基于滑模观测器的单绕组多相无轴承电机无位置传感器控制

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Abstract In this paper, the disturbance of the rotor position caused by the current of the suspension plane was discussed in a multiphase permanent magnet bearingless motor system. The detection model and the control algorithm were established based on a sliding mode observer. To ameliorate the system performance and identification accuracy, saturation function and low-pass filter with a variable cut-off frequency were designed. Comparing with conventional sensorless control algorithm based on the back electromotive force(EMF), the proposed scheme is insensitive to motor parameters, and it could inhibit the innate disturbance caused by coupling and enhance the robustness of the bearingless system. The experimental results verify the accuracy and feasibility of the proposed sensorless control scheme based on the sliding mode observer in the multi-phase bearingless motor with single set of windings.

Key words： Sliding mode observer multiphase motor bearingless motor position sensorless control

Received: 21 January 2011 Published: 20 March 2014

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TM351

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	Cheng Shuai
	Jiang Haibo
	Huang Jin
	Kang Min

Cite this article:

Cheng Shuai,Jiang Haibo,Huang Jin等. Position Sensorless Control Based on Sliding Mode Observer for Multiphase Bearingless Motor with Single Set of Windings[J]. Transactions of China Electrotechnical Society, 2012, 27(7): 71-77.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2012/V27/I7/71

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