考虑饱和效应的永磁同步电机全程无位置传感器控制

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Abstract To overcome the difficulty of position estimation for sensorless control of permanent magnet synchronous motor (PMSM) in low-speed range, a start-up method called I/F is adopted. It can ensure PMSM start up in different load conditions. Unscented Kalman filter (UKF) is used for position estimation in middle to high-speed range. Meanwhile, considering saturation effect and filter delay, the varying inductance and filter delay compensation are used to improve position estimation accuracy. Based on the torque-power angle self-stabilization mechanism, a smooth switching method that transforms I/F starting method to UKF based closed loop sensorless control, is implemented to switch current and speed smoothly. The experimental results demonstrate the whole speed range sensorless control is effective. During the changing processes of load and speed, the steady state error of estimated position can be eliminated.

Key words： Permanent magnet synchronous motor sensorless control I/F start-up unscented Kalman filter saturation effect

Received: 24 October 2014 Published: 08 February 2017

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TM351

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	Wu Chun
	Qi Rong
	Li Bingqiang
	Ma Dongqi

Cite this article:

Wu Chun,Qi Rong,Li Bingqiang等. Whole Speed Range Sensorless Control of Permanent Magnet Synchronous Motor Considering Saturation Effect[J]. Transactions of China Electrotechnical Society, 2017, 32(2): 171-179.

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https://dgjsxb.ces-transaction.com/EN/ OR https://dgjsxb.ces-transaction.com/EN/Y2017/V32/I2/171

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