A Robust Control of Induction Motor Drives by Nonlinear State Feedback-Experimental Verification

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  • 非線形フィードバックによる誘導電動機のロバスト制御 (実機試験による検証)
  • ヒセンケイ フィードバック ニ ヨル ユウドウ デンドウキ ノ ロバスト セイ

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Abstract

We have already proposed a nonlinear feedback control of induction motor drives, where the induction motor is modeled as a bilinear system. This control method guarantees the robust stability in the large. Whereas it is not guaranteed by the so-called vector control method.<BR>This paper gives some experimental results obtained by applying the proposed method to a practical induction motor which is fed by a three-phase twelve-pulse bridge cycloconverter. The proposed method is implemented by a digital signal processor which is a special microprocessor designed for the high speed signal processing. The performance of the proposed method is verified by these experimental results. These results also show that the proposed method is superior, at least for robust stability against the secondary resistance variation from the nominal value, to the vector control method. At the last section, this paper also gives some remarks on applications of this control method to practical systems.

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