Loss Calculation of Induction Motors Considering Harmonic Electromagnetic Fields in Stator and Rotor

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  • 固定子及び回転子の高調波電磁界を考慮した誘導電動機の損失算定
  • コテイシ オヨビ カイテンシ ノ コウチョウハ デンジカイ オ コウリョ シタ ユウドウデン ドウキ ノ ソンシツ サンテイ
  • Loss calculation of induction motors considering harmonic electromagnetic field in stator and rotor

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A method of loss calculation for induction motors is proposed. The combined 3D-2D time stepping finite element analysis is carried out to obtain the copper loss and the time-variation of the magnetic field in the motor. The iron loss is calculated approximately considering the time-variation of the magnetic field direction and the minor hysteresis loops caused by the time-harmonic fields using practical computer resources. The proposed method is applied to 4 types of induction motors, which are the solid rotor induction motors with/without slot and the cage induction motors with/without skew. The measured and the calculated total losses and the iron losses agree well in all cases. The differences of the loss distributions of each motor are also compared and investigated.

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