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拓扑与电路 DC-DC变换器 光伏逆变器 功率模块 ★ 4.0

基于三绕组耦合电感和倍压单元的高增益DC-DC变换器

A High Voltage Gain DC–DC Converter Based on Three Winding Coupled Inductor and Voltage Multiplier Cell

语言:

中文摘要

本文提出了一种基于三绕组耦合电感和倍压单元的单开关高升压DC-DC变换器,旨在实现极高的电压转换比。通过引入无源钳位电路,该变换器能够回收漏感能量并降低主开关管的电压应力,从而允许选用低导通电阻的功率开关器件,提升整体转换效率。

English Abstract

This article introduces a single-switch, high step-up, dc–dc converter based on coupled-inductor with three winding and voltage multiplier cell to obtain a very high-voltage conversion ratio. A passive clamp circuit is applied in the converter to recycle the energy of leakage inductance and reduce voltage stress of the main power switch. This leads to utilize a power switch with low on-state resis...
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SunView 深度解读

该拓扑结构在高升压比转换方面具有显著优势,对阳光电源的户用光伏逆变器(如SG系列)及微型逆变器产品线具有重要参考价值。在户用光伏系统中,光伏组件串联数量受限,该技术可有效提升DC-DC级的升压能力,减小体积并降低开关管电压应力,从而提升整机效率。建议研发团队评估该拓扑在提升功率密度方面的潜力,特别是在追求更小体积、更高效率的下一代户用逆变器设计中,可考虑将其作为优化DC-DC级拓扑的备选方案。