New Hybrid-excited Motor using Armature Winding as Field Flux Source

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  • Kusase Shin
    Denso Corporation Graduate School of Science and Engineering, Ibaraki University
  • Kurihara Kazumi
    Graduate School of Science and Engineering, Ibaraki University

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  • 電機子巻線を界磁源とする新たなハイブリッド可変界磁モータ
  • デンキシ マキセン オ カイジ ゲン ト スル アラタ ナ ハイブリッド カヘン カイジ モータ

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<p>In this paper, a new hybrid-excited motor is proposed. Its unique feature is that it has no field exciting coil, despite being a type of bypass yoke core (BYC) hybrid-excited synchronous motor. Based on finite element analysis (FEA), the following facts are clarified. Since the stator coil magnetomotive force (MMF) and claw poles rotate at the same speed and in the same direction, they are motionless relative to each other. Since the claw poles are located at one of its ends near the BYC surface with a gap, it receives immovable magnetization by the stator coil MMF through the BYC; then the claw poles can supply a magnetic field flux via the BYC. This flux via the BYC increases the total torque, because its torque is added the two other torque components: the permanent magnet torque and claw poles reluctance torque. In addition, the magnetic polarity and the amount of the flux of the claw poles can be varied by controlling the armature current phase angle.</p>

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