Pulse-Width-Control Method of Voltage-Source 3-Phase Inverter to Reduce Common-Mode Voltage

Shinji Sato; Fumiki Kato; Hiroshi Hozoji; Atsushi Yao; Kinuyo Watanabe; Hiroshi Sato; Hiroshi Yamaguchi

doi:10.1541/ieejjia.21006145

This article has now been updated. Please use the final version.

Pulse-Width-Control Method of Voltage-Source 3-Phase Inverter to Reduce Common-Mode Voltage

Shinji Sato, Fumiki Kato, Hiroshi Hozoji, Atsushi Yao, Kinuyo Watanabe, Hiroshi Sato, Hiroshi Yamaguchi

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Keywords: common-mode voltage, common-mode current, three-phase voltage source PWM inverter, PWM method

JOURNAL FREE ACCESS Advance online publication

Article ID: 21006145

DOI https://doi.org/10.1541/ieejjia.21006145

The final version of this article is now available: Vol. 11 (2022), No. 3 pp. 546-554

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Abstract

In this study, we propose a novel pulse-width modulation (PWM) method to reduces common-mode noise. The proposed method includes a 120-degree dormant two-phase modulated three-phase inverter that the comparative carrier of one of the two modulation phases. This configuration is easy to implement because it uses a triangular-wave carrier comparison. In an experiment using a three-phase inverter, the common-mode current was reduced by approximately 60%, and in particular, the carrier frequency component was reduced to approximately 1/10 that of the conventional sine-wave comparison PWM.

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