突極形永久磁石同期電動機のトルクフィードバック制御法

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書誌事項

タイトル別名
  • Torque feed-back control for salient pole permanent magnet synchronous motor at weakening flux control range
  • トツキョクケイ エイキュウ ジシャク ドウキ デンドウキ ノ トルクフィードバック セイギョホウ

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説明

At high speed range in voltage source inverter (VSI) fed permanent magnet synchronous motor gap flux is weakened to limit terminal voltage for saving the capacity of VSI. In weakening flux operation of salient pole PMSM, d-axis current and qaxis current can't be decided deductively due to reluctance torque. To cope with this problem we propose feedback control of motor torque, which is calculated from current, voltage and motor speed. By this control method torque and terminal voltage can be determined without measuring them directly. In this paper, the proposed control system is discribed, the transient characteristic is studied and the test results. Lastly we show make it clear that our method is basically effective for railway vehicle traction.

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