基于改进式反电动势法的直线游标永磁电机无位置传感器控制

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Abstract Linear permanent magnet vernier (LPMV) motor has the advantages like high efficiency,low cost,high thrust force.Therefore,it is suitable for application of rail traffic with a long stoke.However,position sensor installed along the track costs too much.In the paper,the mover position estimated method based on stator back EMF is researched to reach sensorless control.Estimated mover position is calculated by stator flux angle min using load angle.Estimated mover speed is estimated by a phase locked loop (PLL) with estimated mover position inputted.The simulation and experiment is carried out based on system of LPMV motor.The results show that there is a high accuracy of estimation when speed of the prototype in the range from 0 to 1.5 m/s,mover position estimation is in error within plus and minus 5°,mover speed estimation is in error within plus and minus 0.01 m/s.Simulation and experiment results verify the feasibility and practicality of the mover position estimated method based on stator back electromotive force (EMF).

Key words： Linear motor mover position identification sensorless control phase locked loop back electromotive force (EMF)

Received: 19 August 2016 Published: 23 March 2017

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TM315

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	Jiao Shuai
	Zhao Wenxiang
	Qiu Xianqun
	Zhang Jian

Cite this article:

Jiao Shuai,Zhao Wenxiang,Qiu Xianqun等. Sensorless Control of Linear Permanent Magnet Vernier Motor Based on Improved Stator Back EMF[J]. Transactions of China Electrotechnical Society, 2016, 31(增刊2): 236-242.

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https://dgjsxb.ces-transaction.com/EN/ OR https://dgjsxb.ces-transaction.com/EN/Y2016/V31/I增刊2/236

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