Abstract
Due to the low switching frequency and excellent harmonic performance, selective harmonic eliminated pulse width modulation (SHEPWM) is very suitable for high power grid-connected converters. However, most of the research on SHEPWM so far is based on an ideal grid, which ignores the influences of the unbalanced and harmonic grid voltages that turn out to be rather significant and have limited the engineering application of SHEPWM. Based on a three-level grid connected converter topology, this paper studies the characteristics of SHEPWM under a non-ideal grid. An improved modulation algorithm and a novel filter design method are proposed to solve the problems caused by the unbalanced grid and harmonically distorted grid conditions, respectively. Simulation results confirmed the effectiveness of the method proposed.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
