A soft-switched current-fed dual-input isolated dc–dc converter topology is proposed in this article. This converter integrates two low-voltage dc sources with similar transferred characteristics such as two PV panels or two batteries into a dc bus using a simple circuit topology and a minimum number of active and passive components. The energy transfer between the input and output ports is controlled by modulating the pulse-width of the control signals. Moreover, the soft-switching operations are discussed, and the smooth connection between the input-side inductor and the transformer leakage inductance is achieved. Furthermore, the operation of the converter in reverse power flow direction is presented to demonstrate the bidirectional operational capability of the converter. Finally, different operation modes of the proposed dual-input converter are verified by the experimental results obtained from a 250 W hardware prototype.

中文翻译：

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一种软开关电流馈电双输入隔离式 DC-DC 转换器拓扑

本文提出了一种软开关电流馈电双输入隔离式 DC-DC 转换器拓扑。该转换器使用简单的电路拓扑和最少数量的有源和无源元件，将两个具有相似传输特性的低压直流电源（例如两个 PV 面板或两个电池）集成到一个直流总线中。输入和输出端口之间的能量传输通过调制控制信号的脉冲宽度来控制。此外，讨论了软开关操作，实现了输入侧电感和变压器漏感之间的平滑连接。此外，还介绍了转换器在反向功率流方向上的运行，以展示转换器的双向运行能力。最后，