Coupled-inductor-based boost converters suffer from high switch current stress in steady state and transient due to less self-inductance value in their winding. In this article, a generalized switch current stress reduction technique is proposed by modifying circuit topology of coupled-inductor-based high step-up boost converter (CIHBC). This is achieved by a half-cycle resonating branch utilizing inductance of coupled inductor. Furthermore, applying the concept, a coupled inductor boost converter is proposed for achieving high step-up ratio with low switch current and voltage stress. The operation of the proposed converter using a resonating branch is discussed in both continuous and discontinuous conduction modes. The theoretical findings are verified through a simulation study in PSIM 9.1.1. A prototype converter of 100-W output power is designed to prove the concept and for performance analysis of the proposed converter.

中文翻译：

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基于耦合电感的单开关高升压升压转换器的通用开关电流应力减小技术

基于耦合电感的升压转换器由于其绕组中的自感值较小，因此在稳态和瞬态时都承受着较高的开关电流应力。在本文中，通过修改基于耦合电感的高升压升压转换器（CIHBC）的电路拓扑，提出了一种通用的开关电流应力降低技术。这是通过利用耦合电感器的电感的半周期谐振支路实现的。此外，应用该概念，提出了一种耦合电感升压转换器，用于在低开关电流和电压应力的情况下实现高升压比。在连续和不连续传导模式下都讨论了所提出的使用谐振支路的转换器的操作。理论发现通过PSIM 9.1.1中的仿真研究得到了验证。