Discontinuous PWM scheme for a modular multilevel converter with advanced switching losses reduction ability

This paper presents discontinuous pulse width modulation (DPWM) scheme for a modular multilevel converter (MMC) to achieve an advanced switching losses reduction. The MMC is considered to be one of the most attractive multilevel topology for high-power applications because of the features of its hig...

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Bibliographic Details
Published in2017 IEEE Energy Conversion Congress and Exposition (ECCE) pp. 4546 - 4551
Main Authors Min-Gyo Jeong, Seok-Min Kim, Kyo-Beum Lee
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.10.2017
Subjects
60° DPWM method
Capacitors
discontinuous pwm
half-bridge sub module
Mathematical model
modular multilevel converter
Pulse width modulation
Simulation
Switches
Switching loss
switching losses
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Summary:This paper presents discontinuous pulse width modulation (DPWM) scheme for a modular multilevel converter (MMC) to achieve an advanced switching losses reduction. The MMC is considered to be one of the most attractive multilevel topology for high-power applications because of the features of its high power quality, modularity, and availability. However, the MMC has large switching losses because of the huge number of switching devices. To reduce the switching losses, the novel DPWM scheme with additional clamping intervals is proposed in this paper. Furthermore, a rotation scheme for voltage balancing and power distribution of sub modules (SMs) is also proposed. The effectiveness of the proposed switching losses reduction ability is verified by simulation results.
DOI:10.1109/ECCE.2017.8096779