Examination of Periodic Disturbance Current Control Method: Controlling the Beat Phenomenon of DC Voltage Pulsation in Permanent-Magnet Synchronous Motor Drives

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  • 永久磁石同期モータ駆動システムにおける直流電圧脈動によるビート現象を抑制する周期外乱電流制御方式の検討
  • エイキュウ ジシャク ドウキ モータ クドウ システム ニ オケル チョクリュウ デンアツ ミャクドウ ニ ヨル ビート ゲンショウ オ ヨクセイ スル シュウキ ガイラン デンリュウ セイギョ ホウシキ ノ ケントウ

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We propose a new beatless control mechanism for permanent-magnet synchronous motor (PMSM) drives. In drive systems, the three-phase voltage source induces a ripple component whose frequency is six times that of the voltage source frequency in the DC voltage. Therefore, if the motor frequency becomes six times the voltage frequency, a beat phenomenon, which causes an increase in the motor current ripple is observed. We analyze the beat phenomenon which causes current ripples and propose a method based on periodic disturbance current regulation, i.e., beatless control. We carry out time-domain simulation and various experiments and demonstrate the effectiveness of the proposed controller.

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