This study proposes a new switched-capacitor-based multilevel inverter topology with a single dc voltage source. The proposed topology finds its suitability for renewable energy applications with low voltage. Seven-level (7L) output voltage is achieved across the load with triple-voltage gain employing 2 capacitors and 12 switches. Self-voltage balancing of capacitor voltages, parallel operation of capacitors during discharging mode, reduced voltage stress, and bipolar output voltage generation without using backend H-bridge are the major features of the proposed topology. Furthermore, a generalised structure of the proposed topology has also been discussed here. A comparison with other similar topologies with single-source 7L configuration has been carried out to show the advantages of the proposed topology with reduced switch count. Experimental results have been provided to verify the performance of the proposed topology with different operating conditions.

中文翻译：

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具有更高电压增益的基于开关电容器的升压多电平逆变器拓扑

这项研究提出了一种新的基于开关电容器的多电平逆变器拓扑结构，该拓扑结构具有单个直流电压源。所提出的拓扑结构适合低电压可再生能源应用。利用2个电容器和12个开关，利用三倍电压增益可在负载两端实现七电平（7L）输出电压。电容器电压的自电压平衡，在放电模式下电容器的并联运行，降低的电压应力以及在不使用后端H桥的情况下产生双极性输出电压是拟议拓扑的主要特征。此外，这里还讨论了所提出的拓扑的一般结构。已与具有单源7L配置的其他类似拓扑进行了比较，以显示所建议的拓扑的优势，减少了开关数量。