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Modulation, Losses, and Semiconductor Requirements of Modular Multilevel Converters

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4 Author(s)
Steffen Rohner ; Dresden University of Technology, Dresden, Germany ; Steffen Bernet ; Marc Hiller ; Rainer Sommer

This paper describes the operation of modular multilevel converter, an emerging and highly attractive topology for medium- and high-voltage applications. A new pulsewidth-modulation (PWM) scheme for an arbitrary number of voltage levels is introduced and evaluated. On the basis of this PWM scheme, the semiconductor losses are calculated, and the loss distribution is illustrated.

Published in:

IEEE Transactions on Industrial Electronics  (Volume:57 ,  Issue: 8 )