Decoupling of the Secondary Saliencies in Sensorless PMSM Drives using Repetitive Control in the Angle Domain

Chun Wu; Zhe Chen; Rong Qi; Ralph Kennel

Decoupling of the Secondary Saliencies in Sensorless PMSM Drives using Repetitive Control in the Angle Domain

Vol. 16, No. 4, pp. 1375-1386, Jul. 2016

10.6113/JPE.2016.16.4.1375

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Abstract

To decouple the secondary saliencies in sensorless permanent magnet synchronous machine (PMSM) drives, a repetitive control (RC) in the angle domain is proposed. In this paper, the inductance model of a concentrated windings surface-mounted PMSM (cwSPMSM) with strong secondary saliencies is developed. Due to the secondary saliencies, the estimated position contains harmonic disturbances that are periodic relative to the angular position. Through a transformation from the time domain to the angle domain, these varying frequency disturbances can be treated as constant periodic disturbances. The proposed angle-domain RC is plugged into an existing phase-locked loop (PLL) and utilizes the error of the PLL to generate signals to suppress these periodic disturbances. A stability analysis and parameter design guidelines of the RC are addressed in detail. Finally, the proposed method is carried out on a cwSPMSM drive test-bench. The effectiveness and accuracy are verified by experimental results.

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Cite this article

[IEEE Style]

C. Wu, Z. Chen, R. Qi, R. Kennel, "Decoupling of the Secondary Saliencies in Sensorless PMSM Drives using Repetitive Control in the Angle Domain," Journal of Power Electronics, vol. 16, no. 4, pp. 1375-1386, 2016. DOI: 10.6113/JPE.2016.16.4.1375.

[ACM Style]

Chun Wu, Zhe Chen, Rong Qi, and Ralph Kennel. 2016. Decoupling of the Secondary Saliencies in Sensorless PMSM Drives using Repetitive Control in the Angle Domain. Journal of Power Electronics, 16, 4, (2016), 1375-1386. DOI: 10.6113/JPE.2016.16.4.1375.