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考虑阻性有源滤波器等效输出阻抗的背景谐波抑制方案优化

DOI: 10.13334/j.0258-8013.pcsee.2015.18.021, PP. 4736-4743

Keywords: 背景谐波,谐波抑制,阻性有源滤波器,R-APF等效输出阻抗,比例谐振控制器

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Abstract:

在研究阻性有源滤波器(resistiveactivepowerfilter,R-APF)背景谐波抑制时,发现实际谐波抑制效果弱于理论分析,其原因在于传统R-APF谐波抑制方案,没有考虑R-APF等效输出阻抗对抑制系统背景谐波的影响。为此,提出两种谐波抑制优化方案:考虑R-APF等效输出阻抗的影响,重新整定R-APF的虚拟导纳;选择多重比例谐振控制器增强特定谐波频率处R-APF等效输出阻抗,减弱其对谐波抑制效果的影响。通过仿真和实验验证,所提方案都能更有效的抑制系统背景谐波。

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