Abstract：This paper derives the analytical expressions of the modular multilevel converter (MMC) average switching frequency based on the inproved maximum sub-module voltage deviation,and analyzes the factors that affect the switching frequency.This paper can provide a theoretical guidance for the loss calculation and thermal design of MMC.The case studies are performed on a 46-level single-phase MMC under different operating conditions in Matlab/Simulink which proves the accuracy of this method.Meanwhile,a 9-level single-phase MMC laboratory prototype is built to verify the effectiveness of this method.
黄守道,廖武,高剑,黄晟,荣飞. 基于改进均压算法的模块化多电平变流器开关频率分析[J]. 电工技术学报, 2016, 31(13): 36-45.
Huang Shoudao,Liao Wu, Gao Jian, Huang Sheng ,Rong Fei. Switching Frequency Analysis of Modular Multilevel Converter Based on the Improved Capacitor Voltage Balancing Algorithm. Transactions of China Electrotechnical Society, 2016, 31(13): 36-45.
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2016, Vol. 31 
