Abstract

In this work, a high step-up non-isolated DC-DC converter with a coupled inductor is introduced for renewable applications. The output voltage rate of the proposed structure is efficiently excesses by choosing an appropriate turn’s ratio of the coupled inductor. The voltage lift elements are utilized to further increase the voltage gain and also leads to a decrease in the voltage spike through the switch. The produced leakage inductance energy of the coupled inductor can be retrieved which leads to a decrease in the power losses of the suggested converter. Moreover, conduction losses are decreased by utilizing only a single switch with lower ON-state resistance R_DS-ON. In order to indicate the proficiency of the recommended structure, technical analysis and the comparison survey with other studies are carried out in the literature. Finally, a laboratory scheme at a 200 V/200 W with 24 V input voltage and 95.8% efficiency is prepared to prove the effectiveness of the suggested converter.

摘要

在这项工作中，引入了具有耦合电感器的高升压非隔离式DC-DC转换器，用于可再生应用。通过选择适当的耦合电感匝数比，可以有效地超过所提出结构的输出电压速率。升压元件被用来进一步增加电压增益，并且还导致通过开关的电压尖峰的减小。可以回收耦合电感器产生的漏感能量，从而降低了所建议转换器的功率损耗。此外，通过仅使用具有较低导通状态电阻R _DS-ON的单个开关来降低传导损耗。为了表明推荐结构的熟练程度，在文献中进行了技术分析和与其他研究的比较调查。最后，准备了一个200 V / 200 W，24 V输入电压和95.8％效率的实验室方案，以证明所建议的转换器的有效性。