A half-bridge-based impedance-source inverter with two T-shaped coupled inductors is proposed in this article. Unlike the conventional half-bridge structure, the proposed topology can generate a zero-voltage level at its output stage. First, the proposed configuration and its modulation method are described, which will analyze the topology's various operational modes. Second, the boost factor is determined, and a way to design the necessary passive devices is found. Third, a power loss breakdown study is investigated in order to devise a solution to improve the efficiency of the proposed structure. Fourth, various comparisons show the benefits and drawbacks of the presented design. These comparisons show that the proposed topology can provide a high boost factor when coupled inductors are used. Furthermore, it has reduced voltage stresses on the components, resulting in a smaller size and lower cost. Finally, the experimental results are obtained by employing a prototype designed by the methodology presented in this article. These results are used as a benchmark to determine whether the proposed topology works well. In addition, the power loss analysis and efficiency comparison are displayed.

中文翻译：

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耦合电感辅助高压增益半桥 Z 源逆变器

本文提出了一种带有两个 T 形耦合电感的基于半桥的阻抗源逆变器。与传统的半桥结构不同，所提出的拓扑可以在其输出级产生零电压电平。首先，描述了所提出的配置及其调制方法，这将分析拓扑的各种操作模式。其次，确定了升压系数，并找到了设计必要的无源器件的方法。第三，研究了功率损耗击穿研究，以设计一种解决方案来提高所提出结构的效率。第四，各种比较显示了所提出设计的优缺点。这些比较表明，当使用耦合电感器时，所提出的拓扑可以提供高升压因数。此外，它降低了元件上的电压应力，从而缩小了尺寸并降低了成本。最后，通过采用本文介绍的方法设计的原型获得实验结果。这些结果用作确定所提出的拓扑结构是否有效的基准。此外，还显示了功率损耗分析和效率比较。