Simultaneous Estimation of Current and Speed of Permanent Magnet Synchronous Motor Based on an Improved Dual Second-Order Observer

Guorong Zhu, Yihong Zheng, Xiangtian Deng and Jianghua Lu ()
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Guorong Zhu: School of Automation, Wuhan University of Technology, Wuhan 430070, China
Yihong Zheng: School of Automation, Wuhan University of Technology, Wuhan 430070, China
Xiangtian Deng: School of Automation, Wuhan University of Technology, Wuhan 430070, China
Jianghua Lu: School of Information Science and Engineering, Wuhan University of Science and Technology, Wuhan 430081, China

Energies, 2023, vol. 16, issue 20, 1-23

Abstract: The third-order state observer implements the decoupled control and the accurate estimation of the d-axis current, q-axis current, and rotor speed of the permanent magnet synchronous motor (PMSM). Its complex calculation, however, is a challenge for most digital controllers in practical applications. The authors proposed an improved dual second-order observer based on the Kalman filter. A 0.88 Nm, 1500 rpm prototype was built. The simulation and experimental results prove the effectiveness and practicability of the proposed method.

Keywords: permanent magnet synchronous motor; current control; state observer; disturbance observer; Kalman filter (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
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