Carrier multi-modulation used for the common-mode voltage suppression in a three-phase inverter

Jin Huang,Haixia Shi

doi:10.1109/ecce.2015.7309954

Carrier multi-modulation used for the common-mode voltage suppression in a three-phase inverter

Jin Huang, Haixia Shi

https://doi.org/10.1109/ecce.2015.7309954

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Publication Date: Sep 1, 2015

Citations: 1

Affiliation: Huazhong University of Science and Technology

#Common-mode Voltage #Three-phase Inverter + Show 8 more

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Abstract

The output common-mode (CM) voltage will bring many negative effects in a three-phase inverter, which is controlled by the sinusoidal pulse width modulation (SPWM) method. The carrier multi-modulation (CMM) scheme, which is composed of the carrier peak position modulation (CPPM) technology and the carrier 2-frequency-modulation (C2FM) technology, is presented to suppress the CM voltage (CMV) in this paper. By using the CPPM strategy of CMM, the CM peak voltage is reduced in the time domain. By using the C2FM strategy of CMM, in which the carrier-frequency is modulated twice, the peak harmonics of the CMV are lowered optimally in the frequency domain. The feasibility and validity of the CMM scheme are proved by experiment results in a three-phase inverter.

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