Abstract: In an electrostatic micromotor, a mobile substrate faces a fixed substrate, and electrostatic-interaction elements are provided to allow a relative movement of the mobile substrate with respect to the fixed substrate in a direction of movement. The electrostatic-interaction elements include electrodes arranged on a facing surface of the fixed substrate (2) facing the mobile substrate. The mobile substrate has indentations, which extend within the mobile substrate starting from a respective facing surface that faces the fixed substrate and define between them projections staggered with respect to the electrodes in the direction of movement. Side walls of the indentations have a first distance of separation at the respective facing surface, and a second distance of separation, greater than the first distance of separation, at an internal region of the indentations.

Abstract: A plurality of stator teeth 2 are arranged at a constant interval in a circumferential direction on the inner circumferential face side or the outer circumferential face side of a ring-shaped stator core 1 that is made of a plurality of steel plates. The winding wire 5 is wound about the stator teeth. An insulator 4 that electrically insulates the stator core and the winding wire is provided therebetween. A gap 6 is formed between the winding wire and the insulator. Accordingly, a desired distance can be secured between the stator teeth and the winding wire regardless of the thickness of the insulator, and, thus, the influence of leakage magnetic fluxes that acts on the winding wire can be reduced. Accordingly, the influence of leakage magnetic fluxes formed near the stator teeth that acts on the winding wire can be reduced regardless of the thickness of the insulator.

Abstract: A submersible electric motor has feature to enhance thermal conductivity from the motor interior to the exterior. The motor has a cylindrical housing and a stator rigidly mounted within housing. A rotatable rotor is located within the stator. A gap formed between the stator's outer diameter and the inner wall of the housing is filled with a high thermal conductivity material to improve heat transfer from the motor. The remaining portion of the housing may be filled with a dielectric lubricant that has lesser thermal conductivity than the high thermal conductivity material.

Abstract: An electric motor having a wire connection structure includes a stator including a stator coil, a rotor, a motor housing accommodating the stator and the rotor and having a hole, a cable retaining portion formed on the motor housing for retaining end portions of feed cables, a fixing portion formed on the stator, first terminals connected to the stator coil and arranged on the fixing portion in an orientation different from an orientation of the end portions, second terminals each projecting from each of the end portions to face the corresponding first terminal after being inserted into the hole, at least one of the second terminals being bent, and screw members engaged with the fixing portion after being inserted into the corresponding first and second terminals, each of the screw members jointly fastening the first and second terminals to the fixing portion to electrically connect the first and second terminals.

Abstract: In a cogeneration system having three generation units each equipped with a generator and an internal combustion engine, a single hot water tank is prepared for the three generation units to contain hot water heated by exhaust heat of the engine. The temperature of the hot water contained in the tank and a power demand of an electrical load are detected. Then, the number of the generation unit or units to be operated is determined based on the detected power demand when the detected hot water temperature is equal to or less than a first predetermined value, and operation of the generation unit or units determined to be operated is controlled, thereby reducing a space for the installment of the tank and heat loss from the tank.

Abstract: A permanent magnet motor having three chambers aligned end to end where each chamber has a bar magnet. The north pole of the bar magnet in the center chamber faces the north pole of the bar magnet in the chamber to its right and the south pole of the bar magnet in the center chamber faces the south pole of the bar magnet in the chamber to its left. Structure is provided to move the end magnets away from the center magnet and, by means of springs, alternately sequentially snap the end magnets toward the center magnet to drive the center magnet back and forth in its chamber. Shaft members which are connected to gears are provided to control the movement of the end magnets and to convert the back and forth motion of the center magnet to a rotary motion.

Abstract: An outer-rotor salient-pole concentrated winding motor includes a salient-pole concentrated winding stator and a rotor. The salient-pole concentrated winding stator includes stator core, coils and insulators. The stator core has a plurality of teeth that extend outward in a radial direction of the stator. Each of the insulators includes a projecting engaging portion and a recessed engaging portion. The projecting engaging portion projects outward in the circumferential direction. The recessed engaging portion is formed so that an outer separation wall of the insulator is recessed inward in the circumferential direction. The projecting engaging portion and the recessed engaging portion of adjacent insulators engage with each other when the teeth are inserted into the insulators.

Abstract: It comprises stator including stator core having yoke and a plurality of teeth protruded from yoke, which is formed with slots between adjacent teeth, and rotor having rotor core and permanent magnet formed with a plurality of magnetic poles, which confronts tip ends of teeth via gaps, wherein rotor core is formed by rotor core materials circumferentially equally divided into the predetermined number of divisions, and the least common multiple being N for the number of slots and the number of magnetic poles and the least common multiple being M for the number of slots and the number of divisions, then N is equal to M.

Abstract: An interior permanent magnet machine has non-contiguous, non-magnetic radial slots between the magnets and the cylindrical periphery and the magnets have non-magnetic radial end slots.

Abstract: For providing a permanent magnet type rotary electric machine that can reduce magnetic fluxes concentrated to one side in rotating direction on a magnetic pole circumferential face that causes torque ripple as well as ensure the mechanical strength, in the present invention, an outer circumference of respective magnetic poles is formed in a circular arc having a same curvature as well as the magnetic pole center axes of the respective magnetic poles are displaced with respect to the rotation center of a rotor so that an air gap between a stator and the respective magnetic pole outer circumferences at one side in the rotating direction is widened in comparison with the air gap at the other side.

Abstract: A rotor for use in an electrical motor which includes an anti-expansion ring centrally mounted on the rotor to restrict the extent rotor elements mounted on a rotatable shaft may expand outward due to centrifugal forces generated when the motor is operated. Such motors are suited for use in high rotational speed environments such as electrically controlled turbochargers.

Abstract: A variable turbocharger including a turbine housing, a first scroll fluidly communicating with a turbine, a second scroll formed along an outside of the first scroll, wherein the first scroll and the second scroll are disposed within the turbine housing for exhaust gas to exhaust through the turbine, a partitioning unit for selectively separating the first scroll and the second scroll, and a a flux control valve disposed at the exhaust gas inflow portion and selectively coupled to the partitioning unit for blocking the exhaust gas from flowing into the second scroll. The variable turbocharger may prevent turbo lag at a low speed and be highly efficient at a high speed.

Abstract: A storage disk drive motor 12 includes a stator unit 2, a rotor unit 3, a shaft 41 arranged in a coaxial relationship with a center axis 9, a sleeve unit 22 including a flange portion 223, and a base member 21, having a through-hole, fixed to the sleeve unit 22 by caulking. The flange portion 223 includes a flange lower surface 223b making contact with an upper surface 21a of the base member 21 and a jut 24 protruding downwards from a radial inner side of the flange lower surface 223b. The jut 24 includes a first outer circumferential surface 241 opposed to the inner circumferential surface 21c of the base member 21, a second outer circumferential surface 242 positioned below the first outer circumferential surface 241, and a groove 243 radially inwardly indented from the first outer circumferential surface 241 and the second outer circumferential surface 242.

Abstract: A rotating electrical machine includes: a stator that has a stator core and a stator coil; and a rotor disposed rotatably on an inner circumferential side of the stator core. The stator core includes a plurality of slots opening on the inner circumferential side and the slots are each formed as an open slot with a width of an inner circumferential-side opening thereof ranging along a circumferential direction set substantially equal to or greater than a width of a bottom side measured along the circumferential direction. The stator further includes a slot insulator disposed between inner wall of each of the slots at the stator core and the stator coil and a holding member constituted with a nonmagnetic material and inserted in each of the slots at the stator core so as to hold the slot insulator between two side surfaces present along the circumferential direction at the slot. The stator is formed by winding the stator coil through the plurality of slots.

Abstract: Tubular induction motor with two directions of rotation contained in a tube of a tubular actuator designed to be installed in a building. The tubular induction motor includes a squirrel cage rotor supported by bearings and a stator including a stack of metal laminations forming a central bore and centered in the tube, wherein a support part of a bearing is centered in the central bore, wherein the bearing is of the plain and conductor type and wherein it is placed as close as possible to a short-circuiting ring of the rotor, preferably less than 2 mm, and preferably less than 1 mm away.

Abstract: A spindle motor structure is disclosed having a structure incorporating a spindle motor, a driving substrate, and a base on which the spindle motor and the driving substrate are installed. The spindle motor includes a stator having a core wound with a coil and a rotor rotating about the stator. The driving substrate is aligned at an outer periphery of the rotor and soldered with driving control parts of the spindle motor including a plurality of circuit parts including a driving integrated circuit and the like. The spindle motor is assembled with or dissembled from the base independently from the driving substrate.

Abstract: The invention relates to a permanent magnet rotor, which has a rotor shaft, a rotor stack fixed on the rotor shaft, accommodating pockets provided in the rotor stack and permanent magnets positioned in the accommodating pockets. The accommodating pockets are sealed by means of an adhesive film, as a result of which the permanent magnets are fixed in the accommodating pockets and at the same time the ingress of particles into the accommodating pockets and the discharge of particles out of the accommodating pockets is prevented.

Abstract: The electrical generator allows energy to be recovered and stored from a rotating wheel, cam, gear or the like. The electrical generator includes at least one hollow tube mounted radially on a wheel rim. The wheel rim has a central portion and a circumferential edge, and the hollow tube has opposed first and second ends, respectively positioned adjacent the central portion and the circumferential edge of the wheel rim. At least one first elastic member and at least one second elastic member are mounted within the hollow tube and respectively cover the first and second ends thereof. At least one magnet is slidably received within the hollow tube, and at least one induction coil is mounted about an exterior surface of the hollow tube. An AC to DC converter is in communication with the induction coil, and an electrical battery is in communication with the AC to DC converter.

Abstract: A variable turbocharger including a turbine housing, a first scroll fluidly communicating with a turbine, a second scroll formed along an outside of the first scroll, wherein the first scroll and the second scroll are disposed within the turbine housing for exhaust gas to exhaust through the turbine, a partitioning unit for selectively separating the first scroll and the second scroll, and a flux control valve disposed at the exhaust gas inflow portion and selectively coupled to the partitioning unit for blocking the exhaust gas from flowing into the second scroll. The variable turbocharger may prevent turbo lag at a low speed and be highly efficient at a high speed.

Abstract: A rotating machine has a stator and a permanent magnet rotor that is more easily made, lower cost, and lighter by virtue of a plurality of permanent magnet assemblies mounted on a rotor body. Each magnet assembly includes two facing core plate stacks supporting a permanent magnet between them. Each core plate stack is made from a plurality of core plates of substantially identical size and shape and with on or more holes in substantially the same location to form respective bores in the stack. A tie rod is formed in each bore and retains the plates in a stack via bevels in the holes of the end plates. Preferably, the tie rods also apply compressive force as a result of placing the stacked plates in an injection mold, injecting plastic into the mold to fill each bore with plastic, and allowing the plastic to cure. As the plastic cures, it shrinks so that the tie rods pull the end plates together. To enhance the pressure, the stacked plates can be compressed before and during the injection process.