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基于新型载波调制与逻辑功能的三相飞跨电容光伏逆变器漏电流抑制

Leakage Current Suppression of Three-Phase Flying Capacitor PV Inverter With New Carrier Modulation and Logic Function

语言:

中文摘要

本文研究了无变压器三相飞跨电容光伏逆变器的漏电流抑制技术。通过建立系统共模模型,分析了漏电流产生机理,并提出了一种新型载波调制策略与逻辑功能,有效抑制了漏电流,提升了系统性能。

English Abstract

Flying capacitor photovoltaic (PV) inverters have been widely discussed in the literature. However, the relevant leakage current issues have not received much attention. In this paper, the modulation techniques for a transformerless three-phase flying capacitor PV inverter are investigated for the leakage current suppression. First, the theoretical analysis of the system common mode model and leak...
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SunView 深度解读

该研究针对无变压器三相飞跨电容逆变器,通过调制策略优化解决漏电流问题,这对阳光电源的组串式逆变器技术路线具有重要参考价值。飞跨电容(FC)多电平拓扑在提升功率密度和降低输出谐波方面优势显著,能够进一步优化阳光电源工商业及大型地面电站逆变器的体积与效率。建议研发团队评估该调制逻辑在现有SG系列组串式逆变器中的移植可行性,以在满足安规对漏电流严苛要求的同时,进一步降低磁性元件成本,增强产品在复杂电网环境下的竞争力。