In this article, a new single-input multioutput high step-up dc-dc converter is proposed, which is suitable for sustainable energy applications. Basically, the presented converter consists of an interleaved and a modified single-ended primary inductor converter, which uses coupled-inductor and switched-capacitor-voltage-multiplier techniques. Each stage generates a different output voltage using only one input voltage source and one duty ratio. The output voltage gains are effectively increased at low duty ratios by employing coupled-inductors and voltage multiplier cells. Moreover, because of using low voltage rated MOSFETs, the voltage stresses on power switches are very low. Therefore, the conduction losses are reduced and the conversion efficiency will be improved. In order to lighten the reverse recovery problems of the output diodes, the leakage inductance of the coupled inductors can be beneficial. The maximum efficiency that is achieved by the proposed converter is 97.5% and 96.2%, respectively, for both output loads. The operating principles and steady-state analysis are discussed in detail. Finally, experimental results for a prototype of the proposed topology that is implemented under 24 V for input voltage source, 286 and 390 V, respectively, for both output ports are presented to assess the effectiveness of the proposed converter.

中文翻译：

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用于可持续能源应用的新型单输入多输出交错式高升压直流转换器


本文提出了一种新型单输入多输出高升压 DC-DC 转换器，适用于可持续能源应用。基本上，所提出的转换器由交错和改进的单端初级电感转换器组成，该转换器使用耦合电感器和开关电容器电压倍增器技术。每级仅使用一个输入电压源和一个占空比生成不同的输出电压。通过采用耦合电感器和电压倍增器单元，可以在低占空比下有效地提高输出电压增益。此外，由于使用额定电压较低的 MOSFET，电源开关上的电压应力非常低。因此，传导损耗减少，转换效率提高。为了减轻输出二极管的反向恢复问题，耦合电感器的漏感可能是有益的。对于两个输出负载，所提出的转换器实现的最大效率分别为 97.5% 和 96.2%。详细讨论了工作原理和稳态分析。最后，提出了所提出的拓扑原型的实验结果，该原型在两个输出端口的输入电压源分别为 24 V、286 和 390 V 的条件下实现，以评估所提出的转换器的有效性。