Switched capacitor multilevel inverter (SCMLI) with reduced components is attractive for higher number of voltage levels due to less implementation complexity and low cost. In this study, a new family of hybrid SCMLI for high frequency power distribution system is presented to eliminate the intermediate power conversion. Firstly, a five-level SCMLI employing a single voltage source is proposed, which is further extended to nine-level (9L) with its operation. Further extension/enhancement of the proposed 9L-SCMLI for generating a higher number of voltage levels with reduced number of components is achieved on the basis of structural modification. The mathematical analysis for determination of capacitance, power loss analysis and comparative analysis has been provided in detail. A comprehensive comparison with other similar topologies is also provided to highlight the merits of the proposed topology. Simulation and experimental results are discussed for various dynamic load conditions with different output frequencies to validate the suitability of the proposed SCMLI for various high-frequency AC applications, such as renewable energy systems, microgrids, electric vehicles and so on.

中文翻译：

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具有自平衡功能的高频配电系统开关电容器多电平逆变器

具有更少组件的开关电容器多电平逆变器（SCMLI）具有较低的实现复杂性和低成本，因此对于更高数量的电压电平具有吸引力。在这项研究中，提出了一种用于高频配电系统的新型混合SCMLI系列，以消除中间功率转换。首先，提出了采用单电压源的五级SCMLI，并随着其工作进一步扩展到九级（9L）。在结构修改的基础上，实现了对所提出的9L-SCMLI的进一步扩展/增强，以生成更多数量的电压电平，而组件数量却减少了。详细介绍了用于确定电容的数学分析，功率损耗分析和比较分析。还提供了与其他类似拓扑的全面比较，以突出提出的拓扑的优点。讨论了具有不同输出频率的各种动态负载条件的仿真和实验结果，以验证所提出的SCMLI对各种高频AC应用（如可再生能源系统，微电网，电动汽车等）的适用性。