Abstract: An interior permanent magnet machine including a rotor stack defining at least two adjacent magnet retention slots and a plurality of permanent magnets positioned within the interior of the rotor, wherein the radial thickness of the rotor that is above a given magnet retention slot transitions from a first radial thickness to a bridge region having a second radial thickness that is less than the first radial thickness. The bridge region is positioned between the two magnet retention slots and the transition to the bridge region occurs within an area falling within a defined angular expanse.

Abstract: The invention refers to magnetoelectric machines and comprises a rotor made in the form of at least two disks, the magnetized disks have circumferential arrayed like poles and an axially magnetized polygon or cylindrical magnet placed between the disks. The stator comprises a winding selected from the group consisting of a coil winding and a wave winding coils that are distributed over the circumference and are installed predominantly in the space between the rotor poles provides for the possibility of the end face interaction with the rotor poles. Each of at least two disks could be made of a non-ferrous material with embedded magnets, and rotor further comprises ferrous metal plates, each of the plates is attached on an outer surface of each disk and comprises a ferrous metal cylinder for interconnecting a magnetic flux between ferrous metal plates. The rotor could be made as a multi-sectional unit. The disks could be made integral with a magnet in such a manner that they serve as magnet's poles.

Abstract: An electrical machine comprises a combined magnetic gearbox and electrical generator. A first set of permanent magnets (30) are arranged on a rotor (16) to produce a spatially variable first magnetic field. A second set of permanent magnets (32) are arranged on a rotor (40, 41, 43), stationary pole pieces (36) are positioned between the first set of permanent magnets (30) and the second set of permanent magnets (32) to interfere with the first magnetic field. Rotation of the rotor (16) relative to the pole pieces (36) produces a second magnetic field which rotates the second set of permanent magnets (32). A stator (42) has windings (46) to transduce a changing second magnetic field produced by the rotation of the second set of permanent magnets (32) into an electrical voltage. The electrical machine is useful for a wind turbine generator. Alternatively the arrangement may be modified to produce an electrical motor.

Abstract: An axial-gap motor comprising a base, a shaft, a stator frame, a plurality of electromagnet units, bearings, a rotor frame, and a plurality of permanent magnet units, an rotary encoder, and a drive unit. The rotor frame is spaced from the stator frame by a predetermined distance. The permanent magnet units oppose the electromagnet units across a predetermined axial gap. From the output of the rotary encoder, the drive unit supplies an excitation current to the electromagnet units, causing the magnetic poles of the units to repulse those of the permanent magnet units. The magnetic-field centerline that passes the center of each electromagnet unit intersects, at a predetermined angle, with the magnetic-field centerline that passes the center of one permanent magnet unit.

Abstract: A flat rotary electric machine to be mounted in a vehicle engine includes an annular stator core with a plurality of teeth and an armature winding and a field unit including a gutter-like field core having a pair of coaxial cylindrical core members. A plurality of permanent magnets are disposed on the cylindrical core members and an annular field coil disposed between the cylindrical core members. Each of the cylindrical core members has a plurality of magnet-conductive salient magnetic poles disposed between the permanent magnets, the permanent magnets are magnetized so that all the magnetic flux thereof can cross the stator through the teeth in the same direction.

Abstract: An electric rotating machine including a casing, two disk-shaped rotors arranged in concentric relation to each other within the casing, and a stator disposed concentrically with the rotors within the casing. The rotors include magnets, respectively. The magnet of one of the rotors and the magnet of the other of the rotors are disposed radially offset from each other. The stator includes a radially outer portion axially opposed to the magnet of one of the rotors and a radially inner portion axially opposed to the magnet of the other of the rotors.

Abstract: An AC motor-generator includes a rotor made up of a first inductor core and a second inductor core arrayed in an axial direction of a rotary shaft. A plurality of permanent magnets are arrayed at an interval of 2&pgr; in electrical angle of an armature away from each other in the periphery of each of the first and second inductor cores. Each permanent magnet is magnetized in a radius direction of the first and second inductor cores so as to be opposed to a magnetomotive force produced by a field winding, thereby resulting in quick disappearance of the magnetic flux of the field upon disappearance of the magnetomotive force from the field winding.

Abstract: An electrical machine comprises a magnetically permeable ring-shaped core centered on an axis of rotation and having two axially-opposite sides. Coils are wound toroidally about the core and disposed sequentially along the circumferential direction. Each coil includes two side legs extending radially alongside respectively sides of the core. Coil-free spaces exist between adjacent side legs. A bracket has first and second side flanges that are connected by a bridging structure and respectively abut the first and second sides of the coil.

Abstract: An electric motor utilizing permanent magnets, wherein the permanent magnets produce a flux circuit in a first direction and shunt elements whereby the magnets and shunt elements rotate relative to each other wherein the shunt elements sequentially interrupt the magnet flux circuit to minimize generated flux circuits tending to rotate the motor in a direction opposite to the primary direction of motor rotation.

Abstract: A motor for incorporation in an actuator pivot includes a coil disk, an upper magnet-yoke disk, and a lower magnet-yoke disk. The coil disk is attached to the pivot shaft to form a shaft-coil assembly. The coil disk includes a plurality of coils, each placed orthogonally to the axis of the shaft. Each coil is configured to receive an electrical current in a first direction. A second coil located diametrically opposite to the first coil is configured to receive a second electrical current in a second direction so that the coils generate a torque with a net resultant linear force being substantially equal to zero. The first magnet-yoke disk, for mounting relative to the shaft at a location above the coil disk so that the first magnet-yoke disk rotates with respect to the coil disk, the magnet-yoke ring comprising at least one magnet, aligned in a first direction, and a respective plurality of yokes, each yoke for holding at least one magnet such that magnetic lines of flux are generated parallel to the axis.

Abstract: A heat-dissipating module includes a lower housing, a first magnet portion, a second magnet portion and a circuit board. The lower housing is made of a highly thermal conductive material. The upper housing has an opening in the center thereof, wherein when the upper housing and the lower housing are jointed together, an outlet is defined. The first magnet portion includes a plurality of first magnets. The second magnet portion has a plurality of second magnets, wherein a permanent magnetic field is formed between the plurality of first magnets and the plurality of second magnets. The circuit board is disposed between the first magnet portion and the second magnet portion and having a plurality of winding coils, wherein when a current is applied to the plurality of winding coils, the permanent magnetic field is repulsed to rotate the blade portion, and an ambient air flow is inhaled from the opening and exhaled via the outlet.

Abstract: A slow moving electrical machine includes an annular set of windings on iron cores of laminated sheets or pressed iron powder, and a corresponding annular set of permanent magnets, the windings being concentrated, and the iron cores having windings being arranged alternatingly with iron cores without windings. The machine has a number of grooves between the cores which is different from a number of poles of the permanent magnets, the number of grooves s and the number of poles p being defined by |s−p|=2*m and s=12*n*m, where n and m are natural numbers. The machine is constructed and arranged for three phase operation, with serial connection of adjacent windings within a group, with 2*m groups of windings per phase, and with serial or parallel connection of groups of windings.

Abstract: A rotary electric machine for a hybrid vehicle includes a rotor connected between a vehicle engine and a torque transmission mechanism at the back of the vehicle engine and a stator. The rotor includes an outer rotor portion having an inner surface electro-magnetically connected to the outer surface of the stator, an inner rotor portion having an outer surface electro-magnetically connected to the inner surface of the stator. The stator includes a stator core disposed between the inner rotor portion and the outer rotor portion and a multi-phase winding wound on the stator to be electro-magnetically connected with both the outer and inner rotor portions.

Abstract: A single-stator-double-rotor rotating motor has one upper-layer rotor, one intermediate-layer armature and one lower-layer rotor. The upper-layer rotor and lower-layer rotor are embedded with the same number of magnets to form a magneto type magnetic pole, stator electrodes of the same number as the number of magnets are disposed on the intermediate-layer armature to form an electro type magnetic pole. A skew symmetry exists between an upper-layer rotor and a corresponding lower-layer rotor, and the upper-layer rotor and the lower-layer rotor are rotated in opposite directions by commutation of the current flowing through exciting coils of the stator electrodes every T/N of time, wherein T is a rotation period of the upper-layer rotor, and N is the number of the magnets.

Abstract: An axial flux machine includes a rotatable shaft; at least one rotor disk coupled to the rotatable shaft; at least one permanent magnet supported by the at least one rotor disk; at least one stator extension positioned in parallel with the at least one rotor disk; at least two molded iron pole elements attached to the at least one stator extension and facing the at least one permanent magnet; and at least two electrical coils, each wrapped around a respective one of the at least two molded iron pole elements.

Abstract: A bi-directional latching actuator is comprised of an output shaft with one or more rotors fixedly mounted thereon. The shaft and rotor are mounted for rotation in a magnetically conductive housing having a cylindrical coil mounted therein and is closed by conductive end caps. The end caps have stator pole pieces mounted thereon. In one embodiment, the rotor has at least two oppositely magnetized permanent magnets which are asymmetrically mounted, i.e., they are adjacent at one side and separated by a non-magnetic void on the other side. The stator pole piece has asymmetric flux conductivity and in one embodiment is axially thicker than the remaining portion of the pole piece. An abutment prevents the rotor from swinging to the neutral position (where the rotor magnets are axially aligned with the higher conductivity portion of the pole piece). Thus, the rotor is magnetically latched in one of two positions being drawn towards the neutral position.