用于中压直流配电的模块化多电平高频直流变换器准方波调制

Ina direct current (dc) distribution network, the modular multilevel high-frequency dc converter (MDCC) can achieve electrical isolation, voltage conversion and power transmission between the lowand medium-voltage dc buses. In this paper, quasisquare-wave (QSW) modulation, which avoids the dv/dt stress problem and maintains a high dc voltage utilization, is applied in MDCC, and the mathematical mo...