A switched-inductor quasi-Z-source inverter (SI-qZSI) exhibits a higher gain than a quasi-Z-source inverter (qZSI) while keeping continuous input current. Like renewable power generation systems that result in low input voltage, SI-qZSI exhibits boosting ability that may not be adequate in some cases. A voltage-lifting unit can be formed by alternating one of the diodes in the switch inductor unit. A high step-up topology, such as qZSI with voltage-lifting unit (qZSI-VL), can be derived. The boosting factor of qZSI-VL can be enhanced further by retaining all the merits of the SI-qZSI. The overall conduction loss can be reduced under the same output and input voltage for the qZSI-VL, thereby enhancing efficiency. In this study, the analysis of the qZSI-VL and its operating principle are explained. The characteristic comparison of qZSI-VL with the SI-qZSI and qZSI is discussed in detail. Finally, the prototypes of qZSI-VL and SI-qZSI are designed in the lab. Simulation and experiments are performed to verify the analysis.

开关电感准 Z 源反相器 (SI-qZSI) 在保持连续输入电流的同时表现出比准 Z 源反相器 (qZSI) 更高的增益。与导致低输入电压的可再生能源发电系统一样，SI-qZSI 具有在某些情况下可能不够用的升压能力。通过交替开关电感单元中的一个二极管可以形成升压单元。可以推导出高升压拓扑，例如带有电压提升单元的 qZSI (qZSI-VL)。通过保留 SI-qZSI 的所有优点，可以进一步增强 qZSI-VL 的增强因子。在相同的输出和输入电压下，qZSI-VL 可以降低整体传导损耗，从而提高效率。在本研究中，解释了 qZSI-VL 的分析及其工作原理。详细讨论了 qZSI-VL 与 SI-qZSI 和 qZSI 的特性比较。最后在实验室设计了qZSI-VL和SI-qZSI的原型。进行模拟和实验以验证分析。