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首页> 外文期刊>Power Electronics, IET >Coupled-inductor boost integrated flyback converter with high-voltage gain and ripple-free input current
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Coupled-inductor boost integrated flyback converter with high-voltage gain and ripple-free input current

机译：耦合电感升压集成反激转换器，具有高压增益和无纹波输入电流

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摘要

DC-DC converters with high-voltage gain and low-input current ripple have attracted much attention in photovoltaic, fuel cells and other renewable energy system applications. Conventional boost-flyback converter can achieve high-voltage set-up ratio; however, its input current is pulsing and the voltage stress across output diode of flyback-cell is high. In this study, by incorporating coupled-inductor into the boost-cell of boost-flyback converter, the voltage stress across the output diode is effectively reduced. Passive snubber circuit is utilised to suppress the voltage spike across power switch, low-voltage-rated metal-oxide semiconductor field effect transistor (MOSFET) with low can thus be used to reduce the conduction loss of power MOSFET. In addition, ripple-free input current can be achieved, which makes the design of electromagnetic interference filter easy. Steady-state characteristics of the proposed converter are analysed, and experimental results are given to verify the analysis results.
机译：具有高电压增益和低输入电流纹波的DC-DC转换器已在光伏，燃料电池和其他可再生能源系统应用中引起了广泛关注。传统的升压-反激转换器可以实现高电压设置比；然而，它的输入电流是脉动的，反激电池的输出二极管两端的电压应力很高。在这项研究中，通过将耦合电感器合并到升压反激式转换器的升压单元中，可以有效降低输出二极管两端的电压应力。无源缓冲电路用于抑制功率开关两端的电压尖峰，因此可以使用低额定电压的低压金属氧化物半导体场效应晶体管（MOSFET）来降低功率MOSFET的传导损耗。另外，可以实现无纹波的输入电流，这使得电磁干扰滤波器的设计变得容易。分析了该转换器的稳态特性，并给出了实验结果以验证分析结果。

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