K
Keiji Oda
Researcher at Hitachi
Publications - 40
Citations - 825
Keiji Oda is an academic researcher from Hitachi. The author has contributed to research in topics: Rotor (electric) & Stator. The author has an hindex of 14, co-authored 40 publications receiving 825 citations.
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Patent
Permanent magnet dynamo-electric machine
TL;DR: In order to realize a permanent magnet dynamo electric machine which permits a high speed of rotation, a stator 20 having a stators iron core 22 and a rotor 30 facing the inner circumference of the stators and rotatably supported thereby, the rotor 30 having a rotor iron core 32 and a plurality of permanent magnets 36 arranged inside the rotor IR core 32 so as to face the stator IR core 22 as discussed by the authors.
Patent
Permanent magnet rotating electric machine and electrically driven vehicle employing same
TL;DR: A rotating electric machine comprises a stator having stator salient poles, three-phases windings wound around them, a rotor rotatable held inside the stator, and permanent magnets inserted into said rotor and positioned opposite to the salient poles as mentioned in this paper.
Patent
Permanent magnet electric rotating machine and electromotive vehicle using permanent magnet electric rotating machine
TL;DR: In this paper, a magnetic gap is provided between a permanent magnet of a rotor and an auxiliary magnet pole portion which is arranged adjacent to the permanent magnet in a peripheral direction and a gradual change in a magnetic flux density distribution of a surface of the rotor is obtained and a cogging torque and a torque pulsation are restrained.
Patent
Cooling system of electric automobile and electric motor used therefor
TL;DR: In this paper, a cooling system for an electric automobile is characterized in that a heat source is forcibly cooled with a coolant of non-freeze solution, forcibly recirculated through a pipe.
Patent
Turbo-charger with rotary machine
Keiji Oda,Shigeki Saito +1 more
TL;DR: In this article, a turbo-charger with a rotor directly connected to the turbine shaft is described, and a turbine impeller is secured to a turbine shaft and a compressor is driven by the rotor.