基于复合二阶广义积分器的永磁同步电机转子位置与转速估计

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Abstract Traditional back-EMF observer based on the state estimation causes a phase lag,which will introduce mean deviation of estimated angle for permanent magnet synchronous motor(PMSM)rotor position estimation.This paper proposed an improved back-electromotive force(back-EMF)observer with zero-phase lag.In order to eliminate harmonics and high frequency noises caused by the control algorithm,dead time effect,load disturbance,and other effects,the Second Order Generalized Integrator-Frequency Locked Loop(SOGI-FLL)algorithm was introduced to PMSM position and speed estimation areas.In this paper,Composite SOGI-FLL(CSOGI-FLL)algorithm was proposed to improve the dynamic performance of position and speed estimation and to enhance the capability to reject harmonics and noises.Finally,we set up an experimental platform and verified the effectiveness of the method through steady-state and dynamic experiments.

Key words： Permanent magnet synchronous motor(PMSM) position estimate speed estimate back-electromotive force observer second-order generalized integrator

Received: 27 January 2016 Published: 17 April 2017

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TM341

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	Zhou Zhen
	Li Changlei
	Wang Yong

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Zhou Zhen,Li Changlei,Wang Yong. Position and Speed Estimation for a Permanent Magnet Synchronous Motor Rotor Using Composite Second Order Generalized Integrator[J]. Transactions of China Electrotechnical Society, 2017, 32(7): 59-66.

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https://dgjsxb.ces-transaction.com/EN/ OR https://dgjsxb.ces-transaction.com/EN/Y2017/V32/I7/59

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