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带LLCL型滤波器的有源电力滤波器的设计

, PP. 203-208

Keywords: 并联型有源电力滤波器,LLCL型滤波器,无源阻尼,广义积分控制

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Abstract:

LLCL型滤波器通过电感和电容发生串联谐振滤除开关纹波,在使用更小电感量的情况下,可以获得比LCL型滤波器更好的滤波效果。本文总结了在并联型有源电力滤波器应用中,LLCL型滤波器的参数设计方法,对无源阻尼谐振的特点进行了分析,提出在保证系统稳定的前提下,尽量减小阻尼电阻值以保持高开关纹波衰减能力。控制方面采用广义积分控制实现了补偿电网电流中50次以内奇次谐波的效果。最后通过仿真证明了LLCL滤波器以及广义积分控制器的作用和效果。

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