International Conference Min-Gyo Jeong, Seok-Min Kim, and Kyo-Beum Lee, "Discontinuous PWM Scheme for a Modular Multilevel Converter with Advanced Switching Losses Reduction Ability," in Proc. ECCE Conf., Oct. 2017, pp. 4546–4551.
2017
본문
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.
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