Signal injection method without torque ripple for stator winding temperature estimation of surface‑mounted PMSM drive systems

Jie Fang; Shichuan Ding; Yining Sun; Jun Hang

Signal injection method without torque ripple for stator winding temperature estimation of surface‑mounted PMSM drive systems

Vol. 20, No. 6, pp. 1504-1513, Nov. 2020

10.1007/s43236-020-00153-0

Thermal monitoring

Signal injection

Stator resistance

Permanent magnet synchronous machine

Abstract

A signal injection method without torque ripple is presented to estimate the stator winding temperature of a surface-mounted permanent magnet synchronous machine (PMSM), where the temperature is estimated based on the stator resistance. First, the current signal (Δid*) is injected into the current control loop to produce DC current offsets used to calculate the stator resistance, where the injected signal cannot lead to extra torque ripple. Then the temperature can be obtained based on the relationship between the stator winding temperature and the stator resistance. Finally, the proposed method is validated by simulation and experimental results. In addition, no extra equipment is needed for the proposed method.

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Cite this article

[IEEE Style]

J. Fang, S. Ding, Y. Sun, J. Hang, "Signal injection method without torque ripple for stator winding temperature estimation of surface‑mounted PMSM drive systems," Journal of Power Electronics, vol. 20, no. 6, pp. 1504-1513, 2020. DOI: 10.1007/s43236-020-00153-0.

[ACM Style]

Jie Fang, Shichuan Ding, Yining Sun, and Jun Hang. 2020. Signal injection method without torque ripple for stator winding temperature estimation of surface‑mounted PMSM drive systems. Journal of Power Electronics, 20, 6, (2020), 1504-1513. DOI: 10.1007/s43236-020-00153-0.