Hitachi Automotive Systems, Ltd.

Hitachi, Ltd.

Hitachi Astemo Ltd.

Tsuyoshi Goto

Kenichi Nakayama

Yasuyuki Saito

Noriaki Hino

Shinji Sugimoto

Takashi Ishigami

Takashi Naganawa

Katsuhiro Hoshino

Yoshimi Mori

Hiromitsu Okamoto

Mitsuaki Mirumachi

Satoshi Yamamura

Hiromichi Hiramatsu

Tomoaki Kaimori

Tomohiro Adachi

Kou Ajima

A rotating electric machine includes a stator having a stator coil and a rotor provided rotatably around a specific rotation axis with respect to the stator. The rotor includes a plurality of magnets, a plurality of magnetically-assisted salient pole members provided between poles of any adjacent two magnets from among the plurality of magnets, and a magnetoresistance variation unit provided in the magnetically-assisted salient pole member along an axial direction of the rotation axis at a position offset in a circumferential direction of the rotation axis from a q-axis passing through a salient pole center of the magnetically-assisted salient pole member. The amount of offset of the magnetoresistance variation unit from the q-axis varies depending on positions of the magnetically-assisted salient pole members so that torque fluctuations cancel each other when power is applied.

Electric machine with q-offset grooved interior-magnet rotor and vehicle

Electric machine with Q-offset grooved interior-magnet rotor and vehicle

An electric rotating machine includes a stator, a rotor inserted in a bore of the stator such that an air gap is formed between the stator and the rotor, and a plurality of permanent magnets embedded in a peripheral portion of the rotor core of the rotor in a circumferential arrangement. Slits are formed in portions of the rotor core each extending between the adjacent magnetic poles. Compressive stress is induced in portions of the rotor core each extending between the slit and the permanent magnet when stress is induced in the portion of the stator core extending between the slit and the permanent magnet by centrifugal force produced when the rotor rotates and acting on the permanent magnet and a pole piece covering the permanent magnet.

Electric rotating machine and hybrid car provided with the same

A rotating electric machine includes: a stator and a rotor, wherein the rotor includes a rotor core in which rotor plates punched from roll formed magnetic steel plate are laminated, and a spider that retains the rotor core; the rotor plates and the rotor core include a plurality of keys arranged in their inner circumference contacting with the spider; the spider includes a plurality of keyways arranged in its outer circumference contacting with the rotor; a plurality of keys of the rotor core and a plurality of keyways of the spider are formed in such a manner that they fit with each other; and the plurality of keys of the rotor core and the plurality of keyways of the spider fit in a combination that renders a weight imbalance of the rotor core due to lamination of the rotor plates and a weight imbalance of the spider cancel each other.

Rotating electric machine and manufacturing method thereof

A rotating machinery is to be provided wherein coils can be wound round a stator core in a minimized state of connected parts. In a rotating machinery comprising a stator formed annularly and a rotor disposed rotatably on the inner periphery side of the stator, the stator comprises a stator core, the stator core having in the circumferential direction a plurality of slots each having a coil inserting portion on the inner periphery side, and coils wound by lap winding within the slots, at least the lap-wound winding portion of the coils in each slot being constituted by a continuous line and wound at a coil end so as to straddle the inner periphery side and the outer periphery side of the slot. According to this construction there is no increase in the number of connected parts even if the number of turns in the winding portion is increased.

Winding arrangement for stator of rotating machinery

In a distribution winding stator using a coil for a rectangular conductor, a coil end is made smaller than before, and the reduction in the current density is aimed, so that a rotary electric machine of a small size and a high power output is obtained. A conductive wire of a rectangular shape in cross section is double-wound, and is allowed to be shifted by the whole width of the wire having double-wound the crowns of both ends, and is formed to crank shape so as to become a length within the range of the intervals of the adjacent slots, so that the conductive wire is formed by being inserted into the slot of the stator.

Rotary electric machine, crank-shaped continuously winding coil, distribution winding stator and forming method thereof

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Hitachinaka, Japan

Tsuyoshi Goto