To provide a rotary electric machine capable of reducing torque pulsation in a wide operation range.SOLUTION: A rotary electric machine is provided with: a stator; and a rotor with a rotor core, in which the rotor core has: a d-axis core (41) and an inner peripheral side core which are arranged on an outer peripheral side and an inner peripheral side of a magnet insertion hole, respectively; and a q-axis core (46) adjacent to the d-axis core, the d-axis core is coupled with the inner peripheral side core by a first bridge part (61) and a second bridge part (62) adjacent to both ends of the magnet insertion hole, distance L1 between an end on a side of the first bridge part of the d-axis core and a magnetic pole center (C) is larger than distance L2 between a connection part of the first bridge part and the d-axis core and the magnetic pole center, distance L3 between an end on a side of the second bridge part of the d-axis core and the magnetic pole center is larger than distance L4 between the connection part of second bridge part and the d-axis core and the magnetic pole center, and the rotor core has a plurality of kinds of cross-sectional shapes for one pole pitch angle τp.SELECTED DRAWING: Figure 11
【課題】広い運転範囲でトルク脈動を低減できる回転電機を提供する。【解決手段】回転電機は、固定子と、回転子コアを備える回転子とを備え、回転子コアは、磁石挿入孔の外周側および内周側にそれぞれ配置されるd軸コア(41)および内周側コアと、d軸コアと隣接するq軸コア(46)を有し、d軸コアは、磁石挿入孔の両端部の隣接する第1ブリッジ部(61)および第2ブリッジ部(62)により内周側コアと連結され、d軸コアの第1ブリッジ部側の端部と磁極中心(C)との距離L1が、第1ブリッジ部とd軸コアとの接続部と磁極中心との距離L2よりも大きく、d軸コアの第2ブリッジ部側の端部と磁極中心との距離L3が、第2ブリッジ部とd軸コアとの接続部と磁極中心との距離L4よりも大きく、回転子コアは1極ピッチ角τp分の断面形状を複数種類有する。【選択図】図11
ROTARY ELECTRIC MACHINE, ROTARY ELECTRIC MACHINE DRIVE SYSTEM, AND ELECTRIC VEHICLE
回転電機、回転電動機駆動システム、並びに電動車両
31.10.2019
Patent
Elektronische Ressource
Japanisch
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