根据该通用拓扑结构所提供的自由度，构造出了几种新型的组合拓扑结构。
According to the free degree of this universal structure, several new hybrid topologies are constructed.
仿真结果验证了组合拓扑结构及组合调制策略的有效性，为多电平逆变器组合拓扑结构的实际应用奠定了基础。
The simulation results proved that the validity of hybrid structure and corresponding modulation strategies, it lays the foundation of practical application on hybrid multilevel inverter structure.
同时，基于传统的应用于多电平逆变器的多载波spwm调制策略，提出了对应于组合拓扑结构的组合调制策略。
At the same time, based on conventional modulation strategies-multi-carrier SPWM applied on multilevel inverter, hybrid modulation strategies are introduced corresponding to hybrid structure.
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