基于两段卡尔曼滤波器的内置式永磁电机观测器设计

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Abstract The precise stator resistance is very important when designing high performance sensorless controller for Interior permanent magnet synchronous motor(IPMSM). Using extended Kalman filter(EKF) to estimate rotor position, speed and stator resistance will be calculated with high order operational matrix and make the real system be heavy computation. To solve this problem, a novel Kalman control strategy by using nonlinear two-stage extended Kalman filter(NTSEKF) is proposed. Based on coordinate transformation, the main idea of NTSEKF is to decouple the EKF into two parallel low order filters. The NTSEKF is decomposition operation of EKF, and both of them are mathematically equivalent. Theoretical analysis and experimental results show that the novel strategy can reduce the number of arithmetic operations compared to the conventional extended Kalman filter and keep good performance of identification.

Key words： Interior permanent magnet synchronous motor sensorless control extended Kalman filter nonlinear two-stage extended Kalman filter

Received: 14 June 2013 Published: 05 November 2014

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TM315

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	Articles by authors
	Yi Boyu
	Kang Longyun
	Tao Sinian
	Zhao Xianxian
	Guo Hongxia

Cite this article:

Yi Boyu,Kang Longyun,Tao Sinian等. Observer Design of Interior Permanent Magnet Synchronous Motors Based on Two-Stage Kalman Filter[J]. Transactions of China Electrotechnical Society, 2014, 29(9): 110-118.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2014/V29/I9/110

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