October 2019

Conference Paper

Harmonic Analysis of Common-mode Reduction Modulation for Three-level Inverter

By:
Chen, Ruirui; Niu, Jiahao; Gui, Handong; Zhang, Zheyu; Wang, Fei ; Tolbert, Leon M; Costinett, Daniel J; Blalock, Benjamin J; Choi, Benjamin
Page Number:
2286-2293
Book Title:
Proceedings of the IEEE Energy Conversion Congress and Exposition
Publication Date:
October 2019
Publisher Location:
IEEE, New York, United States of America
Conference Name:
IEEE Energy Conversion Congress and Exposition (IEEE ECCE 2019)
Conference Location:
Baltimore, Maryland, United States of America
Conference Sponsor:
IEEE
View DOI Listing:
https://doi.org/10.1109/ECCE.2019.8912187

Abstract

This paper presents harmonic analysis of common-mode reduction (CMR) modulation for three-level voltage source inverters. The analytical model to calculate the harmonics of CMR modulation with arbitrary PWM sequence is developed. The impact of alternative PWM sequences of CMR modulation on harmonics is investigated. New three-state and four-state PWM sequences of CMR are proposed which spread the energy centered in the carrier frequency in the conventional CMR, and thus reduce the voltage peaks in frequency domain. Experiments are conducted on a three-level neutral point clamped inverter. Experiment results verify the developed analytical model and harmonic analysis.