MTPA‑based high‑frequency square wave voltage signal injection strategy for IPMSM control

Zeyu Zhang; Anwen Shen; Peihe Li; Xin Luo; Qipeng Tang

MTPA‑based high‑frequency square wave voltage signal injection strategy for IPMSM control

Vol. 21, No. 10, pp. 1461-1472, Oct. 2021

10.1007/s43236-021-00284-y

Interior Permanent Magnet Synchronous Motor (IPMSM)

Maximum torque per ampere (MTPA)

Highfrequency (HF) square wave voltage signal injection

equivalent model

Abstract

This paper proposes a high-frequency (HF) square wave voltage signal injection strategy for interior permanent magnet synchronous motor (IPMSM) maximum torque per ampere (MTPA) drives. Unlike previous methods, this strategy injects a square wave HF signal into the voltage directly regardless of the current loop bandwidth limitations. In addition, the injected frequency can surpass the cut-off frequency of the current loop. Therefore, the disturbance caused by the injected signal can be reduced. The process of MTPA operating point adjustment only needs to sample and analyze the current amplitude without additional digital filters. Thus, the dynamic response promotes, and avoids the extra hardware and calculation burden. To decrease the convergence time when the load changes rapidly, an equivalent mathematical model of an IPMSM is employed to provide prior current references. Both simulation and experimental results confirm the validity and feasibility of the proposed strategy.

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Cite this article

[IEEE Style]

Z. Zhang, A. Shen, P. Li, X. Luo, Q. Tang, "MTPA‑based high‑frequency square wave voltage signal injection strategy for IPMSM control," Journal of Power Electronics, vol. 21, no. 10, pp. 1461-1472, 2021. DOI: 10.1007/s43236-021-00284-y.

[ACM Style]

Zeyu Zhang, Anwen Shen, Peihe Li, Xin Luo, and Qipeng Tang. 2021. MTPA‑based high‑frequency square wave voltage signal injection strategy for IPMSM control. Journal of Power Electronics, 21, 10, (2021), 1461-1472. DOI: 10.1007/s43236-021-00284-y.