基于电流斜率差值法的开关磁阻电机无位置传感器技术

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Abstract A new method for sensorless control of switched reluctance motor(SRM) at low or middle speed is presented in this paper. This new method is appropriate for chopping model. Via injecting voltage pulse into the idle phases of 12/8 motor, the current slope of three phases can be detected at real time; those discrete results which rising current slope minus falling current slope are filtered to form three envelope curves. The curves are related to phase inductance, so it is convenient to confirm some special rotor positions through these curves’ intersection points. Other positions can be confirmed after calculating the speed. The advantages of control strategy are also listed. Simulation and experimental results show that the proposed method is effective.

Key words： Switched reluctance motor sensorless chopping model current slope difference

Received: 15 February 2010 Published: 07 March 2014

PACS:

TM351

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	Articles by authors
	Mao Yuyang
	Deng Zhiquan
	Cai Jun
	Peng Jingjing

Cite this article:

Mao Yuyang,Deng Zhiquan,Cai Jun等. Sensorless Control of Switched Reluctance Motor Based on Current Slope Difference Method[J]. Transactions of China Electrotechnical Society, 2011, 26(9): 87-93.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2011/V26/I9/87

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