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单相两级式逆变器直流母线电容纹波电流抑制

Ripple Current Reduction in DC-Link Capacitor for a Single-Phase Two-Stage Inverter

语言:

中文摘要

单相两级式逆变器是户用光伏等脱碳应用的核心能量转换单元。直流母线电容作为能量缓冲器,其寿命直接决定了系统的可靠性。本文研究了如何通过优化控制策略或电路设计,降低直流母线电容的纹波电流,从而延长电容寿命并提升整体系统的可靠性。

English Abstract

The single-phase two-stage inverter is a common energy conversion unit for emerging decarbonization applications, such as residential photovoltaics systems. Specifically, a dc–dc converter and an inverter are connected back-to-back with a dc-link capacitor serving as an energy buffer. The reliability of this unit depends on the lifespan of the dc-link capacitor, which decreases significantly with ...
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SunView 深度解读

该研究直接关联阳光电源户用光伏逆变器产品线。直流母线电容是逆变器中易损件,其纹波电流导致的温升是影响整机寿命的关键因素。通过优化纹波电流抑制技术,可显著提升户用逆变器的可靠性,降低售后运维成本,并支持更紧凑的功率密度设计。建议研发团队评估该文提出的抑制策略在现有组串式逆变器中的可行性,以进一步优化产品寿命周期管理,提升iSolarCloud平台的运维预测准确性。