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Disturbance rejection speed sensorless control of PMSMs based on full order adaptive observer

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Abstract

Speed sensorless control systems with a full order adaptive observer of the permanent magnet synchronous motor (PMSM) have received wide attention due to their advantages of simple structure, easy implementation and strong universality. However, they are sensitive to the load disturbances, which affects the speed performance of the control system. To solve this problem, this paper presents a disturbance rejection speed sensorless control of PMSMs based on full order adaptive observer to improve robustness against load disturbances. A load disturbance observer (LDO) is used to observe load disturbances, which feed-forward compensates the q-axis current to reduce the speed drop and accelerate the recovery time. Experimental results show that the proposed method has better anti-interference capability than full order adaptive speed sensorless control under the same steady-state performance.

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Acknowledgments

This work is supported by the Xi’an Key Laboratory of Power Electronic Devices and High Efficiency Power Conversion (2019219814SYS013CG035).

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Authors and Affiliations

  1. School of Electrical Engineering, Xi’an University of Technology, Xi’an, China

    Yanping Xu, Weiwen Yuan & Zhonggang Yin

  2. Xi’an Key Laboratory of Power Electronic Devices and High Efficiency Power Conversion, Xi’an, China

    Li Wang

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  1. Yanping Xu
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  2. Li Wang
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  3. Weiwen Yuan
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  4. Zhonggang Yin
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Correspondence to Yanping Xu.

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Xu, Y., Wang, L., Yuan, W. et al. Disturbance rejection speed sensorless control of PMSMs based on full order adaptive observer. J. Power Electron. 21, 804–814 (2021). https://doi.org/10.1007/s43236-021-00224-w

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  • DOI: https://doi.org/10.1007/s43236-021-00224-w

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