基于端电压对称的无位置传感器无刷直流电机位置信号相位校正

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Abstract The paper analyzes the relationship between position phase error and terminal voltage of sensorless brushless dc motor in detail. It is found that terminal voltage error can exactly reflect position phase error. Based on the aforementioned analysis, a novel control method to correct position phase is proposed. Terminal voltage error is input to PI controller, and delaying angle after zero-crossing is adjusted in time. Thus the phase error is corrected immediately. The validity of the method is verified by experiments.

Key words： Brushless DC motor position sensorless phase error of terminal voltage closed loop control

Received: 25 February 2008 Published: 13 February 2014

PACS:

TM351

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	Articles by authors
	Wu Xiaojing
	Zhou Bo
	Song Fei

Cite this article:

Wu Xiaojing,Zhou Bo,Song Fei. A New Control Method to Correct Position Phase for Sensorless Brushless DC Motor[J]. Transactions of China Electrotechnical Society, 2009, 24(4): 54-59.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2009/V24/I4/54

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