A novel voltage balancing modulation scheme used in cascaded H-bridge multilevel STATCOMs
Authors:
- 1 June 2013
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- p. 820-825
Abstract
This paper presents a novel voltage balancing modulation scheme based on the popular PSC-PWM strategy for cascaded multilevel STATCOMs. Analyzing on adjustments of the carriers in PSC-PWM, the proposed method more flexibly balances the DC-voltages from the charging process, and has no requirements for extra circuits or PI controllers. Finally, a 25-level cascaded STATCOM is constructed and tested. The proposed method solves the DC-voltage balancing problems that usually arise in the cascaded multilevel STATCOM operations, and its features and superiority are demonstrated.Keywords
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