PROBLEM TO BE SOLVED: To provide a permanent magnet type rotary electric machine for electric vehicles using rare earth-less magnets capable of ensuring a peak torque or power generation torque for instantaneously assisting engine torque while ensuring characteristics in high-speed operation.SOLUTION: The rotator has plural permanent magnets, each of which has at least one side formed in an arc-shape in a cross-section in an axial direction. Defining the central axis of a magnetic pole as d-axis; and an axis which is separated from the d-axis by 90° in electric angle as q-axis, the permanent magnet type rotary electric machine of the rotator is arranged so that a line connecting the center point of the arc and the arc has a first pair of permanent magnets which does not cross the d-axis, and the line has a second permanent magnet pair which crosses the d-axis.
【課題】希土類レス磁石を用いても、エンジンのトルクを瞬時的にアシストするピークトルク、または発電トルクを確保し、かつ高速運転時の特性も確保可能な電動車両用の永久磁石式回転電機を提供する。【解決手段】軸方向断面の少なくとも一辺が弧状に形成されている永久磁石を備え、複数の永久磁石を有する回転子において、磁極の中心軸をd軸、d軸に対し電気角で90?隔てた軸をq軸とした場合、前記弧の中心点と前記弧とを結ぶ線が、d軸と交差しない第一の永久磁石対と、前記線が、前記d軸と交差する第二の永久磁石対とを有するように、永久磁石式回転電機の回転子を構成する。【選択図】図5
ROTATOR, PERMANENT MAGNET TYPE ROTARY ELECTRIC MACHINE USING THE SAME, ELECTRICAL DRIVE SYSTEM, AND ELECTRIC VEHICLE
回転子、およびこれを備えた永久磁石式回転電機、電動駆動システム、電動車両
2015-07-06
Patent
Electronic Resource
Japanese
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