In this paper, for high and low numbers of voltage levels, two new generalized multilevel converters are introduced, which comprise a six‐switch H‐bridge and several switched‐source units. Switched‐source units consist of bidirectional and unidirectional switches along with a dc voltage source. The two proposed topologies are compared with topologies based on the six‐switch H‐bridge, conventional H‐bridge, and some new topologies regarding the number of switches, dc voltage sources, gate drivers, and per‐unit voltage block on switches. The comparison results reveal the superiority of the proposed topology with low number of voltage level (LNL) and proposed topology with high number of voltage level (HNL) regarding the per‐unit voltage block and number of elements, respectively. Thus, the proposed topologies lead to reduction cost and weight of system. Furthermore, for high number of levels, HNL topology is more appropriate than LNL topology and vice versa. The performances of the proposed 15‐level LNL and 61‐level topologies are simulated by MATLAB, and proposed 15‐level LNL topology in producing all voltage levels is validated by experimental results.

中文翻译：

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基于六开关H桥的非对称模块化多电平逆变器的新广义拓扑

在本文中，针对高电压电平和低电压电平，引入了两个新的通用多电平转换器，其中包括一个六开关H桥和多个开关电源单元。开关电源单元由双向和单向开关以及一个直流电压源组成。将这两种拟议的拓扑与基于六开关H桥，常规H桥以及一些有关开关数量，直流电压源，栅极驱动器和开关上的单位电压块的新拓扑进行了比较。比较结果表明，就单位电压块和元件数量而言，建议的拓扑结构在低电压电平（LNL）和建议的拓扑结构在高电压电平（HNL）方面具有优越性。从而，所提出的拓扑结构可降低系统成本和重量。此外，对于大量的级别，HNL拓扑比LNL拓扑更合适，反之亦然。拟议的15级LNL和61级拓扑的性能由MATLAB进行了仿真，并通过实验结果验证了拟议的15级LNL拓扑在产生所有电压电平时的性能。