply, and a sensorless single-phase motor using the slim-type stator, and a cooling fan using the sensorless single-phase motor. The slim-type stator includes: a multilayer PCB; a coil pattern patterned on respective PCB layers of the multilayer PCB and connected through throughholes; and a sensing coil pattern formed on an uppermost PCB layer to detect a rotor rotation position, wherein the sensing coil pattern is positioned and set at a position deviated from a magnetic pole interface of a rotor that is positioned and set by a dead point prevention yoke when the rotor is in an initial state.

Abstract: Hybrid aircraft propulsors having electrically-driven augmentor fans are disclosed. An example apparatus includes a turbofan having a core engine and a ducted fan to be rotated via the core engine. The ducted fan includes a plurality of ducted fan blades arranged circumferentially around the core engine and circumscribed by a nacelle. The example apparatus further includes an augmentor fan having an augmentor hub ring and a plurality of augmentor fan blades. The augmentor fan blades are arranged circumferentially around the augmentor hub ring and project outwardly relative to an outer surface of the nacelle. The augmentor fan is to rotate separately from the ducted fan. The example apparatus further includes an electrical drive to rotate the augmentor hub ring in response to a supply of electrical energy provided to the electrical drive.

Abstract: An alternator device for converting mechanical energy into electrical energy, including first rotating disk comprising first coils ducts; second rotating disk including second coil ducts; a magnet located intermediate the first and second rotating disks to generate first magnetic field having first magnetic pole at the first coil ducts and second magnetic field having second magnetic pole opposite the first magnetic pole at the second coil ducts; and a coil base intermediate the first and second rotating disks, the coil base to receive coils aligned with the first and second coil ducts; wherein the first and second rotating disks are adapted to rotate along a rotation axis while the magnet and the coil base remain in static position, rotation of the rotating disks enabling a rotational movement of the magnetic fields through the coils for generation of electric current within the coils, and a method of manufacturing such device.

Abstract: Apparatus and methods are described herein that provide a vibratory device that can apply a vibratory signal to a portion of a head of a user such that the vibratory signal can be conducted via bone to a vestibular system of the user and cause a portion of the vestibular system to move in a manner equivalent to that of a therapeutically effective vibratory signal applied to an area overlaying a mastoid bone of the user. The vibratory device can be associated with frequencies less than 200 Hz. The vibratory device can be effective at treating a physiological condition associated with the vestibular system.

Abstract: A lightweight and efficient electrical machine element including a method of manufacture providing a stator winding for an electric machine which has a large portion of its volume containing electrically conductive strands and a small portion of its volume containing of an encapsulant material. The stator winding includes winding of a first phase by shaping a portion of a bundle of conductive strands into an overlapping, multi-layer arrangement. Winding of successive phases occurs with further bundles of conductor strands around the preceding phases constructed into similar overlapping, multi-layer arrangements. The multiple phases are impregnated with the encapsulant material using dies to press the bundles into a desired form while expelling excess encapsulant prior to the curing of the encapsulant material. The encapsulated winding is removed from the dies after the encapsulant has cured. The encapsulant coating on the strands may be activated using either heat or solvent.

Abstract: A vibration motor includes a base portion arranged to extend perpendicularly to a central axis extending in a vertical direction; a shaft having a lower end fixed to the base portion, and arranged to project upward along the central axis; a circuit board arranged above the base portion; a single annular coil attached to the circuit board, and arranged to have the shaft arranged inside thereof; a bearing portion attached to the shaft to be rotatable with respect to the shaft above the coil; a rotor holder attached to the bearing portion; a magnet portion including a plurality of magnetic poles, and attached to the rotor holder; an eccentric weight attached to the rotor holder; a spacer attached to the shaft between the bearing portion and the coil, and including an upper surface arranged to be in contact with a lower surface of the bearing portion; and a cover portion arranged to cover, at least in part, upper and lateral sides of the rotor holder and the eccentric weight, and fixed to an upper end of the shaf

Abstract: A vibration motor includes a base portion arranged to extend perpendicularly to a central axis extending in a vertical direction; a shaft; a coil portion; a bearing portion; a rotor holder; a magnet portion; and an eccentric weight. The base portion includes a base magnetic portion made of a magnetic metal; and a base nonmagnetic portion made of a nonmagnetic metal, fixed to an edge portion of the base magnetic portion, and arranged to extend from the edge portion of the base magnetic portion perpendicularly to the vertical direction. The base magnetic portion includes a plurality of magnetic element portions arranged in a circumferential direction, and arranged at positions opposed to the magnet portion in the vertical direction. The base nonmagnetic portion includes a plurality of nonmagnetic element portions arranged to alternate with the magnetic element portions in the circumferential direction, and arranged at positions opposed to the magnet portion in the vertical direction.

Abstract: Some embodiments of the invention include a surveying apparatus that includes an optoelectronic distance measuring device having a measuring beam path, a base for placing the surveying apparatus, a support which is mounted on the base such that it is rotatable about a vertical axis, a beam directing unit which is mounted in the support such that it is rotatable about a tilting axis, an angle measurement system for measuring the axial positions, and an actuatable positioning device driving the beam directing unit or the support. In some embodiments the positioning device may include a plurality of coils which are arranged in a positionally fixed manner in the form of a ring about the tilting axis and/or vertical axis, with winding axes which are axially parallel to the tilting axis or vertical axis.

Abstract: The present disclosure illustrates a fan structure which includes an outer shell member, a rotating module and a circuit module. The outer shell member has a receiving groove, and an axis part and a fastening part. The fastening part includes winding columns. The rotating module includes the fan, an axis coupling part pivotally connected with the axis part, and a magnetic part disposed on a periphery of the axis coupling part. The circuit module includes a circuit board which has positioning holes formed on and annularly arranged the surface thereof. Position-limiting caps are respectively mounted and fixed on the winding column after the winding columns are inserted through the positioning holes. A conductive wire is wound on the winding columns to form coils, and has two ends welded on the circuit board. Therefore, defect rate and assembly cost of production of fan structure of the present disclosure can be decreased.

Abstract: The present invention provides an axial flux motor (10) having: a rotor (20) having a radially extending portion (20r) and an axially extending portion (20c) having a first side (20a) and a second side (20b); a stator (22) having an inner aperture (30), a front wall (34) having a first side (34s) and a second side (34i) and being axially spaced from the first side (20a) of the rotor (20) by a gap (38), a bearing member (32) within the inner aperture (30) of the stator (22) and supporting the axially extending portion (20c) of the rotor (20); a casing (40) having an axially and circumferentially extending outer portion (48) surrounding said rotor (20) and having an inner surface (43); a cover plate (42) having an inner face (42i) confronting and being spaced from said second side (20b) of said rotor (20); a containment chamber (26) including said second side (34i), and said inner face (42i) of said cover plate (42) and having a top portion (45); a sump (50) within the containment chamber (26); and one or more

Abstract: Sensor and/or power-harvesting apparatus are provided for sensing and/or harvesting energy across a relatively wide dynamic range of a driving rotational input. The apparatus may include a rotor magnet (10, 62) responsive to a driving rotational input (14, 64). Utilization of a togging effect or a magnetic spring effect results in certain rapid-rotation events where the rotor magnet can rapidly rotate regardless of a low rate of rotation of the driving rotational input. A coil assembly (28, 75) is magnetically coupled to the rotor magnet to generate a signal in response to rotation of the rotor magnet during the rapid-rotation events. This signal may be used to harvest electrical energy and/or may be processed to determine characteristics of the driving rotational input.

Abstract: A method and a system for controlling a motor are provided to allow for a limp home function when an error occurs in a Hall effect sensor that detects the position of a rotor while operating a motor used for an automotive electric water pump. The method includes determining an output error of a Hall effect sensor and stopping adjustment a speed of the motor based on output of the Hall effect sensor, in response to detecting an output error of the Hall effect sensor. Additionally, the method includes adjusting the speed of the motor based on a counter electromotive force generated by a plurality of stator coils having different phases in the motor.

Abstract: An object of the present invention is to provide a motor rotor support suitable for an axial gap motor and a method for manufacturing the same. The motor rotor support for supporting a magnetic body disposed on a rotor of a motor is configured by a nonmagnetic steel having a relative permeability of less than 1.005 and a 0.2% yield strength at room temperature of 550 MPa or more.

Abstract: A stabilization system for a rotating load, such as a flywheel, includes a mechanical bearing to continuously support a shaft of the rotating load so as to hold the shaft at a substantially fixed axis of rotation. A magnetic stabilization assembly includes a plurality of electromagnets arranged around the shaft. Control circuitry for controls a resultant magnetic field generated by the electromagnets such that the magnetic field acts on a ferromagnetic element of the shaft to reduce imbalance forces acting on the shaft.

Abstract: A brushless motor includes a stationary unit and a rotary unit rotatably supported with respect to the stationary unit. The stationary unit includes an armature and a base member arranged to support the armature. The rotary unit includes a magnet, a hub made of a magnetic material and a rotor yoke made of a magnetic material. The armature includes a plurality of coil patterns arranged along a circumferential direction. The hub includes an inner lower surface, an outer lower surface and a recess portion. The recess portion is arranged between the inner lower surface and the outer lower surface and depressed upward. At least a portion of the magnet is accommodated within the recess portion. At least one of the inner lower surface and the outer lower surface is positioned above a lower surface of the magnet.

Abstract: A motor vehicle having an electric motor driving a permanent magnet power transmission connected to the gear box of the vehicle. The magnet power transmission has first and second disk assemblies. A copper member on the first disk assembly faces a plurality of permanent magnets located in bores in the second disk assembly. A control assembly operatively connected to the second disk assembly selectively moves the second disk assembly and magnets toward and away from the first disk assembly to vary the flux between the first disk assembly and second disk assembly.

Abstract: Apparatus and methods to magnetize and demagnetize the magnetic poles of a rotor assembly for an electrical machine, such as a generator. The apparatus and methods provide for individually magnetize magnetic domains in the permanent magnetic material of the magnetic poles of a rotor assembly of the electrical machine after the electrical machine is installed in a larger assembly. The magnetization system may be used to magnetize and demagnetize the magnetic poles while the rotor assembly is connected with a prime mover, such a rotor of a wind turbine.

Abstract: A brushless motor includes a stationary unit and a rotary unit rotatably supported with respect to the stationary unit. The stationary unit includes an armature and a base member arranged to support the armature. The rotary unit includes a magnet, a hub made of a magnetic material and a rotor yoke made of a magnetic material. The armature includes a plurality of coil patterns arranged along a circumferential direction. The hub includes an inner lower surface, an outer lower surface and a recess portion. The recess portion is arranged between the inner lower surface and the outer lower surface and depressed upward. At least a portion of the magnet is accommodated within the recess portion. At least one of the inner lower surface and the outer lower surface is positioned above a lower surface of the magnet.

Abstract: A motor includes a base, a rotor unit and a driving unit. The base has opposite first and second surfaces. The rotor unit includes a magnet unit disposed on a rotatable magnet carrier to face the first surface of the base. The driving unit includes a circuit board disposed between the base and the magnet unit, induction coils disposed on the circuit board and operatively associated with the magnet unit, a sensor unit disposed on the circuit board and spaced apart from the induction coils, and a rotor positioning component disposed on the second surface of the base and capable of magnet attraction with the magnet unit for positioning the rotor unit relative to the sensor unit when the rotor unit stops rotating.

Abstract: A motor includes a base, a rotor unit and a driving unit. The base has opposite first and second surfaces. The rotor unit includes a magnet unit disposed on a rotatable magnet carrier to face the first surface of the base. The driving unit includes induction coils disposed on a circuit board, a sensor unit that is disposed on the circuit board and spaced apart from the induction coils and that defines a first reference line with the rotation axis, and a rotor positioning component disposed on the second surface of the base, extending along a second reference line, and capable of magnet attraction with the magnet unit for positioning the rotor unit relative to the sensor unit when the rotor unit stops rotating.

Abstract: A rotary actuator for positioning a recording head in a data storage mechanism and that includes first and second cylindrical subassemblies separated by an air gap. One of the subassemblies includes a magnetically conductive core with an electrically conductive coil wrapped thereover to enable first and second current flow directions in the circuit. The other of the subassemblies includes a magnetically conductive core and at least one magnet secured thereto. Transmission of an electric current through the electrically conductive coil induces rotation of one of the subassemblies relative to the other of the subassemblies to rotate the recording head about an axis that is perpendicular to recording media on the recording head. The disclosed rotary actuator facilitates quick and accurate recording head position changes due to low inertia of the rotating subassembly as well as reduced inductance and symmetrical mass distribution of the actuator.

Abstract: An electric motor includes a magnet rotor which is placed with an air gap interposed between it and a stator and has a magnetic pole portion formed from a plastic magnet which swells by hydrogen bonds, an inverter circuit, a DC-voltage conversion portion, a driving logic control portion, a supply current value control portion, a current value designation portion, a reference current value designation portion, and a correlation designation portion, wherein the correlation designation portion determines an average current value by changing the average current value linearly or non-linearly with respect to a reference current value, and the magnetic pole portion absorbs moisture to swell, thereby making the air gap smaller, at higher humidity than a reference humidity.

Abstract: A motor with power-generating coil set including a base, a rotor, a driving circuit and a power-storing unit is disclosed. The base has a shaft coupling portion and a supporting surface, wherein the supporting surface surrounds the shaft coupling portion, and a driving coil set and a power-generating coil set are disposed above the supporting surface. The rotor has a carrier, a shaft and a magnetic member, wherein the carrier has a coupling surface, the shaft rotatably couples with the shaft coupling portion of the base, and the magnetic member is mounted on the coupling surface and has a magnetic face facing the driving coil set and the power-generating coil set. The driving circuit electrically connects with and sends a driving signal to the driving coil set. The power-storing unit electrically connects with and stores electric power generated by the power-generating coil set.

Abstract: There is provided an axial gap type generator. The axial gap type generator includes: a stator core fixed to a crank case of an engine; a rotor yoke fixed to a crankshaft of the engine and opposing the stator core across spacing in an axial direction of the crankshaft; a first planar section provided in the crankshaft and formed to have a planar shape that is perpendicular to a rotation center axis; a second planar section provided at a base, at which the rotor yoke is mounted on the crankshaft, and disposed opposing the first planar section; and a shim clamped between the first planar section and the second planar section.

Abstract: The magnetic iron core includes an amorphous foil strip wound to form the magnetic iron core. Preferably, the magnetic iron core is filled with resin, the resin being disposed by using a spacer between pluralities of windings of the amorphous foil strip. Preferably, the magnetic iron core is covered with resin integrated with and continuous to the resin disposed between pluralities of windings of the amorphous foil strip.

Abstract: A fault tolerant virtual elliptical electric motor has at least four coil elements constrained in a stator case. A drive plate is supported by a fulcrum for nutating motion and has at least four core segments each associated with a respective one of the at least four coil elements for attraction upon activation. A control processor provides independent current control to each of the at least four coil elements for activation responsive to a received position command and a received wobble angle input, inducing the at least four coil elements to operate in a pure torque sum configuration upon the drive plate.

Abstract: The invention concerns a polyphase motor comprising M phases, M being equal to 2 or 3, the motor consisting of a stator part (1) excited by electric coils and by a magnetized rotor (2). The invention is characterized in that the rotor (2) has a disc-shaped magnetized part with R pairs of alternately poles magnetized in alternating directions in the thickness, R being equal to n*(M+1) or 5*n, and said stator part (1) has S poles, some of which excited at least by an electric coil, S being equal to 8*n, for even M, and 9*n for odd M, n being an integer not less than 1.

Abstract: A first bias magnetic flux may be communicated between a first axial pole and a first axial facing surface of the body. A second bias magnetic flux may be communicated between a second axial pole and a second axial facing surface of the body. A time-varying axial control magnetic flux may be communicated through the first and second axial facing surfaces of the body, and may be generated in a magnetic circuit including the body, the first and second axial poles, and an axial magnetic backiron. The first and second axial poles may include axial pole laminated inserts composed of electrically isolated steel laminations stacked along the body axis. The axial magnetic backiron may include laminated inserts composed of electrically isolated steel laminations stacked in the direction tangential to the body axis. The axial pole laminated inserts may be magnetically coupled to the axial magnetic backiron laminated inserts.

Abstract: An energy converting device having an eccentric rotor includes a fixed portion and an eccentric rotor. This fixed portion has a central axis, an outer frame, and several fixed coil portions. The eccentric rotor has a bearing, a rotatory shaft, an eccentric arm, an eccentric shaft portion, a supporting plate, an inner annular magnetic portion, and an outer annular magnetic portion. The inner magnetic portion and the outer magnetic portion are concentric and aligned with the eccentric shaft portion. The eccentric shaft portion is offset from the rotary shaft. When the rotary shaft of the eccentric rotor rotates, these fixed coil portions cut through the inner magnetic portion and the outer magnetic portion repeatedly, so magnetic flux passing through the coils alternates accordingly to generate electromotive force. Conversely, it can be used as an electric motor. In addition, it can be integrated with a cycloidal speed reducer to form a motor with speed reduction and torque augmentation capability.

Abstract: An electric machine comprising a permanent magnet rotor assembly is provided. The electric machine comprises a permanent magnet rotor assembly comprising a plurality of permanent magnets coupled to a rotor disk and a plurality of magnet shims coupled to the plurality of permanent magnets opposite the rotor disk. Each magnet shim of the plurality of magnet shims has a substantially complementary shape as a respective permanent magnet of the plurality of permanent magnets. The electric machine further comprises a stator core comprising a plurality of stator teeth that define a plurality of slots therebetween. At least one of the plurality of magnet shims is configured to direct magnetic flux from at least one of the plurality of permanent magnets to at least one stator tooth of the plurality of stator teeth.

Abstract: In the axial gap rotating electrical machine, the rotor includes a rotor yoke that is formed by wrapping amorphous ribbon wound toroidal core, which is obtained by winding an amorphous magnetic metal ribbon into a toroidal core. Magnets having plural poles are circumferentially disposed on a stator-facing surface of the amorphous ribbon wound toroidal core.