Publication Type
Conference Paper
Book Title
Proceedings of the IEEE Energy Conversion Congress and Exposition
Publication Date
Page Numbers
2286 to 2293
Publisher Location
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
Conference Date
-
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.
