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.
LI Yao
,
XU Lie
,
LI Yongdong
. Voltage balancing in a 1-level modular multilevel matrix converter[J]. Journal of Tsinghua University(Science and Technology), 2017
, 57(11)
: 1220
-1227
.
DOI: 10.16511/j.cnki.qhdxxb.2017.21.031
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