Abstract: An electrical machine has a variable reluctance rotor, and a stator formed as an annular array of stator segments. The reluctance of the rotor-to-stator magnetic flux path varies with rotor position whereby the stator segments are magnetically energizable to rotate the rotor. The stator segments are arranged in the array such that, when energized to rotate the rotor, they produce an unbalanced force on the rotor. The machine further has a compensator including one or more balancing segments which are configured to be magnetically energizable to produce a balancing force on the rotor which balances the unbalanced force. The reluctance of the rotor-to-compensator magnetic flux path is substantially invariant with rotor position.

Abstract: A actuator and a pump using the actuator are provided. The actuator is used to drive a pump body. The actuator includes a base, a transmission assembly and a motor received in the base. The motor includes a stator, a rotor, and a driving shaft. The driving shaft is connected to the transmission assembly. The base includes a mounting bracket. The mounting bracket is partly embedded in the motor. The actuator has good integrality and a compact structure.

Abstract: Devices and systems for exchanging properties between at least two fluid streams and related methods may include a valve device comprising a valve actuator configured to move at variable rates in order to selectively fill and empty at least one tank. Devices for exchanging properties between at least two fluid streams may include a valve device comprising staggered and overlapping openings positioned along a path of a valve actuator. The staggered and overlapping openings may be configured to selectively and gradually place an inlet in communication with at least one tank.

Abstract: An axial gap motor rotor opposes a stator in an axial direction. The axial gap motor rotor includes a rotor core and a magnet. The magnet is arranged on the rotor core. The magnet is configured so that one axial end includes magnetic poles that alternately change in a circumferential direction. The rotor core includes a base, which is located at a center in a radial direction, and radial extensions, which are extended from the base outward in the radial direction and arranged in the circumferential direction. The magnet is configured to at least partially overlap the radial extensions in the axial direction. The radial extensions are located to include a boundary of adjacent ones of the magnetic poles in the circumferential direction.

Abstract: A method of manufacturing a magnetic pole piece includes molding a magnetic body having an outer wall and an inner wall extending between a first end and a second end, and a trim cap disposed at the first end. The method further includes fixing a non-magnetic isolator to the magnetic body between the outer wall and the inner wall and removing the trim cap.

Abstract: An actuator includes a housing member configured for connection with a first component, a drive screw connected to the housing member, a rod disposed at least partially in the drive screw and at least partially in the housing member, a retaining nut connected to the rod, a mounting member configured for connection with the first component, and a drive nut engaged with the drive screw and configured for connection with a second component. If the drive screw mechanically disconnects or is fractured, the rod may be configured to translate to engage one or more friction surfaces to restrict back driving of the drive screw.

Abstract: An electric drive unit and method of assembling the same is disclosed. The electric drive unit includes a rotor having a rotor shaft, and gear shaft, where the rotor shaft is inserted into the gear shaft. The gear shaft is supported by two bearings, while the rotor shaft supported directly at one end by a bearing and at the other by the gear shaft. A wave spring is also disclosed that provides an axial loading to the rotor shaft. Also disclosed is a balancing ring secured to an end of the rotor via a locknut. The balancing ring can be machined in order to balance the rotor. The rotor shaft can be connected to the gear shaft via a spline connection. The rotor shaft can bear against the gear shaft via a pilot journal and pilot bore defined on the rotor shaft and gear shaft respectively.

Abstract: A secondary part, which defines a magnetic path for a primary part of a linear motor, includes a spacer element having a plurality of mounting points that, in an application, are configured to fasten the secondary part. Two yoke plates that form lateral sides are configured to be fastened to the spacer element such that the two yoke plates extend in mutual opposition, orthogonally to the magnetic path. The two yoke plates are configured to accommodate a plurality of permanent magnets on respective inner sides thereof. The two yoke plates have, on respective outer sides thereof, a reinforcing structure that is formed by a periodic variation of plate thickness in the direction of the magnetic path. Local minima of the reinforcing structure overlapping with the mounting points along the direction of the magnetic path.

Abstract: The invention refers to an electric machine (300) and a hand guided and/or hand held electric power tool (1), comprising an electric motor (15), a working element (9) and a gear arrangement functionally located between the motor (15) and the working element (9). The electric motor (15) has a stator (100) with electrical windings (102) and a rotor (104) with permanent magnets (106) mounted thereon.

Abstract: An axial electric motor/generator having an inline stator and an inline rotor is provided. In one exemplary embodiment, a system comprises a housing, a shaft, and a slice assembly disposed about the shaft. The slice assembly includes a rotor assembly having a rotor plate and a set of isolated permanent magnets. A magnetic flux of each permanent magnet flows in an opposite direction to that of each adjacent permanent magnet. The slice assembly also includes a stator assembly having a stator plate and a set of isolated coil assemblies. Each coil assembly has an insulated wire wound about a metal core. The wound wire is normal to the magnetic flux of each permanent magnet when proximate the corresponding coil assembly. At least one of the set of isolated coil assemblies is configurable to output electrical power while the shaft is rotating or to input electrical power to rotate the shaft.

Abstract: An automobile is provided with a hub motor having a simplified structure to make an automobile more cost effective, while also increasing a handling stability as well. The hub motor includes a center shaft, a brake disc fixedly connected with the center shaft, a coil support sleeved on the center shaft, and a motor controller. The motor controller advantageously controls a supply of alternating current to the coils to selectively provide forward movement power for the wheel; implement braking or reverse rotation of the wheel; and charging a power supply to implement braking energy recovery.

Abstract: A method of manufacturing a magnetic pole piece includes molding a magnetic body having an outer wall and an inner wall extending between a first end and a second end, and a trim cap disposed at the first end. The method further includes fixing a non-magnetic isolator to the magnetic body between the outer wall and the inner wall and removing the trim cap.

Abstract: An electric motor, in particular a radiator fan motor of a motor vehicle, has a rotor which is mounted such that it can rotate in relation to a stator, a motor mount which has an electronics compartment for accommodating a converter electronics system, and an electronics compartment cover. The electronics compartment cover has a peripheral sealing groove into which a peripheral edge of the electronics compartment engages by way of a corresponding sealing web in order to reliably seal off the electronics compartment.

Abstract: An electric motor, in particular a radiator fan motor of a motor vehicle, has a rotor which is mounted such that it can rotate in relation to a stator, a motor mount which has an electronics compartment for accommodating a converter electronics system, and an electronics compartment cover. The electronics compartment cover has a peripheral sealing groove into which a peripheral edge of the electronics compartment engages by way of a corresponding sealing web in order to reliably seal off the electronics compartment.

Abstract: An alternator device includes a first rotating disk having a first set of spaced intervals between rotor teeth; a second rotating disk having a second set of spaced intervals between rotor teeth; a permanent magnet located intermediate the rotating disks and to generate a first magnetic field having a first magnetic pole at the first rotating disk and a second magnetic field having a second magnetic pole opposite the first magnetic pole at the second rotating disk; and a coil base located intermediate the first and second rotating disks, the coil base receiving coils in alignment with the first and second spaced intervals; wherein the rotating disks rotate along a rotation axis while the magnet and the coil base remain in a static position, the rotation of the rotating disks enabling a rotational movement of the magnetic fields through the coils for the generation of electric current within the coils.

Abstract: A permanent magnet machine and a rotor assembly for the permanent magnet machine. The permanent magnet machine includes a stator assembly including a stator core including a stator winding to produce electrical currents. The stator assembly extending along a longitudinal axis with an inner surface defining a cavity. The rotor assembly including a rotor core and a rotor shaft. The rotor core is disposed inside the stator cavity and rotates about the longitudinal axis. The rotor assembly including a plurality of permanent magnets for generating a magnetic field which interacts with the stator winding to produce the electrical currents in response to rotation of the rotor assembly. within one or more cavities formed in a sleeve component. The sleeve component is configured to include a plurality of cavities or voids into which the permanent magnets are disposed to retain the permanent magnets therein and form an interior permanent magnet generator.

Abstract: The present invention discloses a magnetic rotary disc, which mainly comprises a metal rotary body and a plurality of magnetic elements. The metal rotary body is formed of metal iron, the magnetic elements are arranged on peripheral edge of the metal rotary body in a uniform distribution. Each magnetic element comprises a first magnetic pole portion and a second magnetic pole portion. All of the first magnetic pole portions and the second magnetic pole portions respectively belong to upper portion and lower portion of the magnetic elements. Most particularly, in all magnetic elements, the lower side of the second magnetic pole portion of any magnetic elements and the upper side of the first magnetic pole portion of the other magnetic elements partially attract each other, so that only the magnetic force lines of the first magnetic pole portions are retained outside the peripheral edge of the metal rotary body.

Abstract: An induction machine with integrated magnetic gears is disclosed. The machine comprises two rotors and two stators. An outer stator has ferromagnetic material, producing a rotating magnetic field with a defined number of pole pairs synchronized with a supply frequency. A high speed rotor has ferromagnetic material and a combination of rotor bars and permanent magnet pole pieces selected so that the permanent magnet pole pieces do not interact with the outer stator magnetic field. The high speed rotor rotation is asynchronously coupled to the outer stator magnetic field. An inner stator has ferromagnetic steel segments that modulate the field produced by the high speed rotor permanent magnets. A low speed inner rotor has ferromagnetic material and permanent magnet pole pieces, the low speed inner rotor counter-rotating to the high speed rotor. The low speed inner rotor is synchronously coupled to the high speed rotor using modulation harmonics.

Abstract: An electrical machine including a moveable permanent magnet configured to generate a first magnetic field. A stator including windings configured to excite a second magnetic field. A moveable inter-pole component located between the permanent magnet component and the stator, the inter-pole component comprising an array of magnetic inter-pole pieces. The speed of movement of the inter-pole component is controlled to set a magnetic gear ratio between the first and second magnetic fields. Also a gas turbine engine, propulsor or thruster incorporating the electrical machine.

Abstract: An electrolytic plating apparatus capable of establishing electric connection between a power supply and a substrate without physical contact is disclosed. The electrolytic plating apparatus includes: a plating tank configured to hold a plating solution therein; an anode disposed in the plating tank; a substrate holder having an electric contact arranged to be able to contact a substrate; a power supply coupled to the anode; a wireless electric-power transmitter coupled to the power supply; and a wireless electric-power receiver mounted to the substrate holder and electrically connected to the electric contact.

Abstract: A dual shaft integrated motor includes an inner rotor and an outer rotor that are independently rotatable and rotate in an identical pivotal direction. The inner rotor, an inner stator, an outer stator, and the outer rotor are sequentially arranged from a pivot in a radial direction. The inner stator and the outer stator interpose a non-magnetic body therebetween, the non-magnetic body being provided at a position contiguous with the inner stator and the outer stator along a circumferential direction centering on the pivot.

Abstract: A diaphragm pump configuration may include an eccentric drive assembly that is configured to be actuated by a motor shaft of a motor including an external magnetic rotor and an inner electrical stator that is contained in the external magnetic rotor. Two bearings may rotatably support the motor's drive shaft such that one bearing is positioned on one side of the eccentric drive assembly, and the other bearing is positioned on the other side of the eccentric drive assembly. The diaphragm pump configuration decreases considerably the workload on the bearing nearest to eccentric drive assembly, and significantly increases the operation time of the diaphragm pump.

Abstract: A powered actuator unit for use in a closure system of a motor vehicle. The powered actuator unit includes a common housing configured to house a brushless DC (BLDC) electronic motor unit, a gear drive unit, a shift support arrangement, and a controller arrangement. The motor unit has a stator unit that includes a plurality of electromagnetic subassemblies each having a carrier and a winding unit. The carrier includes an outer ring segment being planar and an inner ring segment being arcuate and a web segment interconnecting the outer ring segment and the inner ring segment and the plurality of electromagnetic subassemblies are each adapted to abut one another in an annular arrangement upon assembly. The outer ring segments define an outer peripheral surface of the stator unit having a polygonal cross-section and the inner ring segments define a rotor cavity having a circular cross-section.

Abstract: An axial gap type rotating machine that provides high productivity at low cost and high performance is presented. Specifically, an axial gap type rotating machine comprising: in a housing, a rotating shaft; at least two rotors comprising at least two rotor cores being rotatable together with the rotating shaft as a central axis and being disposed perpendicular to the rotating shaft with an interval along the rotating shaft, and at least two permanent magnets and at least two soft magnetic members arranged in a predetermined configuration; and at least one stator comprising a soft magnetic or nonmagnetic stator core and a coil wound on the stator core, wherein the at least one stator is fixed to the housing and disposed in a gap between the at least two rotors.

Abstract: An apparatus for cooling a computer system includes a primary cooling loop. The primary cooling loop includes an evaporator configured to cool at least a component of the computer system, an ambient cooled condenser connected to the evaporator, a first pump to provide a coolant flow within the cooling loop, a pressure regulator configured to maintain a selected pressure in the primary cooling loop, and a controller responsive to changes in outdoor ambient conditions and an amount of heat dissipated by the computer system and configured to dynamically adjust the pump and pressure regulator in response thereto.

Abstract: A system and method for controlling bending modes of a rotor assembly is disclosed. The rotor assembly can be supported by one or more bearings in an integrated machine. The method can include accelerating the rotor assembly to a first rotational speed via a first torsional force applied to the drive shaft and then removing the first torsional force. The method can also include obtaining first measurements of the rotational speed and frequency of one or more bending modes of the rotor assembly during a first rotary machine coast down period from the first rotational speed. The process can be repeated to determine a relationship between rotational speed, bending mode frequency, and gain. The one or more bearings can then be controlled based on the measurements and the relationship. The system can have one or more processors or controllers to implement the method.

Abstract: A flux machine includes a stator and a rotor. A set of electrical coil assemblies with side surfaces and sets of plural permanent magnets are arranged circularly on the stator and the rotor. Pole faces of the magnets are positioned adjacent to and spaced apart from side surfaces of permeable cores of the coil assemblies. In each coil assembly a pair of like pole faces of the magnets mutually face across the permeable core and a third magnet pole face faces transversely relative to the mutually facing pole faces of the pair of magnets.

Abstract: A wind power generator has a nacelle; a hub rotatable about an axis of rotation with respect to the nacelle; at least two blades fitted to the hub; an electric machine which is fitted to the nacelle, is bounded by an inner surface extending about the axis of rotation, and has a rotor and a stator; and a cooling system for airflow cooling the electric machine, and which has a deflector body for defining a gap between the deflector body and the electric machine and guiding the airflow into the gap.

Abstract: The described technology relates to a motor using a complex magnetic flux, which uses a radial magnetic flux and an axial magnetic flux together, thereby generating a larger torque in the same volume. The motor can also use a radial magnetic flux, an axial magnetic flux, and an oblique magnetic flux together, thereby generating a larger torque in the same volume.

Abstract: A transport apparatus including a housing, a drive mounted to the housing, and at least one transport arm connected to the drive where the drive includes at least one rotor having at least one salient pole of magnetic permeable material and disposed in an isolated environment, at least one stator having at least one salient pole with corresponding coil units and disposed outside the isolated environment, where the at least one salient pole of the at least one stator and the at least one salient pole of the rotor form a closed magnetic flux circuit between the at least one rotor and the at least one stator, and at least one seal configured to isolate the isolated environment where the at least one seal is integral to the at least one stator.

Abstract: A method for power conversion generally includes a step of generating a drive current in a first winding of an electromagnet in a motor mode. The electromagnet may be mounted spatially proximate a rotor and has a bifilar coil. The bifilar coil may have a pair of conductors that form the first winding and a second winding. The second winding may be spatially parallel to, spatially separated from, and electrically isolated from the first winding. The rotor may be rotatably mounted and has a plurality of permanent magnets. Further steps generally include rotating the rotor in response to the drive current, removing the drive current from the first winding in a generator mode and inducing a load current through the second winding to an electrical load in response to a torque applied to the rotor.

Abstract: An electric fan-type power generating device with low energy consumption includes a housing receiving an electric motor connected to a first fan. A generator is mounted in the housing and is connected to a second fan. The first and second fans are offset from each other. A power device includes a chargeable battery for supplying electricity to the electric motor that drives the first fan to generate wind power close to the second fan. Air flows around in a housing and generates turbulence to proceed with input and output of air, increasing the heat dissipating effect of the electric motor and the generator. Furthermore, the second fan drives the generator to generate electricity supplied to the chargeable battery. The chargeable battery recycles the electricity and supplies the electricity to the electric motor that operates to generate wind power. Furthermore, the wind energy drives the generator to continue generation of electricity.

Abstract: A stator is provided for an electric machine. The stator includes a plurality of teeth which are each designed such that a winding can be arranged on them. The teeth are at a first angle in relation to the longitudinal axis in a first region which extends in the axial direction of the stator. The teeth are at a second angle, which differs from the first angle, in relation to the longitudinal axis in a second region which extends in the axial direction of the stator. A third region in which the teeth are electrically insulated is arranged between the first region and the second region.

Abstract: Embodiments of a modular motor assembly are disclosed. In some embodiments, a motor comprises a plurality of modular magnetic units, where each of the modular magnetic units includes at least one rotor and at least one stator. The motor further comprises a plurality of structural segments each adapted to support a stator of a corresponding one of the modular magnetic units, where each of the structural segments interlocks with a next structural segment to form a stack. A method of manufacturing a motor includes arranging a selected number of modular magnetic units, coupling the selected number of modular magnetic units to a shaft, coupling the selected number of modular magnetic units to respective structural segments, and forming electrical connections to apply three-phase voltage to stator windings of the modular magnetic units.

Abstract: A blower motor assembly includes a blower wheel and a motor. The blower wheel includes an integrally formed hub. The motor includes a shaft rotatable about an axis. The hub presents a radially inner hub surface that at least in part defines a hub opening. The inner hub surface defines an inner cross-sectional dimension. The shaft is axially received within the hub opening, such that the blower wheel is supported by the shaft for rotational movement. The shaft includes a toothed region defining a plurality of arcuately spaced apart teeth. Each of the teeth includes a cutting edge. The teeth present an outer cross-sectional dimension that is great than the inner cross-sectional dimension of the inner hub surface, such that the cutting edges of the teeth cut a plurality of grooves in the inner hub surface as the shaft is axially received in the hub opening.

Abstract: A magnetic propulsion drive system provides power output by including the use of permanent magnets repelled by electromagnets on adjacent rotor assemblies. In some embodiments, the electromagnets may be inactive until synchronized to face an opposing permanent magnet of the same polarity. The electromagnet may be energized thus causing a repellant force with the permanent magnet causing radial momentum in the rotor assembly to rotate a larger drive module of rotor assemblies. Embodiments may include two or more drive modules arranged to position opposing magnets of the same type so that each drive modules is driven producing and output torque through a drive shaft. Some embodiments include a stator element which may be a cage surrounding the rotor assemblies. Interaction of the magnets with the stator simultaneously provides electric field generation and current while producing mechanical drive output.

Abstract: A bearing arrangement for mounting a wheel and an electric motor or generator having a stator and a rotor to a vehicle, the bearing arrangement comprising a sealing element and a bearing block, wherein the bearing block includes a first coupling element for coupling to a first radial wall of the rotor and the wheel, and a second coupling element for coupling to the stator and/or the vehicle, with a first bearing mounted between the first coupling element and the second coupling element to allow the first coupling element and the second coupling element to rotate relative to each other, wherein the first coupling element includes a mounting flange having a bolt hole arranged to extend through the mounting flange for receiving a bolt at a first aperture of the bolt hole for coupling the rotor and the wheel to the first coupling element, wherein the sealing element is arranged to be mounted over a second aperture of the bolt hole for inhibiting the ingress of dirt through the bolt hole.

Abstract: A method and assembly of a dry cavity oil cooled electric machine includes a housing, a shaft configured to operably couple with a source of rotational force and rotate about a rotational axis, and an exciter rotor and a permanent magnet generator rotor carried by the shaft, wherein the exciter rotor and the permanent magnet generator rotor rotate relative to the housing, which provides such a construction of dry cavity generators that have high efficiency and high power density.

Abstract: A laminated core can be contained in a rotor and/or in a stator and include at least one first sheet metal part assembly and at least one second sheet metal part assembly. The two sheet metal part assemblies are arranged alternately lying one against the other in a stacking direction. Every first sheet metal part has first teeth projecting from a connecting part radially relative to the axis of rotation. Correspondingly, every second sheet metal part has second teeth projecting from a second connecting part. The first teeth extend from the axis of rotation at a distance different from how far the second teeth extends from the axis of rotation to form a step to mesh the rotor with an associated stator and increase the air gap between them without increasing dimensions of the laminated cores in the stacking direction.

Abstract: A variable vane mechanism for adjusting the angle of stator vanes in a gas turbine engine is provided. The mechanism includes a circumferentially extending unison ring that is driven circumferentially around a casing by an actuator. The unison ring is connected to the stator vanes via levers such that the angle of the vanes changes with circumferential movement of the unison ring. The unison ring and the casing are each provided with at least one rigging hole in order to set the initial angle of the vanes. At least one of the unison ring and the casing are each provided with at least two rigging holes, so that the initial angle of the vanes can be adjusted by selecting different combinations of rigging holes. This may allow accumulations in tolerances to be compensated for and/or may allow the engine to be tested at different initial vane angles.

Abstract: A motor including a sealed rotor with at least one salient rotor pole and a stator comprising at least one salient stator pole having an excitation winding associated therewith and interfacing with the at least one salient rotor pole to effect an axial flux circuit between the at least one salient stator pole and the at least one salient rotor pole.

Abstract: A planar energy conversion device with a plurality of micro-conversion units is provided and includes a carrier. The carrier includes a plurality of cavities arranged horizontally. The cavities correspond in position to the micro-conversion units, respectively. Each micro-conversion unit includes: a magnetic rotor disposed in the corresponding cavity; and at least one ring-shaped stator surrounding the magnetic rotor, the magnetic rotor being integrated into the carrier and including a magnet component and a winding unit. The magnet component has multiple protruding portions horizontally arranged along the edge of the corresponding cavity. The winding unit has multiple winding elements corresponding in position to the protruding portions, respectively.

Abstract: A seal assembly for a submersible pumping system is presented. The seal assembly includes a housing and a support tube disposed within the housing. Further, the seal assembly includes a shape memory alloy (SMA) foil disposed within the housing, surrounding the support tube to define a first chamber between the shape memory alloy foil and the support tube. The first chamber is configured to store a motor fluid, and wherein the shape memory alloy foil is configured to restrict a flow of a wellbore fluid to the motor fluid.

Abstract: An electric drive assembly for a motor vehicle comprises a high-speed electric machine with a nominal rotational speed of at least 20,000 revolutions per minute and with a high-speed rotor that can be used as a flywheel mass for storing kinetic energy; a superimposed transmission having a drive element, a regulating element and a driven element, wherein the drive element is drivable by an electric machine around a drive axis, wherein the regulating element is rotatable around a regulating axis and wherein the driven element is drivingly connected to the regulating element and the drive element; an electromagnetic regulating device having a stator and a rotor that is connected to the regulating element in a rotationally fixed way, wherein by means of magnetic forces acting in the circumferential direction between the stator and the rotor, a regulating moment can be transmitted to the rotor, wherein the magnetic forces are variably adjustable.

Abstract: Aspects of the invention provide a system and method for detecting inter-circuit faults within a generator stator. In one embodiment, a computer system includes: a sampler for sampling phase voltages and phase currents of a generator stator; a plurality of pre-defined blocks for enabling, based on the sampled phase voltages and currents, an inter-circuit fault detection scheme; a level detection block for determining, in response to the enabled inter-circuit fault detection scheme, a plurality of differences between the sampled phase voltages; and a comparison logic device for comparing, in response to the enabled inter-circuit fault detection scheme, each of the differences of the sampled phase voltages and determining, based on the differences, an inter-circuit fault within at least one phase of the generator stator. The system may also include a negative sequence voltage block for detection of inter-circuit fault within a generator stator.

Abstract: The present invention provides methods and systems for an electrical motor or power generator device that includes a housing having a front end cap and a rear end cap, and a shaft rotationally engaged to the front end cap and rear end cap. The device includes at least one in-line stator including an external ring disposed around a centrally located bore for receiving the shaft, and at least one opening within the external ring for receiving a coil assembly. The device further includes at least one in-line rotor that includes a plate with a centrally located bore for receiving the shaft, and at least one opening within the plate for receiving a magnet assembly.

Abstract: Provided is a hydroelectric power generator for a pipeline that is installed at a position in a pipeline to generate electricity using a rotating turbine by inducing a flow velocity of water therein and uses environment-friendly energy through the water velocity while varying in size in accordance with the size of a pipeline to generate electricity even at a low-speed stream. The hydroelectric power generator for a pipeline generates electricity with high efficiency by increasing an angular speed at the same flow speed by adjusting the number and radius of turbine blades.

Abstract: An apparatus includes a shaft, a first barrel, and a second barrel. The shaft has a first end, a second end, and a longitudinal axis of rotation. The first barrel surrounds a first portion of the shaft and is fixed to the shaft to rotate therewith. The second barrel surrounds a second portion of the shaft and is configured to rotate about the axis independent of a rotation of the shaft.

Abstract: A rotor includes an inner wall and an outer wall, where the inner wall forms a space and is radially centered along a central longitudinal axis of the rotor. The rotor further includes a first magnetic pair of legs corresponding to a first pole. The first leg and a second leg of the first magnetic pair of legs are disposed within the rotor, and a first angular distance between the first leg and the second leg decreases from the outer wall to the inner wall. A second magnetic pair of legs corresponding to a second pole that differs from the first pole, a third leg and a fourth leg of the second magnetic pair of legs being disposed within the rotor to extend radially inward from the outer wall toward the inner wall, a second angular distance between the third leg and the fourth leg decreases from the outer wall to the inner wall.

Abstract: To obtain a permanent magnet type motor capable of securing controllability of a motor and utilizing reluctance torque. An armature winding is a plurality of sets of polyphase windings; the plurality of sets of the armature winding is supplied with current from each individual inverter; the rotor core is provided with permanent magnets on a surface portion thereof, the permanent magnets being circumferentially arranged and the adjacent permanent magnets having polarities opposite to each other; a protrusion portion is provided between the adjacent permanent magnets, the protrusion portion being provided in a protruding condition from the rotor core and being made of a magnetic substance; and a non-magnetic gap portion is interposed between the protrusion portion and the permanent magnet in a rotating shaft direction.