Common-mode voltage injection control method and apparatus for inverter

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United States of America

PATENT NO 12224682
APP PUB NO 20230147775A1
SERIAL NO

18154277

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Abstract

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A common-mode voltage injection control method and apparatus for an inverter. For the method and apparatus, a common-mode voltage for a DPWM mode is calculated based on three-phase port voltages and an output power command; a common-mode voltage for an MPC modulation mode is calculated based on the direct current bus voltage, the three-phase port voltages, and the output power command; a modulation proportion is determined based on a maximum phase voltage peak value of the three-phase port voltages, the direct current bus voltage, and a power factor of the output power command; and a common-mode injection voltage is generated based on the common-mode voltage for the DPWM mode, the modulation proportion, and the common-mode voltage for the MPC modulation mode.

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Patent Owner(s)

  • HUAWEI DIGITAL POWER TECHNOLOGIES CO., LTD.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Dong, Peng Shanghai, CN 35 5
Li, Junjie Shanghai, CN 94 166
Xin, Kai Shanghai, CN 91 348
Yu, Xinyu Shanghai, CN 48 233

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