Analysis and Compensation of Inverter Nonlinearity Effect on a Sensorless PMSM Drive at Very Low and Zero Speed Operation
作者： Reiko Raute , Cedric Caruana , Cyril Spiteri Staines , Joseph Cilia , Mark Sumner
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摘要: It has been well established in the literature that inverter nonlinearity effects afflict saliency-based sensorless drives. The leads to generation of signals corrupt useful position information. resulting effect differs depending on injection approach utilized drive. Various compensation techniques overcome this have published literature. This paper is concerned with zero-vector current-derivative technique. varying ON-state resistance power devices signal investigated detail. Knowledge source corrupting facilitates and determines its applicability. Two approaches for are compared. first utilizes a lookup table from offline-processed data, while second one simpler based current-dependent characteristic switching devices. Experimental performance under condition shown both approaches.
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