有源电力滤波器中LLCL滤波器的性能评价

Mehmet Buyuk, Mustafa Inci, M. Tumay
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引用次数: 3

摘要

有源电力滤波器(APF)是一种基于逆变器的补偿非线性负载产生的谐波电流的器件。逆变器释放高频开关纹波谐波。在早期的研究中,apf通常通过一个L滤波器与电网连接,以减少这些谐波。然而,高阶滤波器,如LCL和LLCL滤波器,最近已经与apf一起使用,而不是L滤波器,因为L滤波器的缓解不足。LCL和LLCL滤波器在高频下对开关纹波谐波有较好的衰减。LLCL滤波器在开关频率处的衰减性能优于LCL滤波器。由于LLCL滤波器存在谐振问题,采用简单电阻串联并联LC支路。本文的目的是评估LLCL滤波器在不同阻尼电阻值下与有源滤波器配合使用时的性能。为了检验LLCL滤波器的性能,在Simulink/MATLAB中建立了仿真模型。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Performance evaluation of LLCL filter for active power filter
Active Power Filter (APF) is an inverter based device that compensates the harmonic currents generated by nonlinear loads. Inverters release high frequency switching ripple harmonics. In early studies, APFs have been generally interfaced to the grid via a single L filter to reduce these harmonics. However, high order filters like LCL and LLCL filters have been recently used with APFs instead of L filter due to insufficient mitigation of L filter. LCL and LLCL filters have better attenuation of switching ripple harmonics at high frequencies. Attenuation performance of LLCL filter at switching frequency is superior to LCL filter. Since LLCL filter has resonance problem, a simple resistor is connected in series with parallel LC branch. The purpose of this paper is to evaluate the performance of LLCL filter for different damping resistor values when used with APF. In order to examine the performance of the LLCL filter, a simulation model is developed in Simulink/MATLAB.
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