Robust Predictive Speed Control for SPMSM Drives Based on Extended State Observers

Yanping Xu; Yongle Hou; Zehui Li

Robust Predictive Speed Control for SPMSM Drives Based on Extended State Observers

Yanping Xu

Yongle Hou

Zehui Li

Vol. 19, No. 2, pp. 497-508, Mar. 2019

10.6113/JPE.2019.19.2.497

Cost function

Extended state observer (ESO)

Model mismatch

Permanent magnet synchronous motor (PMSM)

Predictive speed control (PSC)

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Abstract

The predictive speed control (PSC) strategy can realize the simultaneous control of speed and current by using one cost function. As a model-based control method, the performance of the PSC is vulnerable to model mismatches such as load torque disturbances and parameter uncertainties. To solve this problem, this paper presents a robust predictive speed control (RPSC) strategy for surface-mounted permanent magnet synchronous motor (SPMSM) drives. The proposed RPSC uses extended state observers (ESOs) to estimate the lumped disturbances caused by load torque changes and parameter mismatches. The observer-based prediction model is then compensated by using the estimated disturbances. The introduction of ESOs can achieve robustness against predictive model uncertainties. In addition, a modified cost function is designed to further suppress load torque disturbances. The performance of the proposed RPSC scheme has been corroborated by experimental results under the condition of load torque changes and parameter mismatches.

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Cite this article

[IEEE Style]

Y. Xu, Y. Hou, Z. Li, "Robust Predictive Speed Control for SPMSM Drives Based on Extended State Observers," Journal of Power Electronics, vol. 19, no. 2, pp. 497-508, 2019. DOI: 10.6113/JPE.2019.19.2.497.

[ACM Style]

Yanping Xu, Yongle Hou, and Zehui Li. 2019. Robust Predictive Speed Control for SPMSM Drives Based on Extended State Observers. Journal of Power Electronics, 19, 2, (2019), 497-508. DOI: 10.6113/JPE.2019.19.2.497.