Discontinuous PWM‑based common‑mode voltage suppression method for three‑phase inverter

Jin Chai; Weisheng Wang; Tong Liu

Discontinuous PWM‑based common‑mode voltage suppression method for three‑phase inverter

Jin Chai

Weisheng Wang

Tong Liu

Vol. 25, No. 2, pp. 250-259, Feb. 2025

10.1007/s43236-024-00897-z

Inverter control

Common-mode voltage

Discontinuous pulse-width modulation

Switching frequency

Abstract

In high-voltage and high-power applications, continuous pulse-width modulation methods (CPWM) suffer from reduced inverter efficiency due to high switching frequency, and the common-mode voltage (CMV) generated can also cause electromagnetic interference and current harmonics. This paper proposes a discontinuous pulse-width modulation (DPWM)-based CMV suppression method to suppress CMV and reduce switching losses simultaneously. CMV values associated with various reference voltage vectors are analyzed first, and then CMV suppression conditions in different sectors are calculated. The proposed control strategy can correct the modulation wave of DPWM easily using a look-up table, which lists the suppression conditions calculated above to decrease the computation burden, thus suppressing CMV while simultaneously reducing switching losses. The strategy exhibits universality across various types of DPWM. Simulations and experiments confirmed its effectiveness.

Statistics

Show / Hide Statistics

Cumulative Counts from September 30th, 2019
Multiple requests among the same browser session are counted as one view. If you mouse over a chart, the values of data points will be shown.

Cite this article

[IEEE Style]

J. Chai, W. Wang, T. Liu, "Discontinuous PWM‑based common‑mode voltage suppression method for three‑phase inverter," Journal of Power Electronics, vol. 25, no. 2, pp. 250-259, 2025. DOI: 10.1007/s43236-024-00897-z.

[ACM Style]

Jin Chai, Weisheng Wang, and Tong Liu. 2025. Discontinuous PWM‑based common‑mode voltage suppression method for three‑phase inverter. Journal of Power Electronics, 25, 2, (2025), 250-259. DOI: 10.1007/s43236-024-00897-z.