Abstract: A rotating electric machine armature core is configured by combining such a number of magnetic tooth sections that corresponds to the number of magnetic poles, each of the magnetic tooth sections including a plurality of first sheet members each of which includes a magnetic tooth portion formed at one end and a root portion formed at the other end with an end face of the root portion having a prescribed external shape, and at least one second sheet member inserted between the individual first sheet members in a laminating direction thereof at a location different from the locations of the other sheet members, the second sheet member including the magnetic tooth portion formed at one end and an overlapping portion formed at the other end, the overlapping portion forming a back yoke portion together with the root portion with a through hole formed at a specified position in the overlapping portion, the overlapping portion jutting out from the root portion in such a manner that the overlapping portion can fit on

Abstract: A hybrid vehicle includes: first and second rotary electric machines; a matrix converter connecting the first and second rotary electric machines to each other to provide AC to AC power conversion between both the rotary electric machines; a battery connected to an electrical path branched off between the matrix converter and the second rotary electric motor; an inverter interposed among the battery, the matrix converter and the second rotary electric machine to convert AC power to DC power and vice versa; and a controller. The controller activates the first rotary electric machine with power fed from the battery and restrains the change in torque output of the second rotary electric machine at the activation of the first rotary electric machine.

Abstract: A rotating electric machine armature core (1) is configured by combining such a number of magnetic tooth sections (2) that corresponds to the number of magnetic poles, each of the magnetic tooth sections (2) including a plurality of first sheet members (6) each of which includes a magnetic tooth portion (3) formed at one end and a root portion (5) formed at the other end with an end face of the root portion (5) having a prescribed external shape, and at least one second sheet member (10) inserted between the individual first sheet members (6) in a laminating direction thereof at a location different from the locations of the other sheet members, the second sheet member (10) including the magnetic tooth portion (3) formed at one end and an overlapping portion (9) formed at the other end, the overlapping portion (9) forming a back yoke portion (8) together with the root portion (5) with a through hole (7) formed at a specified position in the overlapping portion (9), the overlapping portion (9) jutting out from

Abstract: Disclosed is a hybrid system of vehicle capable of accurately generating an engine output in conformity to a required vehicle driving power and suppressing an electric power loss even when a battery is used for correcting electric power to prevent occurrence of overshoot or undershoot. The hybrid system of vehicle is designed to drive a generator by an engine and supply an electric power generated by the generator directly to a wheel-driving electric motor so as to drive the motor. The hybrid system of vehicle comprises required motor output setting means for setting a required output of the motor depending on a required vehicle driving power, required generator output setting means for setting a required output of the generator depending on the required motor output set by the required motor output setting means, and engine output setting means for setting an output of the engine depending on the required generator output set by the required generator output setting means.

Abstract: A rotating electric machine armature core (1) is configured by combining such a number of magnetic tooth sections (2) that corresponds to the number of magnetic poles, each of the magnetic tooth sections (2) including a plurality of first sheet members (6) each of which includes a magnetic tooth portion (3) formed at one end and a root portion (5) formed at the other end with an end face of the root portion (5) having a prescribed external shape, and at least one second sheet member (10) inserted between the individual first sheet members (6) in a laminating direction thereof at a location different from the locations of the other sheet members, the second sheet member (10) including the magnetic tooth portion (3) formed at one end and an overlapping portion (9) formed at the other end, the overlapping portion (9) forming a back yoke portion (8) together with the root portion (5) with a through hole (7) formed at a specified position in the overlapping portion (9), the overlapping portion (9) jutting out from

Abstract: There is provided a method of using an electric machine. To generate torque, electricity is provided to stator coils on a plurality of salient poles of a stator arranged around a rotor having a plurality of salient poles to pull the rotor salient poles in the circumferential direction. To generate electricity, the method comprises rotating the rotor and generating a magnetic field on a magnetizing member. The magnetizing member is arranged coaxially with the rotor and offset from the rotor in the axial direction. The method further comprise conducting the generated magnetic field to the salient poles of the rotating rotor to induce alternating magnetic flux on the stator coils, and recovering electricity generated by the induced alternating magnetic flux from the stator coils. The generated magnetic field does not change its configuration when the rotor rotates except for distances between the closest pairs of rotor salient poles and stator salient poles.

Abstract: A dc motor fuel pump pressurizes and outputs fuel at a pump section (20) fixed to a yoke (3) of a motor section (10) accompanied by drive of a dc motor of mentioned motor section (10). The yoke (3) includes a first tubular yoke (4) provided with a ring-shaped magnet (2) of rare earths on an inner circumference and a second tubular yoke (5) provided on an outer circumference of the first tubular yoke (4) at a position conforming to the magnet. (2).

Abstract: An brush assembly is provided in which electric power losses in brushes 32 are reduced, thereby suppressing an abnormal or excessive rise in temperature of the brushes. A tip end of a lead wire 33 inserted into a corresponding brush 32 in a direction of pressing upon press molding thereof is embedded in the brush in such a manner that it extends over two thirds or more of the length in the pressing direction of the brush 32.

Abstract: The present invention provides a dynamo-electric machine that prevents the lead portions of the coil portions disposed at places, at which mechanical balance is provided, from intersecting each other, that enhances the workability in manufacturing the wiring by wiring a conductor, and that suppresses the defective insulation of the winding. This dynamo-electric machine for use in an electric power steering system has a yoke, n (incidentally, “n” is a common divisor of the number of the magnetic poles and the number of the slots and equal to or more than 2) of the coil portions are parallel-connected between the segments. Moreover, the coil portions are disposed in such a manner as to be symmetrical with respect to a mechanical angle of 360 degrees. Lead parts of the coil portions other than one of the coil portions, which is nearest in a circumferential direction to each of the segments, are drawn therefrom in the same circumferential direction.

Abstract: The present invention provides a dynamo-electric machine that suppresses vibrations caused by imbalance due to electromagnetic forces and that also suppresses imbalance in magnetic attraction forces generated owing to the difference in the number of coil portions among electric circuit portions. This dynamo-electric machine comprises an armature having a winding consisting of a plurality of coil portions each formed by lap-winding a conductor between a corresponding pair of slots formed in an outer circumferential surface portion of a core fixed to a shaft in such a way as to extend in an axial direction thereof, a commutator fixed to an end portion of the shaft and having a plurality of segments to which both end sections of said coil portions are electrically connected, brushes made to respectively abut against the surfaces of the segments of the commutator, and equalizers for connecting said segments, which are to be at equal electric potential, to each other.

Abstract: An brush assembly is provided in which electric power losses in brushes 32 are reduced, thereby suppressing an abnormal or excessive rise in temperature of the brushes. A tip end of a lead wire 33 inserted into a corresponding brush 32 in a direction of pressing upon press molding thereof is embedded in the brush in such a manner that it extends over two thirds or more of the length in the pressing direction of the brush 32.

Abstract: The present invention provides a dynamo-electric machine that suppresses vibrations caused by imbalance due to electromagnetic forces and that also suppresses imbalance in magnetic attraction forces generated owing to the difference in the number of coil portions among electric circuit portions. This dynamo-electric machine comprises an armature having a winding consisting of a plurality of coil portions each formed by lap-winding a conductor between a corresponding pair of slots formed in an outer circumferential surface portion of a core fixed to a shaft in such a way as to extend in an axial direction thereof, a commutator fixed to an end portion of the shaft and having a plurality of segments to which both end sections of said coil portions are electrically connected, brushes made to respectively abut against the surfaces of the segments of the commutator, and equalizers for connecting said segments, which are to be at equal electric potential, to each other.

Abstract: The present invention provides a dynamo-electric machine that prevents the lead portions of the coil portions disposed at places, at which mechanical balance is provided, from intersecting each other, that enhances the workability in manufacturing the wiring by wiring a conductor, and that suppresses the defective insulation of the winding. This dynamo-electric machine for use in an electric power steering system has a yoke, n (incidentally, “n” is a common divisor of the number of the magnetic poles and the number of the slots and equal to or more than 2) of the coil portions are parallel-connected between the segments. Moreover, the coil portions are disposed in such a manner as to be symmetrical with respect to a mechanical angle of 360 degrees. Lead parts of the coil portions other than one of the coil portions, which is nearest in a circumferential direction to each of the segments, are drawn therefrom in the same circumferential direction.