← 返回

用于无变压器光伏系统的三相ZVR拓扑及调制策略

Three-Phase ZVR Topology and Modulation Strategy for Transformerless PV System

语言:

中文摘要

针对无变压器光伏系统中的漏电流抑制问题,本文提出了一种新型三相ZVR拓扑及基于布尔逻辑函数的调制策略。该方案衍生自单相零电压状态整流拓扑,但其运行机制具有独特性,能有效降低共模漏电流,提升系统运行安全性。

English Abstract

Leakage current reduction is crucial for operating transformerlss photovoltaic (PV) systems. In this letter, a new three-phase topology and modulation strategy is proposed. It is derived from the single-phase zero-voltage state rectifier topology, but the operation mechanism is quite different. Therefore, a new modulation strategy based on the Boolean logic function is proposed to achieve the cons...
S

SunView 深度解读

该研究直接针对无变压器光伏逆变器核心痛点——漏电流抑制,对阳光电源的组串式逆变器(SG系列)产品线具有极高的参考价值。随着光伏系统向更高功率密度和更低成本演进,无变压器架构是主流趋势。该拓扑及布尔逻辑调制策略可优化逆变器共模电压特性,提升产品在复杂电网环境下的电磁兼容性(EMC)表现。建议研发团队评估该拓扑在三相工商业组串式逆变器中的应用潜力,以进一步减小滤波器体积并提升转换效率。