带误差补偿的高频信号注入永磁同步电机无传感器控制策略

doi:10.19595/j.cnki.1000-6753.tces.181205

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Abstract Sensorless control of permanent magnet synchronous motor (PMSM) is usually based on high frequency signal injection at low speed or zero speed. The rotation high frequency injection method identifies the rotor position, but its accuracy is easily affected by the controller sampling and calculation delay, the inverter output and waveform distortion delay, and the delay of the filter during the signal demodulation. On the basis of theoretical deduction and analysis of rotor position deviation, this paper proposes that the phase deviations produced by signal delay can be divided into two types for analysis and compensation. Subsequently, a control strategy for rotating high frequency signal injection is proposed. This strategy can effectively reduce the phase deviation caused by signal delay and improve the accuracy of rotor position estimation. The delay caused by rotor position deviation is changing with time, and the proposed strategy has the characteristics of on-line computation and real-time compensation. Therefore, the on-line detection accuracy of rotor position can be improved. Experiments verify the correctness of the theoretical analysis and the effectiveness of the strategy.

Key words： Permanent magnet synchronous motor (PMSM) high frequency signal injection method phase deviation rotor position error compensation sensorless control strategy

Received: 11 July 2018 Published: 18 November 2019

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TM351

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	Guo Lei
	Yang Zhongpin
	Lin Fei

Cite this article:

Guo Lei,Yang Zhongpin,Lin Fei. A Sensorless Control Strategy for High Frequency Signal Injection Permanent Magnet Synchronous Motor with Error Compensation[J]. Transactions of China Electrotechnical Society, 2019, 34(21): 4458-4466.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.181205 OR https://dgjsxb.ces-transaction.com/EN/Y2019/V34/I21/4458

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