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具有零输入电流纹波的三端口高升压和高降压DC-DC变换器

Three-Port High Step-Up and High Step-Down DC-DC Converter With Zero Input Current Ripple

语言:

中文摘要

本文提出了一种具有高电压转换比的非隔离三端口DC-DC变换器。通过改变三个端口间输入电压源的位置,实现了三种不同的单输入双输出工作模式。该变换器在全占空比范围内实现了低压侧输入电流纹波的消除,显著提升了系统效率与电能质量。

English Abstract

In this article, a nonisolated three-port dc-dc converter with high voltage conversion ratio is proposed. In the proposed converter, by changing the place of input voltage source between each of the three ports, three different single-input two-output operation modes are achieved. The input current ripple of the proposed converter is eliminated at the low voltage side for the whole range of duty c...
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SunView 深度解读

该拓扑结构提出的零输入电流纹波技术对阳光电源的组串式光伏逆变器及储能PCS产品具有重要参考价值。在光储一体化系统中,多端口变换器能有效简化系统架构,减少功率器件数量。零纹波特性可降低对输入侧电容的应力要求,延长关键元器件寿命,提升系统可靠性。建议研发团队评估该拓扑在户用光储系统中的应用潜力,特别是针对高压电池接入场景,以优化系统效率并降低电磁干扰(EMI)设计难度。