A single-switch high boost DC–DC converter is introduced in this work. In the suggested topology, a voltage multiplier cell and three-winding coupled inductor (CL) are integrated to obtain an ultra-large conversion ratio. Using a passive clamp circuit and also, no requirement of larger duty cycle values enable the converter to have a very high voltage gain, low conduction loss, and reduced voltage stress of semiconductors. Moreover, the leakage inductance of the CL alleviated diodes reverse recovery problem. Some important merits include ultra-high voltage gain, operating in low duty cycles, reduced voltage stress of semiconductors, continuous input current, high efficiency, and low turn ratio of the CL makes the introduced converter very suitable for renewable energy applications. Steady-state analysis and operation principles of the presented topology are expressed completely in the study. Moreover, the theoretical efficiency analysis and design guidelines of the suggested configuration are presented. Also, the superiority of the presented topology over the state-of-the-art similar DC–DC converters is demonstrated in the comparison study. Eventually, the validity of theoretical analysis is verified using experimental measurement results of the implemented prototype with a power rating of 240 W and an output voltage of 440 V.

中文翻译：

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具有可再生能源应用的连续输入电流的升压型DC-DC转换器的可扩展拓扑

本文介绍了单开关高升压DC-DC转换器。在建议的拓扑中，集成了一个电压倍增器单元和三绕组耦合电感器（CL），以获得超大的转换比。而且，通过使用无源钳位电路，不需要更大的占空比值，就可以使转换器具有很高的电压增益，低的导通损耗和减小的半导体电压应力。而且，CL减轻的二极管的漏电感反向恢复问题。一些重要的优点包括：超高电压增益，在低占空比下运行，半导体的电压应力降低，连续输入电流，高效率以及CL的低匝数比，使得引入的转换器非常适合可再生能源应用。研究中完全表达了所提出拓扑的稳态分析和工作原理。此外，提出了建议配置的理论效率分析和设计指南。此外，在比较研究中还证明了所提出的拓扑结构优于最新的类似DC-DC转换器。最终，使用所实现原型的额定功率为240 W，输出电压为440 V的原型的实验测量结果验证了理论分析的有效性。