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Mathematical Analysis and Experiment Validation of Modular Multilevel Converters
Zhang, Yushu,Adam, Grain Philip,Lim, Tee-Chong,Finney, Stephen J.,Williams, Barry W. The Korean Institute of Power Electronics 2012 JOURNAL OF POWER ELECTRONICS Vol.12 No.1
This paper describes operating and capacitor voltage balancing of the modular multilevel converter. The paper focuses on sizing of the cell capacitor and establishes approximate expressions for the capacitor voltage. Simulations and experiments results obtained from three-level modular converter are used to demonstrate its viability in medium voltage applications. It is shown that the modular converter can operate over the full modulation index linear range independent of load power factor.
Mathematical Analysis and Experiment Validation of Modular Multilevel Converters
Yushu Zhang,Grain Philip Adam,Tee Chong Lim,Stephen J. Finney,Barry W. Williams 전력전자학회 2012 JOURNAL OF POWER ELECTRONICS Vol.12 No.1
This paper describes operating and capacitor voltage balancing of the modular multilevel converter. The paper focuses on sizing of the cell capacitor and establishes approximate expressions for the capacitor voltage. Simulations and experiments results obtained from three-level modular converter are used to demonstrate its viability in medium voltage applications. It is shown that the modular converter can operate over the full modulation index linear range independent of load power factor.
Analysis and Experiment Validation of a Three-level Modular Multilevel Converters
Yushu. Zhang,G.P. Adam,T.C.Lim,Stephen J. Finney,B.W. Williams 전력전자학회 2011 ICPE(ISPE)논문집 Vol.2011 No.5
This paper presents analysis of the effect of modulation strategy on the modular multilevel converter including sub-module capacitor size calculation, capacitor ripple and capacitor balancing strategy. Simulation and experimental results validate the analysis presented and some features such as effective switching frequency per device and current and voltage stress on each device compared to other methods, are addressed.