Abstract: An axial gap rotary electric machine includes a rotor, an armature and a stator. The rotor is capable of rotating in a circumferential direction about a rotation axis. The rotor includes permanent magnets and magnetic plates which cover those from the armature side. The armature includes an armature coil opposed to the rotor from one side in a rotation axis direction parallel to the rotation axis. The stator is opposed to the rotor from the other side in the rotation axis direction.

Abstract: Embodiments of the invention provide for conical magnets for rotors in electrodynamic machines, methods to design the same, and rotor-stator structures for electrodynamic machines. In various embodiments, a rotor-stator structure for electrodynamic machine can include field pole members and conical magnets. According to at least some embodiments, one or more of the conical magnets can include a magnetic region configured to confront one or more air gaps. The magnetic region can be substantially coextensive with one or more acute angles to the axis of rotation. The magnetic region can also include a surface positioned at multiple radial distances from the axis of rotation in a plane perpendicular to the axis of rotation.

Abstract: The brushless electric machine includes a first drive member (30U) having a plurality of permanent magnets (32U); a second drive member (10) having a plurality of electromagnetic coils and capable of movement relative to the first drive member (30U); and a third drive member (30L) disposed at the opposite side from the first drive member (30U) with the second drive member (10) therebetween. The second drive member (10) has magnetic sensors (40A, 40B) for detecting the relative position of the first and second drive members. The third drive member (30L) has at locations facing the permanent magnets of the first drive member (30U) a plurality of magnetic field strengthening members (32L) for strengthening the magnetic field at the location of the second drive member (10) in conjunction with the permanent magnets.

Abstract: A permanent magnet power generator which, when used at an electric power generating facility such as a wind power plant, etc., would not be bulky and would not impede wind capture by a wind turbine; instead, it can raise the generated voltage without impeding wind capture has a generator shaft; at least three rotors, which are secured with the generator shaft, constituted by a plurality of plate-shaped structures having a permanent magnet attached thereto, and each disposed in the longitudinal direction of the generator shaft; and a stator, which is plate-shaped with a stator coil disposed in at least two gaps formed by the rotors, evenly-spaced apart from the generator shaft. The rotors and stators are disposed alternately in the longitudinal direction of the generator shaft, with a total of at least five stages. Also a wind power generator with a propeller on the shaft of this permanent magnet generator.

Abstract: Apparatus and method for tuning the magnetic field of brushless motors and alternators to obtain efficient operation over a broad RPM range. The motor or alternator includes fixed windings (or stator) around a rotating rotor carrying permanent magnets. The permanent magnets are cylindrical and have North (N) and South (S) poles formed longitudinally in the cylindrical magnets. The magnets reside in magnetic conducing pole pieces (for example, low carbon or soft steel, and/or laminated insulated layers, of non-magnetizable material). Rotating the cylindrical permanent magnets inside the pole pieces either strengthens or weakens the resulting magnetic field to adjust the motor or alternator for low RPM torque or for efficient high RPM efficiency. Varying the rotor magnetic field adjusts the voltage output of the alternators allowing, for example, a windmill generator, to maintain a fixed voltage output. Other material used in the rotor is generally non-magnetic, for example, stainless steel.

Abstract: An electric machine (10; 100) comprises a rotor (14) having permanent magnets (24) and a stator (12) having coils (22) wound on stator bars (16) for interaction with the magnets across an air gap (26a, b) defined between them. The rotor has two stages (14a, b) arranged one at either end of the bars. The bars have a shoe (18a, 8) at each end of each bar that links magnetic flux through the bars with said magnets on each stage. Adjacent shoes facing the same stage of the rotor have a high-reluctance shoe gap (27) between them; adjacent magnets on each stage of the rotor have a high-reluctance magnet gap (25) between them; and the shoe and magnet gaps (25, 27) are angled with respect to each other such that they engage progressively as the rotor rotates. Alternatively, the shoes facing each stage are in a ring of connected shoes such that the magnets experience a continuous reluctance that is at least 90% constant as a function of rotor position.

Abstract: The present disclosure relates generally to a permanent magnet, brushless motor comprising a primary rotor having alternating magnetic poles around a circumference, a secondary rotor similar to the primary rotor. The primary rotor may be free to rotate by approximately plus or minus one pole of the secondary rotor. As such, when the two rotor components have opposite polarities aligned, the motor may be in a field weakened state. Generally, the field weakened state may be the normal state of the motor. As a significant load is encountered, the rotors may automatically transition to a non-weakened state wherein similar polarities are aligned on the rotors. A permanent magnet, brushless motor as described herein may be employed at a motor level or integrated into a linear actuator, wherein the rotor of the permanent magnet, brushless motor may include a hollow shaft.

Abstract: An axial rotary energy device including a segmented stator assembly having a plurality of segments arranged in an annular array. Each stator segment is constructed by stacking a plurality of PCB power conductor layers and a plurality of PCB series layers. Each layer having radial conductors extending from an inner via to an outer via. The vias electrically connect selected radial conductors of the series conductor layer and power conductor layer. Each power conductor layer includes a pair of positive and negative terminal vias for one phase of the electric current connected to selected outer vias. A daughter PCB layer electrically connects two adjacent segments together by having a first portion electrically connected to a negative terminal via located in one segment and a second portion electrically connected to a positive terminal via located in an adjacent segment together with a current conductor electrically connecting the two terminal vias together.

Abstract: A synchronous motor and a valve having a valve actuator and valve assembly is provided. The valve actuator includes the synchronous motor. The synchronous motor utilizes a magnetic coil, a stator and a rotor to generate rotational movement to drive the valve member for the valve assembly. The valve has a normal state in which the valve is maintained when power is not supplied to the motor. The valve has a non-normal actuated state when power is supplied to the motor. The motor is stalled in the non-normal state to maintain the valve in that state. The rotor includes a rotor shaft that passes through a magnetic hub of the stator. The rotor shaft is supported by a plurality of plastic and/or nylon bearings to prevent corrosion therebetween when the rotor shaft and bearings remain in a substantially fixed orientation for an extended period of time.

Abstract: An electric motor (10) includes a stationary shaft-shaped central portion (100) extending through respective central portions of an inner rotor (301), an outer rotor (302), and a stator (200), and a cooling structure (400) provided using the interiors of the stator and the shaft-shaped central portion. The motor can be used as an in-wheel motor for directly driving each wheel of the motor vehicle.

Abstract: An electric motor is provided which includes a stator, in which field magnets are fixedly and radially installed on a circular panel-shaped base. A coaxial cylindrical rotor is coupled to a shaft and is configured to allow the stator to be located at an inside thereof, the rotor being configured such that magnets, having different polarities to form each pair, are attached on an outer cylinder and an inner cylinder of the rotor and are arranged opposite each other. A rotary magnet plate is coupled to the shaft on a top of the cover, and is provided with a number of magnets corresponding to a number of pairs of the rotor magnets. The respective pairs of rotor magnets are arranged on the outer and inner cylinders while being spaced apart from each other by a predetermined interval.

Abstract: An apparatus for generating electricity from a relatively low velocity exhaust produced by a piece of machinery. The apparatus includes a fan assembly located inside a frame mounted adjacent to the exhaust vent found on the piece of machinery. The fan assembly includes a plurality of fixed vanes that extend transversely into the exhaust gas. The ends of the vanes are attached to two side plates that rotate freely around the frame's center axis. Attached to the inside side plate is an outer housing with two magnetic plates mounted therein. The two magnetic plates are spaced apart thereby forming a gap in which a stator disc with a plurality of coil members is formed. The stator disc is fixed to an axle that is longitudinally aligned with the center axis of the outer housing and the fan assembly. During operation, the exhaust gas causes the fan assembly and the outer housing to rotate.

Abstract: A wind turbine with an electric generator, having a vertical axis of rotation, the wind turbine having: a cantilevered spindle having an upper end and a lower base for securing to a support structure, the spindle having an electric generator stator disposed about the spindle in communication with electrical conductors; a rotor assembly comprising a sleeve and a rotor housing mounted coaxially around the spindle and the stator for rotation about the vertical axis, the rotor housing having a number of permanent magnets disposed about the stator mounted in the rotor housing, the rotor assembly including rotor bearings mounting the rotor housing to the spindle; and a number of blades mounted to the rotor housing, the electric generator optionally having: a stator having a first annular flux surface and a second annular flux surface transverse the axis of rotation and a plurality of armature sections disposed in a circumferential array wherein each armature section has metal wire coils in communication with electr

Abstract: A motor for driving an actuator used such as for a throttle valve of an automobile engine and an optical axis controller of an automobile headlight. In two cup-shaped rotor yokes each provided with an internal diameter enlarged part at its opening, a ring-shaped joint material with an external diameter fitting into this internal diameter enlarged part is inserted into the internal diameter enlarged part to form a rotor yoke assembly. A motor is available with high durability against vibration and shock owing to high accuracy in dimensions, lightweight, and high rigidity of the rotor.

Abstract: The brushless electric machine includes a first drive member (30U) having a plurality of permanent magnets (32U); a second drive member (10) having a plurality of electromagnetic coils and capable of movement relative to the first drive member (30U); and a third drive member (30L) disposed at the opposite side from the first drive member (30U) with the second drive member (10) therebetween. The second drive member (10) has magnetic sensors (40A, 40B) for detecting the relative position of the first and second drive members. The third drive member (30L) has at locations facing the permanent magnets of the first drive member (30U) a plurality of magnetic field strengthening members (32L) for strengthening the magnetic field at the location of the second drive member (10) in conjunction with the permanent magnets.

Abstract: An electric machine includes a stator, and a rotor positioned adjacent the stator and configured to rotate with respect to the stator. The rotor includes a plurality of laminations having an outside diameter and stacked in a stackwise direction. Each lamination includes a plurality of non-linear slots positioned inward of the outside diameter. Each non-linear slot includes an inner portion spaced a first distance from the outside diameter and two end portions disposed a second distance from the outside diameter. The second distance is smaller than the first distance. The rotor also includes a plurality of permanent magnets. Each magnet is disposed in one of the non-linear slots.

Abstract: At a time of a heating high-load operation, a harmonic current is flown in an armature winding to induction-heat rare-earth magnets, thus reducing a residual magnetic flux density. Thereby, the number of rotations of a radial gap type motor is improved. The rare-earth magnets are provided near a cooling medium passage extending substantially in parallel with a flow line of a cooling medium, so that the cooling medium recovers heat of the heated rare-earth magnets. At a time of a cooling high-load operation, a greater number of rotations are obtained with respect to the same torque command value, by a field weakening control by means of a current-phase advance.

Abstract: A motor-generator includes a rotor that rotates about an axis of rotation, and a stator that is stationary and magnetically interacts with the rotor. The rotor is constructed of two spaced apart rotor portions having magnetic poles that drive magnetic flux across an armature airgap formed therebetween. An armature, located in the armature airgap, has a substantially nonmagnetic and low electrical conductivity form onto which wire windings are wound. The form has a free end that extends inside the rotor, and a support end that attaches to the stationary portion of the motor-generator. The form is constructed with a thin backing portion and thicker raised portions extending from the backing portion in the direction of the magnetic flux. The wire windings have multiple individually insulated conductor wire. The conductors of a single wire are electrically connected together in parallel and electrically insulated between each other along their length inside the armature airgap.

Abstract: An electrical synchronous machine, in particular for use as a drive machine in motor vehicle applications. A stator has an electrical winding arrangement for generating a rotating field. A rotor has magnetic flux generating means for generating a rotor flux with which the rotating field interacts. The rotor has a first rotor section with first magnetic flux generating means and a second rotor section with magnetic flux influencing means. It is possible to move the two rotor sections relative to one another between at least a first and a second relative position in such a way that the rotor flux provided by the rotor has a different magnitude in the two relative positions.

Abstract: An electric motor having a first rotor, a second rotor and a third rotor, a first permanent magnet, a second permanent magnet and a third permanent magnet, a first stator and a second stator, a first electromagnet and a second an electromagnet with one end of the core larger than the other, a shaft, a shaft rotation position sensor and an electric switch.

Abstract: A machine useful for ship propulsion purposes includes a ship propulsion motor with two concentric air gaps. In one embodiment, the machine includes a rotor with an inner rotor core and an outer rotor core; and a double-sided stator with an inner stator side and an outer stator side. The double-sided stator is concentrically disposed between the inner rotor core and the outer rotor core.

Abstract: A high-torque electric motor having a rotor supported by an elongated torque arm comprising a pair of frustoconical-shaped support members. The rotor has a spherical-shaped outer surface and a complementarily shaped stator cavity. The spherical magnetic elements and the conical support members cooperate to brace the rotor against deflection along its rotational axis.

Abstract: A powertrain is provided that includes an engine as well as a transmission having an input member and an output member. The powertrain also includes a motor/generator that has an energizable stator, a first rotor and a second rotor (i.e., a dual rotor motor). Both of the rotors are rotatable via energization of the stator. A first torque-transmitting mechanism, referred to as the engine clutch, is selectively engagable to connect the engine for common rotation with one of the first and the second rotors. A second torque-transmitting mechanism, referred to as the motor clutch, is selectively engagable to connect the first rotor for common rotation with the second rotor. The transmission input member is continuously connected for common rotation with the other of the first and second rotors.

Abstract: An axial field generator for use with the Sikes Windcrank™ vertical axis wind turbine is disclosed. One embodiment of the axial generator employs: 16 pairs of puck or disk shaped permanent magnets are provided radial and angular location by an index plate. and mounted on two opposing soft steel rotor plates by virtue of magnetic force. the magnets mounted with opposing fields that alternate in pole orientation: and a stator with 12 electronically commutated circular coils loaded with ferrite cores. The stator is a dielectric plate structure interposed between the opposing rotor plates. The stator coils may be switched to provide 4 poles in a three-phase AC configuration, up to 12 phase with single poles for each phase; or electronically rectified and commutated to provide DC voltage, that may be inverted into any useful wave form.

Abstract: A power generator produces electromotive forces in the same direction on all windings to prevent lowering of rotational forces of rotor plates due to magnetic fields. The generator includes first windings divided in plural number and wound around a fixed ring core in opposite directions. Second windings having the same constitution as the first windings are wound at 45° to the first windings. Capacitors are connected to one end of each of the first and second windings. A first rotor plate having first permanent magnets is provided on one surface of the ring core and a second rotor plate having second permanent magnets is provided on the opposite surface of the ring core. The two rotor plates are provided on a driving shaft so that the same magnetic poles thereof oppose each other and rotate to output electricity generated on the first and second windings via the capacitors.

Abstract: An armature core includes a core portion formed of a lamination of plural noncrystalline metallic foil bands and resin for bond-fixing the non-crystalline metallic foil bands, wherein the armature core is provided with at least two cut surfaces with respect to the lamination layers. Amorphous metal is used as the iron base of the non-crystalline metallic foil bands. The cut surfaces are perpendicular to the lamination-layers of the non-crystalline foil bands. For the amorphous core, a resin mold is formed. The contact portions between winding wires and amorphous are provided with edge roundness. Further, an axial gap motor using cut cores of amorphous lamination as stator cores is provided.

Abstract: A composite rotor for an axial airgap, permanent magnet dynamoelectric machine comprises a plurality of magnet subassemblies adhesively bonded together to form the rotor. Each magnet subassembly comprises a rotor permanent magnet and an optional spacer. A fibrous belt is wrapped around the periphery of each subassembly to provide high tensile strength at least along the radial sides of the subassembly. The belt is preferably infiltrated with an adhesive agent, such as an epoxy resin, that is used to bond the subassemblies. The rotor is thereby provided with high strength and low mass, making it suitable for use in a high-speed, high pole count electric machine.

Abstract: An electric motor (10) is an in-wheel motor. The motor (10) includes an outer rotor, (302), an inner rotor (301), a stator (200), and a shaft-shaped central portion (100). The outer rotor includes a magnet (305b) and is disposed closely to a load. The inner rotor includes a magnet (305a) and is disposed away from the load. The stator is disposed between the outer rotor and the inner rotor, and includes a stator coil. The shaft-shaped central portion extends completely through respective central portions of the outer rotor, the inner rotor and the stator. The shaft-shaped central portion defines a stationary structure. A power supply system (500) is provided using interiors of the stator (200) and the shaft shaped central portion (100).

Abstract: A polyphasic multi-coil generator includes a driveshaft, at least first and second rotors rigidly mounted on the driveshaft so as to simultaneously synchronously rotate with rotation of the driveshaft, and at least one stator sandwiched between the first and second rotors. The stator has an aperture through which the driveshaft is rotatably journalled. A stator array on the stator has an equally circumferentially spaced-apart array of electrically conductive coils mounted to the stator in a first angular orientation about the driveshaft. The rotors and the stator lie in substantially parallel planes. The first and second rotors have, respectively, first and second rotor arrays.

Abstract: To provide a technique that improves an efficiency of using a magnetic field in a brushless electric machine. A brushless electric machine includes a first member having N sets (N is an integer of 2 or more) of electromagnetic groups, and a second member that has N+1 sets of magnetic field forming member groups and can move in a predetermined moving direction in relative to the first member. One set of the electromagnetic coil group and one set of the magnetic field forming member group are alternately disposed along a direction perpendicular to the moving direction.

Abstract: An electromechanical machine having a stator and a rotor, the stator including at least one stator module of N toroid shaped electromagnets, the electromagnets arranged along an arc a predetermined distance apart defining a stator arc length. Each of the electromagnets has at least one gap. The rotor includes a disc adapted to pass through the at least one gap. The disc includes a plurality of permanent magnets spaced side by side about a periphery thereof and arranged so as to have alternating north-south polarities. The permanent magnets are sized and spaced such that within the stator arc length the ratio of permanent magnets to electromagnets is N+1 to N, where N is the number of electrical excitation phases applied to the electromagnets.

Abstract: An axial air-gap electronic motor is arranged such that a teeth surface of a stator and a magnet surface of a rotor are arranged opposedly with a predetermined gap therebetween along an axis line direction of an output shaft of the rotor. The rotor has a rotor back yoke arranged coaxially with the stator, and a rotor magnet installed to the rotor back yoke so as to face the teeth surface of the stator. The rotor magnet is provided with an anchor magnet which is integral with the rotor magnet and is arranged on a back surface side of the rotor back yoke.

Abstract: There is provided a generator which produces electromotive forces in the same direction on all windings to prevent occurrence of leakage magnetic fields of the windings and lowering of the rotational forces of rotor plates due to the leakage magnetic fields from the windings and offers high efficiency without accompanying any circuit loads.

Abstract: An electromagnetic moving system comprises a stator, a moving body and a controller. The stator comprises a circuit board with two layers of electrically connected coil windings spaced apart in a series way and made as spirals with center and peripheral points. The spirals of one layer are shifted in respect to the spirals of the adjacent layer along the line connecting the center points thus the center points of the spirals of one layer in transparent view are located between two nearest spirals of the adjacent layer. Each of the spirals of one layer in transparent view at least partially overlaps two nearest spirals of the adjacent layer. The moving body is comprised of one permanent magnet such as to cause interaction with the stator when it is powered, thus creating a force tending to propel the moving body along the line connecting said center points.

Abstract: An apparatus, system, and method are disclosed for an efficient hub motor. A stator is attached to a shaft. Coils are embedded in the stator in a circular pattern. Two rotors are rotatably coupled to the shaft with the stator between them. Permanent magnets are embedded in each rotor. Each permanent magnet and each core has a similar cross-sectional shape. The permanent magnets are positioned in a circular pattern corresponding to the coils. The permanent magnets are positioned so that when a coil aligns with a permanent magnet a next coil aligns between two magnets. Shorting bars connect exterior edges of the permanent magnets. A sequence control connects each coil so that current flows in a coil in one direction and the sequence control disconnects the coil and reconnects the coil with current flowing in the opposite direction in response to a set of permanent magnets aligning with a coil.

Abstract: A magnetic pre-pressurizing section for pre-pressurizing the inner ring of the bearing in the axial direction by a difference of magnetic forces of permanent magnets of the two rotors is arranged. The magnetic pre-pressurizing section is constructed by a difference of a magnetizing amount for forming permanent magnets 8b, 9b arranged in the respective rotors. The magnetic pre-pressurizing section is also constructed by a difference of distances of an air gap L1 of a stator 2 and a permanent magnet 8b1, and an air gap L2 of the stator 2 and a permanent magnet 9b1. The magnetic pre-pressurizing section is also constructed by a difference of thicknesses of the rotating axis direction of a permanent magnet 8b1 and a permanent magnet 9b2 arranged in the respective rotors.

Abstract: An electrical synchronous machine, in particular for use as a drive machine in motor vehicle applications. A stator has an electrical winding arrangement for generating a rotating field. A rotor has magnetic flux generating means for generating a rotor flux with which the rotating field interacts. The rotor has a first rotor section with first magnetic flux generating means and a second rotor section with magnetic flux influencing means. It is possible to move the two rotor sections relative to one another between at least a first and a second relative position in such a way that the rotor flux provided by the rotor has a different magnitude in the two relative positions.

Abstract: An electric motor (10) is an in-wheel motor. The motor (10) includes an outer rotor, (302), an inner rotor (301), a stator (200), and a shaft-shaped central portion (100). The outer rotor includes a magnet (305b) and is disposed closely to a load. The inner rotor includes a magnet (305a) and is disposed away from the load. The stator is disposed between the outer rotor and the inner rotor, and includes a stator coil. The shaft-shaped central portion extends completely through respective central portions of the outer rotor, the inner rotor and the stator. The shaft-shaped central portion defines a stationary structure. A power supply system (500) is provided using interiors of the stator (200) and the shaft shaped central portion (100).

Abstract: A rotor 31 has permanent magnets 31a disposed on a surface of a disk-shaped back yoke 31b in such a manner that long sides of each permanent magnet extend in a radial direction and that a South pole and a North pole of the permanent magnet 31a are arranged in a circumferential direction. The four permanent magnets 31a are equally spaced from one another in the circumferential direction, and circumferentially-opposed magnetic poles of any two adjacent permanent magnets 31a are of the same magnetic polarity. Rotor cores 31c of a generally fan-shape are fixed to the back yoke to generally cover the four permanent magnets 31a. A flux barrier 31d for reducing the short-cutting of magnetic flux of the permanent magnet 31a is provided between any two adjacent rotor cores 31c, and is disposed at a radially-extending central portion of the permanent magnet 31a.

Abstract: A system for generating an electrical current in a circuit includes a rotor, a stator and a motor for rotating the rotor about a rotation axis. A plurality of permanent magnets are mounted on the rotor and radially distanced from the rotation axis. With this structure, the permanent magnets rotate with the rotor to establish a time-varying magnetic field. A winding is attached to the stator, connected to the circuit and immersed in the time-varying magnetic field generated by the permanent magnets. In one implementation, a switch is provided to reconfigure the circuit between a first, open-circuit configuration in which little or no current flows through the circuit, and a second closed-circuit configuration in which a current is generated at the winding for flow through the circuit.

Abstract: The present invention provides a system and apparatus that includes an induction motor and/or a fan assembly. The motor includes a housing having an aperture and a shaft axially disposed within the housing and having an end extending through the aperture. The motor also includes a rotor that has one or more sets of radius extenders connected to the shaft within the housing, and a stator disposed within the housing and separated from the rotor by an air gap. The rotor typically includes one or more sets of permanent magnets attached along a perimeter of the radius extenders and at least a portion of the radius extenders is made of a magnetically conductive material. The stator typically includes a core structure of magnetically conductive material having a set of slots arranged on an internal face of the core structure and one or more sets of coils disposed within the slots.

Abstract: An electric motor features liquid cooling capability. A rotor and a secondary rotor are coupled to a shaft for rotation therewith. The rotor comprises a first annular member and magnets secured to the first annular member. The secondary rotor comprises a second annular member and secondary magnets secured to the second annular member. A stator is spaced axially apart from the rotor and the secondary rotor. The stator comprises a plurality of generally planar windings secured to a magnetic core and a secondary planar windings secured to a secondary magnetic core. The magnetic core has at least one cooling channel.

Abstract: An electric motor features liquid cooling capability. A rotor is coupled to a shaft for rotation therewith. The rotor comprises a first annular member and magnets secured to the first annular member. A stator is spaced axially apart from the rotor. The stator comprises one or more generally planar windings bonded to a first side of a magnetic core. A cover is secured to a second side of the magnetic core. The second side is opposite the first side. The magnetic core has at least one cooling channel in the second side of the magnetic core, the cooling channel adapted to receive a liquid coolant.

Abstract: A rotor of an axial gap motor has a circular rotor core. A circular frame member is put on one axial face of the circular rotor core. The frame member has a plurality of magnet receiving recesses that are circularly arranged about the axis of the circular frame member at evenly spaced intervals. A plurality of permanent magnets are received in the magnet receiving recesses. A connecting structure connects the circular rotor core and the circular frame member together.

Abstract: An electric generator is disclosed, which comprises: at least a magnet, each having more than two poles; and at least a claw-pole set, each being composed of an inner caw-pole and an outer claw-pole; wherein, the inner caw-pole and the outer claw-pole are interlaced arranged and used for guiding magnetic flux; the inner claw-pole is connected to an iron core whose outer diameter is smaller than the magnet and thus the loop of the inner claw-pole and the outer claw-pole is conducted; the core is winded by a solenoid coil; the number of claws of the inner claw-pole is the half of the pole number of the magnet while the outer claw-pole is the same, so that, as the magnet is move relative to the claw-pole set, the magnetic flux passing through the solenoid coil will change continuously and thus an induction electromotive force is generated.

Abstract: An electrical machine having a magnet assembly with a magnet carrier ring with an even number of permanent magnets mounted in the carrier ring around a circular locus, and a conductor assembly with one or more conductor circuits wound in a double helix wave winding around a flat conductor support ring with the conductor circuits having uniformly curved conductor segments of involute or arcuate configuration wherein the magnet assembly and conductor assembly are contained in a housing with the magnet assembly rotating relative to the conductor assembly.

Abstract: A multi-phase electric motor comprises a stator comprising a plurality of wire coils surrounding a non-magnetizable core; a rotor with permanent magnets embedded therein, the rotor being disposed adjacent to the stator, the rotor being mounted on a rotatable drive shaft; a power source; a position sensor operably connected to the rotor; and a control circuit operably connected to the power source, the position sensor, and the wire coils, for controlling distribution of electrical energy to the wire coils. In this motor the control mechanism transfers electrical charge from a first coil to a second coil.

Abstract: In an electric rotary machine, a stator, a metallic supporting member configured to support the stator, and a rotor are provided, the rotor is relatively rotatably supported with respect to the stator, a magnetic path is formed via a gap portion between the stator and the rotor to give a torque to the rotor, and a space section is provided to interrupt the magnetic path at a position of the metallic supporting member near to a magnetic pole of the stator facing the gap portion.

Abstract: A motor/generator is basically provided with a stator, a first rotor member and a magnetic resistance changing mechanism. The stator has a plurality of coils configured and arranged to be energized with a composite electrical current to form first and second magnetic fields. The first rotor member is configured and arranged to be rotated with respect to the stator using the first magnetic field. The magnetic resistance changing mechanism is configured and arranged to change a magnetic resistance between the stator and the first rotor member using the second magnetic field.

Abstract: There is provided a method for manufacturing a stator core for an axial air-gap electronic motor, in which core sheets are laminatedly fixed while being shifted with predetermined intervals. The method includes a step in which first side surfaces in the circumferential direction (first slot surfaces 25) of the first to nth (n is a positive integer) core sheets are blanked out of a mother sheet 60 by moving first blanking punches 360 with predetermined intervals via a first control means 700; and a second blanking step in which second side surfaces in the circumferential direction (second slot surfaces 26) of the first to nth (n is a positive integer) core sheets are blanked in succession by moving a second blanking punch 460 with predetermined intervals via a second control means 700.