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用于抑制器件电容引起振铃电压的三腿高增益移相DC-AC变换器

Three-Legged High-Gain Phase-Modulated DC–AC Converter for Mitigation of Device Capacitance Induced Ringing Voltage

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中文摘要

本文提出了一种消除微逆变器中电压振铃问题的方案。通过在连接滤波电感的全桥输入端引入一种时间关键的两步电压波形,并增加一个额外的开关桥臂来实现。该拓扑结构有效抑制了由器件寄生电容引起的电压振铃,提升了变换器的电磁兼容性和可靠性。

English Abstract

In this paper, a method is proposed to eliminate the voltage ringing problem in a phase-modulated dc–ac converter, also known as a micro-inverter. The basic idea is to apply a time-critical two-stepped voltage waveform to the input of the converter bridge connected to the filter inductor. This method is implemented by a new topology that has one more switching leg added to the full bridge voltage ...
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SunView 深度解读

该技术主要针对微逆变器(Micro-inverter)领域,通过优化桥臂拓扑抑制电压振铃,这对提升阳光电源户用光伏逆变器产品的电磁兼容性(EMC)和开关频率具有参考价值。随着户用市场对高功率密度和高效率的要求日益提高,该拓扑方案有助于减少EMI滤波器体积,降低开关损耗。建议研发团队评估该三腿拓扑在小型化组串式逆变器中的应用潜力,特别是在使用高频宽禁带半导体器件时,该方法对抑制寄生参数引起的电压尖峰具有显著的工程应用价值。