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用于低脉冲比逆变器开关谐波衰减的有源陷波滤波器

An Active Trap Filter for Switching Harmonic Attenuation of Low-Pulse-Ratio Inverters

语言:

中文摘要

在高功率转换应用中,低开关频率与基波频率比导致开关谐波抑制困难。虽然多LC陷波滤波器成本效益高,但易受参数波动和谐波谐振影响。本文提出了一种有源陷波滤波器,旨在有效衰减开关谐波,提高系统鲁棒性。

English Abstract

Switching harmonic attenuation has always been challenging for inverters used in high-power conversion applications, where ratio of switching to fundamental frequency is low. Addition of multiple LC-trap filters is no doubt a feasible cost-effective method, which has increasingly been used, but generally susceptible to filter parameter variations and harmonic resonances. This paper hence presents ...
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SunView 深度解读

该技术对阳光电源的核心产品线(如大功率组串式逆变器及集中式逆变器)具有重要参考价值。随着光伏系统向高功率密度发展,低开关频率下的谐波抑制是提升电能质量的关键。该有源陷波滤波器方案能够有效解决传统无源滤波器在参数漂移下的谐振问题,提升系统在弱电网环境下的并网稳定性。建议研发团队评估该拓扑在大型地面电站逆变器中的应用潜力,以优化滤波器体积并降低对电感参数一致性的依赖,从而进一步提升产品竞争力。