Abstract: A rotating electric machine includes a field system, which includes a magnet section, and an armature. The magnet section includes a plurality of magnets that are arranged at predetermined intervals and in alignment with each other in a circumferential direction. The magnets have easy axes of magnetization oriented such that at locations closer to a d-axis, the directions of the easy axes of magnetization are more parallel to the d-axis than at locations closer to a q-axis. In the magnets, magnet magnetic paths are formed along the easy axes of magnetization. The field system further includes a field-system core that is formed of a soft-magnetic material. The field-system core has protrusions protruding to the armature side. Each of the protrusions is located closer to the q-axis than to the d-axis in the circumferential direction. Circumferential end surfaces of the protrusions respectively abut circumferential end surfaces of the magnets.

Abstract: An electric machine rotor including a rotor core having a plurality of magnets and several pairs of elongated slots circumferentially distributed on the rotor core. Each pair of elongated slots jointly forms a V-shaped configuration with an opening facing an outer periphery of the rotor core. Each elongated slot includes a mounting portion that matches the shape of the magnet and an end hole located at an end of the elongated slot pointing to the outer periphery. The end hole includes a main body area and a lobe area, and the lobe area extends from the main body area toward outside of the V-shaped configuration until it is partially located outside a side extension line of the mounting portion.

Abstract: A rotating electric machine includes a field system and an armature. The field system includes a magnet section having a plurality of magnetic poles whose polarities alternate in a circumferential direction. The armature includes a multi-phase armature coil. Either of the field system and the armature is configured as a rotor. The magnet section is configured to have an easy axis of magnetization oriented such that the closer the position to a d-axis in the circumferential direction, the more the direction of the easy axis of magnetization becomes parallel to the d-axis.

Abstract: Disclosed are a magnetic bearing, a compressor and an air conditioner. The magnetic bearing includes a radial stator, wherein the radial stator has a plurality of stator teeth extending inwardly in a radial direction thereof; two axial stators are arranged on two axial sides of the stator teeth, respectively; and radial control coils are wound on the stator teeth, each radial control coil being located outside an area of the stator teeth covered oppositely by the two axial stators. The magnetic bearing, the compressor and the air conditioner can effectively reduce the degree of coupling between a radial electromagnetic control magnetic circuit and an axial electromagnetic control magnetic circuit, and reduce the control difficulty of the magnetic bearing.

Abstract: A rotor includes a core and two or more ribs. The core has a through hole group that includes three or more through holes arranged in a circumferential direction. The through hole group is formed through a predetermined magnetic pole. The two or more ribs are configured as portions of the core, with each rib being interposed between adjacent through holes. A first of the ribs has a first inclination with respect to a magnetic pole centerline. A second of the ribs has a second inclination with respect to the magnetic pole centerline. The second inclination is larger than the first inclination. The magnetic pole centerline is a straight line that passes through a radial center line of the magnetic pole and an axial center of the rotor. The first rib is narrower than the second rib.

Abstract: A flux machine has plural coil assemblies and plural magnet sets arranged in mutual close proximity and circularly about a central axis. Either one of the coil assemblies and the magnet sets are supported by at least one axle which is aligned with the central axis, and either one of the coil assemblies and magnet sets executes rotary motion about the central axis when electrical current is present in the coil assemblies. Magnetic flux of the magnet sets is directed axially and radially while machine rotation is orthogonal to the direction of flux. A plurality of magnets in each magnet set are supported by one or another of a plurality of coaxially aligned axles so that the flux machine may operate as an electrical motor, as an electrical generator, or both at the same time.

Abstract: A DC electric motor having a stator mounted to a substrate, the stator having a coil assembly having a magnetic core, a rotor mounted to the stator with a first set of permanent magnets distributed radially about the rotor to facilitate rotation of the rotor and a second set of permanent magnets on the rotor to facilitate determination of an absolute position of the rotor. The motor further includes first and second set of sensors for detection of the magnets of the inner and outer rings. During operation of the motor passage of the permanent magnets over the sensors produces a substantially sinusoidal signal of varying voltage substantially without noise and/or saturation, allowing an absolute position of the rotor relative the substrate to be determined from the sinusoidal signals without requiring use of an encoder or position sensors and without requiring noise-reduction or filtering of the signal.

Abstract: An eddy current probe based on a Halbach array coil includes a first coil, a second coil, a third coil, a fourth coil and a fifth coil arranged in a form of a Halbach array. One side with dense magnetic induction lines is used as a displacement measurement direction of the eddy current probe.

Abstract: A motor includes a rotor magnet, a stator, and a magnetic sensor. The rotor magnet includes magnetized portions in a Halbach array, and having radially magnetized portions whose magnetization direction is a radial direction and non-radially magnetized portions. In first and second radially magnetized portions, magnetic poles on both sides in the radial direction are arranged opposite to magnetic poles on both sides in the radial direction of the first radially magnetized portion. The first and second radially magnetized portions are alternately arranged along a circumferential direction with at least one non-radially magnetized portion therebetween. The magnetic sensor is located on the other side in the radial direction with respect to the rotor magnet. A non-magnetized portion is in an axial portion of the rotor magnet where a magnetic field is detected by the magnetic sensor, and located between the first and second radially magnetized portions in the circumferential direction.

Abstract: A rotor assembly for an axial flux machine may include at least one magnet and first and second support structures. The first support structure may be configured to have the at least one magnet attached thereto and to provide a flux return path for the at least one magnet. The second support structure may be configured to be attached to the first support structure so as to allow torque to be transferred between the at least one magnet and the second support structure via the first support structure, and may be further configured (A) to be attached to a rotatable shaft of the axial flux machine, or (B) to function as an output or input flange of the axial flux machine.

Abstract: A motor rotor structure including a rotor core. Multiple first permanent magnet slots are disposed in the rotor core in a circumferential direction. At least one second permanent magnet slot is disposed between every two adjacent first permanent magnet slots; each of the first permanent magnet slots and an adjacent second permanent magnet slot thereof are spaced a preset distance apart. Between two kinds of permanent magnets having different coercivities, a first kind of permanent magnet is mounted in each of the first permanent magnet slots and a second kind of permanent magnet is mounted in the second permanent magnet slot. When identical polarities of adjacent two kinds of permanent magnets having different coercivities face each other, the rotor core is in a more-magnetic-pole state. When contrary polarities of adjacent two kinds of permanent magnets having different coercivities face each other, the rotor core is in a fewer-magnetic-pole state.

Abstract: Systems, methods, and computer-readable media for driving polyphase motors are provided. A system is provided that may include an inverter with more than three phases, a stator with more than three phases, and a rotor with a number of poles. The geometry, construction, magnet flux distribution, and/or reluctance distribution can be varied between rotor poles. A method is provided that may control a system by selectively activating inverter half-bridges or other suitable inverter components, and energizing stator coils with different amplitude, which may result in non-repeating stator combined magnetic flux distribution, which may electromagnetically couple and produce torque on individual rotor poles, such as based on a pre-determined efficiency map.

Abstract: A motor and a rotor structure thereof are disclosed. The rotor structure includes a rotor core. The rotor core has a plurality of magnetic member units arranged around a periphery of the rotor core. Each magnetic member unit includes two first magnetic members and a second magnetic member. The two first magnetic members are obliquely arranged in a V shape relative to a center of the rotor core. The second magnetic member extends transversely between the two first magnetic members. Each first magnetic member has at least two permanent magnets that are arranged obliquely. The motor further includes a stator core covering the rotor core. The stator core has a plurality of stator windings arranged annularly. The stator windings correspond to the magnetic member units. The rotor structure has high structural strength, and the phenomenon of stress concentration is less obvious when the motor is running.

Abstract: A rotor structure of a synchronous motor includes: a stator; and a rotatable rotor on the inner side of the stator, in which the rotor includes: a rotor core fixed to a rotary shaft; and a permanent magnet on the outer side of the rotor core, the permanent magnet on the outer side of the rotor core includes a main magnet and an auxiliary magnet, the auxiliary magnet is provided in contact with the outer side of the rotor core, and the main magnet is provided in contact with the outer side of the auxiliary magnet.

Abstract: An application step of applying an adhesive agent to an application area of a surface of a sintered R-T-B based magnet work, an adhesion step of allowing a particle size-adjusted powder that is composed of a powder of an alloy or a compound of a Pr—Ga alloy which is at least one of Dy and Tb to the application area of the surface of the sintered R-T-B based magnet work, and a diffusing step of heating it at a temperature which is equal to or lower than a sintering temperature of the sintered R-T-B based magnet work to allow the Pr—Ga alloy contained in the particle size-adjusted powder to diffuse from the surface into the interior of the sintered R-T-B based magnet work are included.

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: A field magnet manufacturing method where a bonded magnet's inner surface press-fitted in a yoke has a certain accuracy irrespective of the accuracy of the yoke's outer circumferential surface. A cylindrical bonded magnet from binding magnet particles with a thermosetting resin is fixed in a tubular yoke of magnetic material. The method includes reheating and softening the bonded magnet after thermal curing; and press-fitting in the bonded magnet after the softening step from a tapered portion on one end side of the yoke to press the bonded magnet's outer circumferential surface against the yoke's inner surface. The press-fitting includes feeding the bonded magnet relatively into the yoke while allowing a relative posture variation between the bonded magnet and the yoke so the bonded magnet's inner surface to be remolded into a shape along the inner surface of the yoke exhibits almost the same accuracy as the yoke's inner surface.

Abstract: A rotating electrical machine capable of obtaining a higher torque while minimizing the amount of permanent magnets used. A rotor core includes a plurality of first insertion holes each having an auxiliary magnet embedded therein, the auxiliary magnet being embedded so as to surround a rotation axis of a rotor in a cross-section orthogonal to the rotation axis. The rotor core includes a plurality of second insertion holes each having a main magnet embedded therein, the main magnet being embedded so as to extend from the auxiliary magnet toward an outer circumferential direction of the rotor. The rotor includes a plurality of magnetic poles formed around the rotation axis, the magnetic poles each having the auxiliary magnet and the plurality of main magnets. The auxiliary magnet is arranged disproportionately on one side of the first insertion hole in the circumferential direction of the rotor so as to form a clearance on the other side of the first insertion hole.

Abstract: A motor and a coreless stator coil winding unit thereof are disclosed. The coreless stator coil winding unit includes an overlapping coil winding assembly and a non-overlapping coil winding assembly. The overlapping coil winding assembly includes a plurality of first coils arranged annularly and a plurality of second coils arranged annularly. The first coils and the second coils overlap with a phase difference. The non-overlapping coil winding assembly includes a plurality of third coils arranged annularly. The third coils are each located between an adjacent one of the first coils and an adjacent one of the second coils. Thus, the back electromotive force constant and torque constant of the motor have a better performance.

Abstract: The present invention relates to an electromechanical battery comprising a single pole-pair Halbach array of permanent magnets incorporated into an annular flywheel, which together comprise a rotor assembly, a means for levitating the rotor assembly using a “double-lift” attractive magnetic levitator under active control, and a means for actively stabilizing the spinning rotor assembly by interaction with the fringe fields of the Halbach array.

Abstract: An assembly process of a Halbach magnetic ring component, including an adsorbing each magnetic shoe on the outer surface of a positioning cylinder; sleeving the sleeve on the outer surface of a circular ring; moving the sleeve downwards so that the upper part of each magnetic shoe is exposed; performing first dispensing on the exposed part of the upper part of each magnetic shoe; sleeving the aluminum ring on the outer surface of the exposed part of the upper part of each magnetic shoe, so that the aluminum ring covers the first dispensing area of each magnetic shoe; moving the sleeve downwards until the sleeve is completely separated from the magnetic shoe, and performing second dispensing on the lower region of each magnetic shoe; moving the aluminum ring downwards until the aluminum ring is completely sleeved on the outer surface of each magnetic shoe.

Abstract: In one aspect, an electrically-powered wheel assembly for a work vehicle may include an axle and a wheel configured to rotate relative to the axle. The wheel may, in turn, be positioned outward from the axle in a radial direction such that a wheel cavity is defined between the wheel and the axle in the radial direction. The wheel assembly may also include a first electric motor configured to rotationally drive the wheel relative to the axle, with the first electric motor positioned within the wheel cavity and configured to receive electric power from a power source. Furthermore, the wheel assembly may include a second electric motor positioned within the wheel cavity and configured to rotationally drive the wheel relative to the axle, with the second electric motor configured to receive electric power through the first electric motor.

Abstract: An electric fluid pump for a motor vehicle includes an electric drive motor which is brushless and electronically commutated. The electric drive motor includes a permanent-magnetic motor rotor having a motor shaft and at least two rotor poles, each of the at least two rotor poles having one permanent magnet embedded therein, a plurality of stator-side magnetic coils, at least two sensor magnets each emitting an axial magnetic field and each having polarities, and at least one Hall sensor which is arranged to lie eccentrically in a transverse plane so that the at least one Hall sensor detects the axial magnetic fields of the at least two sensor magnets. The at least two sensor magnets are magnetized diametrically. The at least one Hall sensor is arranged to detect the polarities of each of the at least two sensor magnets during one revolution of the permanent-magnetic motor rotor.

Abstract: The disclosure relates to a brushless and magnet-free synchronous electrical machine, wherein it comprises a stator (20) comprising a ring (22), a winding (28) and a tooth system (24) comprising teeth (26) extending parallel to the axis of rotation from the ring (22), said winding being wound around the tooth system (24), a rotor (10), comprising a first portion (12a) extending in p preferred directions (18a), a second portion (12b) extending in p preferred directions (18b) shifted by p with respect to the preferred directions of the first portion (18a), and an intermediate portion (14) linking the first portion (12a) to the second portion (12b), and a coil (40) for exciting the rotor, fixed with respect to the stator, supplied with a DC electric current, positioned around the intermediate portion (14) of the rotor and configured so as to generate an electric flux in the rotor (10) through magnetic induction.

Abstract: A rotor includes a shaft, a rotor core, magnets on a radial outside surface of the rotor core, and sheet-shaped magnetic portions provided on radial outside surfaces of some of the magnets. The magnets include first magnets in which the magnetic portions are on a circumferential portion in a radial outside surface of the first magnets and second magnets in which the magnetic portions are not on a radial outside surface of the second magnets. The first magnets and the second magnets are alternately arranged in the circumferential direction in each of a first portion and a second portion along the axial direction in the radial outside surface of the rotor core. The first magnets of the first portion and the second magnets of the second portion overlap each other, and the second magnets of the first portion and the first magnets of the second portion overlap each other.

Abstract: An integrated electric propulsion assembly includes a stator including at least a first magnetic element generating first magnetic field. The assembly includes a propulsor with an integrated rotor, the propulsor further including a hub rotatably mounted to the stator and at least a second magnetic element affixed to the hub, the at least a second magnetic element generating a second magnetic field. At least one of the first magnetic field and the second magnetic field varies with respect to time, wherein the varied magnetic field includes generating a magnetic force between the at least a first magnetic element and the at least a second magnetic element, and the magnetic force causes the hub to rotate with respect to the stator.

Abstract: It is described an electric machine with permanent magnets, which can function as a high torque and power per mass motor or generator. The machine includes a rotor and a stator. The rotor and the stator have spiral shape, the stator is located inside the rotor. The rotor contains at least two permanent magnets of different polarity, forming spirals around the stator. The stator contains a ferromagnetic core, on which the three-phase winding is spirally wound. This construction allows almost the entire winding to participate in torque generation. The cooling with a fluid medium inside the magnet core allows to remove heating from the entire length of the winding, which significantly increases the operating efficiency.

Abstract: A rotating electrical machine capable of obtaining a higher torque while limiting the amount of permanent magnets used. A magnetic pole of a rotor includes an auxiliary magnet embedded in a rotor core and at least one main magnet arranged on an outer circumferential side than the auxiliary magnet of the rotor. In each magnetic pole, the distance from an end of the main magnet, the end facing the auxiliary magnet, to the auxiliary magnet facing the main magnet is shorter than the length of the main magnet in the radial direction. In a cross-section orthogonal to the rotation axis of the rotating electrical machine, the main magnets of each magnetic pole are arranged so as to be asymmetrical about a virtual line passing the rotation axis and axisymmetrically dividing the auxiliary magnet.

Abstract: A motor includes a stator and a rotor rotatably coupled to a rotation shaft. The rotor includes: rotor core segments arranged along a circumferential direction of the rotor on the inner side or the outer side of the stator and spaced apart from one another to define permanent magnet arrangement slots between the rotor core segments; permanent magnets inserted into the permanent magnet arrangement slots, respectively; and a rotor frame including rotor frame pins that fix each of the permanent magnets between the rotor core segments. Each of the rotor core segments defines a rotor core hole that extends parallel to an axial direction of the rotation shaft.

Abstract: The disclosure relates to a high-speed electric machine, having a speed higher than 20,000 rpm, including a rotor having 1 or 2 pairs of magnetized poles, and an enhanced stator which has an outer diameter that is larger than 18 millimeters and which has 3 or 6 straight teeth extending radially and borne by a one-piece peripheral annular collar. At least a portion of the teeth bear coils, and the teeth are rigidly connected to one another and together form a one-piece planar assembly. The coiled teeth have a rectangular cross-section of width I and of length L, with formula (I).

Abstract: The present disclosure discloses a motor rotor and a permanent magnet motor. The motor rotor includes a rotor core and a plurality of magnetic poles in the rotor core. The magnetic pole includes a first, a second, and a third permanent magnets, and the size relationship of the first, the second and the third permanent magnets in the cross section of the rotor core meets m/2>H1*Hcj1*L1/[(H2*Hcj2*L2+½H3*Hcj2*L3)]>m/10, wherein m is a multiple of the motor flux adjustment range; L1 is the length of the first permanent magnet; H1 is the width of the first permanent magnet; Hcj1 is the intrinsic coercivity of the first permanent magnet; L2, H2 and Hcj2 are the length, the width and the intrinsic coercivity of the second permanent magnet, respectively; L3 H3, Hcj3 are the length, the width, and the intrinsic coercivity of the third permanent magnet, respectively.

Abstract: A decelerating apparatus includes a brake member, primary and secondary permanent magnets and pole pieces. The primary permanent magnets are arranged in a circumferential direction to face an inner or outer peripheral surface of the brake member with a gap in between. Each of the primary permanent magnets has two opposite magnetic poles arranged in a radial direction. The secondary permanent magnets and the pole pieces are placed in the gap and arranged in the circumferential direction. Each of the secondary permanent magnets has two opposite magnetic poles arranged in the circumferential direction. Each of the pole pieces is positioned between adjacent secondary permanent magnets. Magnetic pole arrangements of adjacent primary permanent magnets are opposite to each other. Magnetic pole arrangements of adjacent secondary permanent magnets are opposite to each other. Each of the secondary permanent magnets has a trapezoidal cross-sectional shape including an upper base and a lower base.

Abstract: A permanent magnet electric machine (PM machine) includes a rotor with rotatable magnets and a stator defining an air gap with the rotor. An actuator rotates the rotatable magnets at predetermined operating points through an angular distance sufficient for changing magnetic pole orientations of the rotatable magnets, and thus modifies magnetic flux linkage with stator windings across the air gap. Fixed magnets may be arranged around a circumference of the rotor. The actuator may be actively or passively driven. Flux-shunting elements are optionally disposed in the rotor to further modify the flux linkage. A gear set connected to torque transfer elements may be driven by the actuator to rotate the rotatable magnets. A vehicle includes drive wheels, a transmission, and the PM machine. A method controls magnetic flux linkage in the PM machine noted above.

Abstract: A permanent magnet machine includes a rotor and an irregular polyhedron shaped magnet assembly. The rotor may define at least one magnet opening and may be configured to rotate within a circular opening defined by a stator. The irregular polyhedron shaped magnet assembly may be disposed in the magnet opening and may define a magnetization direction, wherein a height along the magnetization direction and perpendicular with a lamination plane of the rotor is greater at both ends than at a central portion disposed therebetween.

Abstract: A rotor is located around an outer periphery of a rotation shaft of a motor and rotates together with the rotation shaft. The rotor includes magnetic steel plates laminated in an axial direction and including a through-hole group passing therethrough in the axial direction. The through-hole group includes through-holes each including, as a central line, an imaginary line extending in the radial direction and having an arcuate shape extending from the central line to both sides and radially outward. The through-holes are arranged in the radial direction. Among the through-holes, a radius of curvature of an arcuate radially inner side surface of the radially innermost through-hole is the smallest, and/or a radius of curvature of an arcuate radially outer side surface of the radially outermost through-hole is the largest.

Abstract: A rotor assembly for an axial flux machine may include at least one magnet and first and second support structures. The first support structure may be configured to have the at least one magnet attached thereto and to provide a flux return path for the at least one magnet. The second support structure may be configured to be attached to the first support structure so as to allow torque to be transferred between the at least one magnet and the second support structure via the first support structure, and may be further configured (A) to be attached to a rotatable shaft of the axial flux machine, or (B) to function as an output or input flange of the axial flux machine.

Abstract: A rotary electric machine system includes a rotary electric machine unit, a temperature adjustment unit, and a control unit. The rotary electric machine unit includes a rotary electric machine and a temperature detection unit. The rotary electric machine includes a stator core around which a coil is wound, and a rotor having a magnet. The temperature adjustment unit increases the temperature of the stator core. When a rotational speed of the rotary electric machine is in a predetermined high-speed rotation state, in a case in which the temperature detected by the temperature detection unit is less than a predetermined value, the control unit controls the temperature control unit to increase the temperature of the rotary electric machine.

Abstract: A stator is provided. In this stator, a stator core comprises: an outer peripheral ring part formed in a ring shape; and multiple salient pole parts protruded from the outer peripheral ring part to an inner side in a radial direction of the stator. The outer peripheral ring part comprises outer peripheral parts in a same number as multiple salient pole parts. When an outer side face of the outer peripheral part in the radial direction is an outer peripheral face, both end side portions in the circumferential direction of the outer peripheral face of one of the outer peripheral parts are respectively formed to be a curved face part in a convex curved face shape which is a circular arc shape, curvature radii of the circular arc shapes are equal to each other and their curvature centers are common when viewed in an axial direction of the stator.

Abstract: Disclosed herein are a rotor and a method of manufacturing the rotor. The rotor includes a rotor assembly including magnets and rotor cores, and a molding unit including a first molding unit disposed by being firstly injection molded to support the rotor assembly before the magnets are magnetized and a second molding unit disposed by being secondly injection molded to support the rotor assembly after the magnets are magnetized.

Abstract: A magnet for an IPM rotor is inserted into a rotor core in an inserting direction along an axial direction thereof and buried in the rotor core in a circumferential direction thereof. The magnet for an IPM rotor is formed such that a shape thereof is a parallelogram having opposing sides when seen in a plan view from the inserting direction.

Abstract: A dynamoelectric machine having mechanical field weakening is provided. A design that is advantageous in terms of efficiency is brought about by a machine having a stator (1), a rotor (2) that is spaced from the stator (1) by an air gap (8), permanent magnets (4) for generating an exciter field in the air gap (8), which permanent magnets are arranged in magnet pockets (3) on the rotor (2), and displaceable flux-guiding elements (10) guided in radially extending grooves (12), wherein the density of the exciter field in the air gap (8) can be influenced by the radial position of the flux-guiding elements, and wherein the leakage flux-guiding elements (10) are arranged underneath the permanent magnets (4) when viewed in a radial direction.

Abstract: This invention provides for a rare-earth permanent magnet-forming sintered body having an integral sintered structure of magnet material particles containing a rare-earth substance. The integral sintered structure is formed in a three-dimensional shape having: a cross-section with a shape defined by a radially outer-side arc-shaped surface having a first curvature radius, a radially inner-side arc-shaped surface having a second curvature radius less than the first curvature radius and having an arc shape concentric with the outer-side arc-shaped surface; and a first end face and a second end face each of which is a radially-extending face along a virtual radial line extending from a curvature center of the arc shapes; and an axial length extending in a direction perpendicular to the cross-section.

Abstract: A method for torque compensation of a motor associated with a medical instrument includes determining a torque profile for a motor, the torque profile defining torque output as a function of rotor angle and during operation of the motor, compensating for deviations in the torque profile by adjusting an input signal to the motor, the compensating being based on the torque profile and rotor position.

Abstract: In some embodiments, a camera includes a lens assembly in a lens carrier, an image sensor for capturing a digital representation of light transiting the lens, and a voice coil motor. In some embodiments, the voice coil motor includes a spring suspension assembly for moveably mounting the lens carrier to an actuator base, a plurality of permanent magnets mounted to the actuator base through a magnet holder assembly and a focusing coil fixedly mounted to the lens carrier and mounted to the actuator base through the suspension assembly. In some embodiments, the permanent magnets each generate a magnetic field of a respective permanent magnet field strength, and the magnet holder assembly generates a holder magnetic field of a holder magnetic field strength.

Abstract: A portable apparatus is disclosed for generating electrical power comprising a stator comprising a plurality of coils, coil units or coil segments for independently generating electrical power, wherein the stator comprises a printed coil laminate comprising a sheet of insulator material and a printed conductor comprising conductive ink printed upon the sheet of insulator material arranged to form the plurality of coils, coil units or coil segments and a reciprocator comprising a magnet, the reciprocator being responsive to vibrations and/or shocks and moves in that regard within the environs of the stator so as to generate electrical power. The apparatus is connectable to a portable electronic device so as to power that device and/or to a storage device for storing the generated electrical power.

Abstract: An electric machine having a rotor is disclosed. The rotor defines a cavity containing a magnet, an outer periphery, and a top bridge therebetween that includes at least two slots each having a length in a radial direction. A maximum of the lengths is closest to a Q-axis and a minimum of the lengths is closest to a D-axis. As the electric machine is operating, a rate of change in airgap flux density through the top bridge differs.

Abstract: An apparatus is provided which comprises: a chassis compartment having a bottom surface and walls orthogonal to the bottom, wherein the chassis compartment comprises: a rectangular opening, which may be designed to accept a microelectromechanical (MEMS) device and four slots, which may be designed to accept one or more magnet(s), extending outwardly from the rectangular opening, wherein each of the slots comprises: an inner opening having a length coextensive with a side of the rectangular opening, and an outer opening having corresponding ends that extend a length of the outer opening beyond the length of the inner opening. Other embodiments are also disclosed and claimed.

Abstract: An oblique motor of a vehicle including an engine and a transmission includes a stator having a diameter formed to be smaller toward the engine; a rotor disposed inside the stator and having a diameter formed to be smaller toward the engine; a cooling member fixed to the stator and configured to cool heat generated from the stator; and a housing enclosing the cooling member and fixedly installed between the engine and the transmission.

Abstract: To reduce eddy current loss in a supporting member of a rotor of an axial gap motor, and improve efficiency, the motor includes a rotor, and stators arranged opposite to the rotor. The rotor has a disc-shaped supporting member, having a plurality of mounting holes in each of which a permanent magnet segment is installed. In the stators, a plurality of field windings is arranged for generating a rotating magnetic field. The axial gap motor is provided with notches extending radially between each of the mounting holes of the supporting member in which a permanent magnet segment is fitted, and an outer peripheral edge of the supporting member.

Abstract: A rotor element configured for movement relative to a stator includes a backing member formed, at least in part, from a ferromagnetic material; a first magnetic pole having a first polarity; and a second magnetic pole having a second polarity, opposite the first polarity. The first magnetic pole and the second magnetic pole are coupled to a first surface of the backing member such that the second magnetic pole is disposed, relative to the first magnetic pole, at a distance defined in a direction of a width of the backing member. A thickness of the backing member is varied along the width of the backing member to form a plurality of alternating first portions and second portions. The first portions include protrusions extending from a second surface of the backing member, opposite the first surface, such that the first portions are thicker than the second portions.