Switched-capacitor multi-level inverters (SCMLIs) have become more popular in recent years due to their unique advantage of voltage boosting capability. A seven-level triple boost SCMLI is proposed in this paper. The proposed topology consists of 10 switches, one diode, three self-balanced capacitors, and a DC source. The voltage stress on each switch is less than or equal to twice the input DC source voltage. Further, 4 out of 10 switches are switched at the fundamental frequency. The maximum conducting switches at each level is less than or equal to 4. The capacitors are self-balanced without using any voltage sensors or external circuits. A detailed comparison has been given with the existing seven-level triple boost SCMLI to show the superiority of the proposed topology. The seven-level triple boost SCMLI is simulated using MATLAB/SIMULINK tool. The proposed model is verified at low- and high-frequency switching, sudden changes in output load, and different modulation index values. The results are verified experimentally with the help of a prototype model developed in the laboratory using dSPACE 1104.

中文翻译：

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七电平三重升压自平衡开关电容逆变器

近年来，开关电容多电平逆变器 (SCMLI) 因其升压能力的独特优势而变得越来越流行。本文提出了一种七级三重升压 SCMLI。建议的拓扑结构包括 10 个开关、一个二极管、三个自平衡电容器和一个直流电源。每个开关上的电压应力小于或等于输入直流电源电压的两倍。此外，10 个开关中有 4 个以基频开关。每级最大导通开关小于或等于4个。电容器自平衡，无需使用任何电压传感器或外部电路。与现有的七级三重升压 SCMLI 进行了详细比较，以显示所提出拓扑的优越性。七级三重升压 SCMLI 使用 MATLAB/SIMULINK 工具进行仿真。所提出的模型在低频和高频切换、输出负载突然变化和不同调制指数值下得到验证。在实验室使用 dSPACE 1104 开发的原型模型的帮助下，通过实验验证了结果。