Abstract：A modular multilevel matrix converter (MMMC) can convert three phase AC input to three phase AC output. The converters use four-quadrant operation with good modularity and low frequency performance for high-voltage high-power variable frequency drive systems. MMMC designs include the topology without branch inductors and the topology with branch inductor. The MMMC without branch inductors are smaller and lighter.This paper describes a 1-level MMMC with the voltage of the H-bridge branches calculated numerically. The switching times are optimized to balance the voltages in the H-bridge branches. Tests show the effectiveness of the voltage balancing strategy.
李遥, 许烈, 李永东. 单级模块化多电平矩阵变换器支路间电容电压平衡[J]. 清华大学学报（自然科学版）, 2017, 57(11): 1220-1227.
LI Yao, XU Lie, LI Yongdong. Voltage balancing in a 1-level modular multilevel matrix converter. Journal of Tsinghua University(Science and Technology), 2017, 57(11): 1220-1227.
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2017, Vol. 57 
