Comparison of modulation strategies for a cascaded H-bridge StatCom- Part 1: Theoretical background

C. Townsend, T. J. Summers, R. E. Betz

Research output: Chapter in Book/Conference paperConference paper

12 Citations (Scopus)

Abstract

Phase shifted carrier modulation has become an industry standard in its application to multi-level H-bridge StatComs. The technique uses the cancellation of harmonics within each phase-leg to significantly improve the harmonic performance relative to the switching frequency. The purpose of this paper is to investigate whether the practical implementation of the technique deteriorates the harmonic cancellation. The effects of non-uniform DC bus voltage, transient capacitor voltages and phase shift error are investigated. A comparison with alternative modulation strategies is developed in terms of a defined set of performance indicators. Part 2 of this paper applies the developed analysis to a particular StatCom and investigates the effect of increasing the StatCom level number.

Original languageEnglish
Title of host publicationProceedings - IECON 2010, 36th Annual Conference of the IEEE Industrial Electronics Society
Place of PublicationUSA
PublisherIEEE, Institute of Electrical and Electronics Engineers
Pages2019-2024
Number of pages6
ISBN (Print)9781424452262
DOIs
Publication statusPublished - 1 Dec 2010
Externally publishedYes
Event36th Annual Conference of the IEEE Industrial Electronics Society, IECON 2010 - Glendale, AZ, United States
Duration: 7 Nov 201010 Nov 2010

Conference

Conference36th Annual Conference of the IEEE Industrial Electronics Society, IECON 2010
CountryUnited States
CityGlendale, AZ
Period7/11/1010/11/10

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    Townsend, C., Summers, T. J., & Betz, R. E. (2010). Comparison of modulation strategies for a cascaded H-bridge StatCom- Part 1: Theoretical background. In Proceedings - IECON 2010, 36th Annual Conference of the IEEE Industrial Electronics Society (pp. 2019-2024). [5675257] IEEE, Institute of Electrical and Electronics Engineers. https://doi.org/10.1109/IECON.2010.5675257