A New Scheme for Nearest Level Control with Average Switching Frequency Reduction for Modular Multilevel Converters

This paper proposes a new NLC (Nearest Level Control) scheme for MMCs (Modular Multilevel Converters), which offers voltage ripple reductions in the DC capacitor of the SM (Sub-Module), the output voltage harmonics, and the switching losses. The feasibility of the proposed NLC was verified through computer simulations. Based on these simulation results, a hardware prototype of a 10kVA, DC-1000V MMC was manufactured in the lab. Experiments were conducted to verify the feasibility of the proposed NLC in an actual hardware environment. The experimental results were consistent with the results obtained from the computer simulations.

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Cite this article

[IEEE Style]

Y. Park, D. Kim, J. Kim, B. Han, "A New Scheme for Nearest Level Control with Average Switching Frequency Reduction for Modular Multilevel Converters," Journal of Power Electronics, vol. 16, no. 2, pp. 522-531, 2016. DOI: 10.6113/JPE.2016.16.2.522.

[ACM Style]

Yong-Hee Park, Do-Hyun Kim, Jae-Hyuk Kim, and Byung-Moon Han. 2016. A New Scheme for Nearest Level Control with Average Switching Frequency Reduction for Modular Multilevel Converters. Journal of Power Electronics, 16, 2, (2016), 522-531. DOI: 10.6113/JPE.2016.16.2.522.