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一种具有高直流电压利用率和浮动电容自平衡能力的三相五电平逆变器

A Three-Phase Five-Level Inverter With High DC Voltage Utilization and Self-Balancing Capacity of Floating Capacitor

语言:

中文摘要

多电平逆变器是光伏电站和风电场等可再生能源发电的常用方案。本文提出了一种具有高直流电压利用率的三相五电平逆变器。该逆变器的显著特点是其最大直流电压利用率是传统三相逆变器(如中点钳位型NPC、飞跨电容型FC等)的两倍。

English Abstract

Multilevel inverter are popular solutions in photovoltaic power station, wind farm, and other renewable energy generation. This article presents a three-phase five-level inverter with high dc voltage utilization. A significant feature of the inverter is that its maximum dc voltage utilization is twice that of the traditional three-phase inverters such as neutral point clamped, flying capacitor (FC...
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SunView 深度解读

该拓扑结构通过提高直流电压利用率,能够有效降低逆变器在同等功率等级下的开关器件电压应力,或在相同电压等级下提升功率密度,这对阳光电源的组串式和集中式光伏逆变器产品线具有重要参考价值。高电压利用率意味着更低的系统损耗和更小的无源器件体积,有助于优化PowerTitan等储能系统及大型光伏逆变器的成本与效率。建议研发团队评估该拓扑的控制复杂度和动态响应性能,重点关注其在复杂电网环境下的自平衡能力,以探索其在下一代高压光伏并网产品中的应用潜力。