A rotor core includes magnet insertion holes embedding permanent magnets and arranged in a substantially U-shape, facing an outer circumferential surface of a rotor, and includes hollow portions formed at both side surface portions in a direction orthogonal to a magnetization direction of the permanent magnets embedded in the magnet insertion holes. A permanent magnet group for each pole having the plurality of permanent magnets includes vent holes passing through the rotor core in a direction of a rotating shaft, between one of the magnet insertion holes in which the permanent magnets are embedded and adjacent one of the magnet insertion holes or between the one of the magnet insertion holes and outer circumferential portions of the rotor core. The vent holes are arranged at positions to form the substantially U-shape together with the magnet insertion holes.


    Access

    Download


    Export, share and cite



    Title :

    Permanent magnet-type rotary electric machine and vehicle drive system


    Contributors:

    Publication date :

    2017-06-20


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    H02K Dynamoelektrische Maschinen , DYNAMO-ELECTRIC MACHINES / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



    Permanent magnet type rotary electric machine

    KORI DAISUKE / MIKAMI HIROYUKI / MASUDA SEIKICHI et al. | European Patent Office | 2015

    Free access


    PERMANENT MAGNET, ROTARY ELECTRIC MACHINE, AND VEHICLE

    OKAMOTO YOSHIKO / HORIUCHI YOSUKE / SAKURADA SHINYA et al. | European Patent Office | 2018

    Free access

    MAGNET MATERIAL, PERMANENT MAGNET, ROTARY ELECTRIC MACHINE AND VEHICLE

    HAGIWARA MASAYA / SAKURADA SHINYA / OKAMOTO YOSHIKO | European Patent Office | 2020

    Free access

    PERMANENT MAGNET, ROTARY ELECTRICAL MACHINE, AND VEHICLE

    SANADA NAOYUKI / SAKURADA SHINYA / YAMASHITA TOMOHIRO | European Patent Office | 2017

    Free access