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一种用于并网微型逆变器的多电平能量缓冲与电压调制器

A Multilevel Energy Buffer and Voltage Modulator for Grid-Interfaced Microinverters

语言:

中文摘要

本文针对光伏微型逆变器在单相并网时面临的二次谐波能量缓冲问题,提出了一种多电平能量缓冲与电压调制电路。该方案旨在解决光伏源端恒定功率与电网侧脉动功率之间的不匹配,同时优化逆变器在宽电压转换范围下的工作效率,提升系统整体性能。

English Abstract

Microinverters operating into the single-phase grid from solar photovoltaic (PV) panels or other low-voltage sources must buffer the twice-line-frequency variations between the energy sourced by the PV panel and that required for the grid. Moreover, in addition to operating over wide average power ranges, they inherently operate over a wide range of voltage conversion ratios as the line voltage tr...
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SunView 深度解读

该技术主要针对微型逆变器(Microinverter)的功率解耦与效率优化,与阳光电源的户用光伏逆变器产品线高度相关。在户用场景中,单相并网带来的二次谐波是影响电解电容寿命和系统可靠性的关键因素。该多电平能量缓冲方案有助于减小直流侧电容体积,提升功率密度。建议研发团队关注其在提升户用组串式逆变器低压启动性能及延长整机寿命方面的应用潜力,特别是在优化小功率段转换效率和降低纹波电流方面的参考价值。