Optimization of maximum torque output in the wide speed range of a PMSM traction control system

Weiwei Zhang; Fei Xiao; Jilong Liu; Zhiqin Mai; Chaoran Li

Optimization of maximum torque output in the wide speed range of a PMSM traction control system

Vol. 20, No. 1, pp. 152-162, Jan. 2020

10.1007/s43236-019-00008-3

Permanent magnet synchronous motor

Traction control system

Maximum torque output

Flux weakening control

Abstract

This paper introduces a permanent magnet synchronous motor maximum torque control method for the wide speed range of a traction control system. This method tracks the maximum torque per ampere operating point and generates a d-axis current command according to the injection of a high-frequency angle signal to the current. This method is parameter independent when looking for the maximum torque per ampere operating point. By not injecting any real signal to a permanent magnet synchronous motor, this method does not increase the amount of copper and iron losses resulting from real signal injection. To obtain a maximum torque output in a wide speed range, this method considers the maximum amplitude limits of voltage and current when the traction motor runs in a flux weakening control field. This method is also robust to current and voltage harmonics, speed mutations, and torque disturbances. Experiment and analysis are conducted on a permanent magnet synchronous motor traction control system prototype under various operating conditions to verify the effectiveness of this method.

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Cite this article

[IEEE Style]

W. Zhang, F. Xiao, J. Liu, Z. Mai, C. Li, "Optimization of maximum torque output in the wide speed range of a PMSM traction control system," Journal of Power Electronics, vol. 20, no. 1, pp. 152-162, 2020. DOI: 10.1007/s43236-019-00008-3.

[ACM Style]

Weiwei Zhang, Fei Xiao, Jilong Liu, Zhiqin Mai, and Chaoran Li. 2020. Optimization of maximum torque output in the wide speed range of a PMSM traction control system. Journal of Power Electronics, 20, 1, (2020), 152-162. DOI: 10.1007/s43236-019-00008-3.