Maximum Torque Control with Inductance Setting of Extended EMF Observer

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  • 拡張誘起電圧オブザーバのインダクタンス設定のみで実現する最大トルク制御
  • カクチョウ ユウキ デンアツ オブザーバ ノ インダクタンス セッテイ ノミ デ ジツゲン スル サイダイ トルク セイギョ

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This paper presents a new maximum torque control with inductance setting in extended EMF observers for sensorless controls. The maximum torque control is defined on maximum torque control f-t axes, whose f-axis is parallel to tangential lines of the constant torque curves in the d-q current axes. The angle between f-t axes and d-q axes is defined as φ. The position estimation error caused by inductance error can be calculated. The inductance is set so as to make the estimated position error equal to φ.<br>Since the maximum torque control is realized simply by making the f-axis current component zero, complicated calculation is not required. Moreover, the proposed control is robust against magnetic saturation. The validity of the proposed system is confirmed by experiments.

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