A novel semi-isolated high step-up double-input converter with current-fed inputs is introduced in this study. The proposed converter can operate in double-input mode and single-input mode. It can manage the collected power from both inputs effectively. In addition, it makes a gentle transition between the modes, without the need for an abrupt change in pulse pattern, and does not utilise a breaker switch. Meanwhile, the converter preserves soft-switching as well as a few number of semiconductors (three switches and three diodes). These items have improved the efficiency of the converter to 94.5%. Moreover, it is a high-voltage gain (more than 13). Also, both input ports are current-fed, so the input currents are smoothed. These features make the converter compatible with hybrid renewable energy applications. Furthermore, all components are engaged in both modes, which results in an improved component's utilisation factor. A thorough analysis has been conducted to prove the characteristics mentioned above of the proposed converter. Theoretical analysis has been verified by simulation and experimental results of a 200 W prototype.

中文翻译：

---

具有软开关和减少半导体数量的高升压双输入转换器

本研究介绍了一种新颖的具有电流馈入输入的半隔离高升压双输入转换器。提出的转换器可以在双输入模式和单输入模式下工作。它可以有效地管理从两个输入端收集的功率。此外，它可以在模式之间进行平稳过渡，而无需突然改变脉冲模式，并且不使用断路器开关。同时，该转换器保留软开关以及少量半导体（三个开关和三个二极管）的功能。这些项目已将转换器的效率提高到94.5％。而且，它是一个高压增益（大于13）。另外，两个输入端口均采用电流供电，因此输入电流得以平滑。这些功能使转换器与混合可再生能源应用兼容。此外，所有组件都在两种模式下使用，从而提高了组件的利用率。已经进行了彻底的分析以证明所提出的转换器的上述特性。理论分析已通过200 W原型的仿真和实验结果得到验证。