Compensation method of PWM inverter output voltage under low sampling‑to‑fundamental frequency ratio operating conditions

Su-In Jo; Wook-Jin Lee

Compensation method of PWM inverter output voltage under low sampling‑to‑fundamental frequency ratio operating conditions

Su-In Jo

Wook-Jin Lee

Vol. 23, No. 6, pp. 904-912, Jun. 2023

10.1007/s43236-023-00635-x

Abstract

This paper proposed a compensation method for the output voltage errors of a PWM inverter. Output voltage errors occur under low sampling-to-fundamental frequency ratio operating conditions, and they can be compensated by calculating a switching timing in which the average of the output voltage during one sampling period is equal to the voltage reference. The proposed compensation method for output voltage errors was described according to the PWM method and the voltage update method, and it was verified by simulation and experimental results. It was confi rmed that a lower sampling-to-fundamental frequency ratio results in a larger output voltage error. In addition, it was also confirmed that the proposed compensation method can completely remove these errors.

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Cite this article

[IEEE Style]

S. Jo and W. Lee, "Compensation method of PWM inverter output voltage under low sampling‑to‑fundamental frequency ratio operating conditions," Journal of Power Electronics, vol. 23, no. 6, pp. 904-912, 2023. DOI: 10.1007/s43236-023-00635-x.

[ACM Style]

Su-In Jo and Wook-Jin Lee. 2023. Compensation method of PWM inverter output voltage under low sampling‑to‑fundamental frequency ratio operating conditions. Journal of Power Electronics, 23, 6, (2023), 904-912. DOI: 10.1007/s43236-023-00635-x.