阻尼损耗最小化的LCL 滤波器参数优化设计[J].pdf

第30 卷 第27 期 中 国 电 机 工 程 学 报 Vol.30 No.27 Sep.25, 2010 90 2010 年9 月25 日 Proceedings of the CSEE ©2010 Chin.Soc.for Elec.Eng. 0258-8013 (2010) 27-0090-06 TM 46 A 470 40 文章编号： 中图分类号： 文献标志码： 学科分类号： ⋅ 阻尼损耗最小化的LCL 滤波器参数优化设计 王要强，吴凤江，孙力，孙奎 (哈尔滨工业大学电气工程系，黑龙江省 哈尔滨市 150001) Optimized Design of LCL Filter for Minimal Damping Power Loss WANG Yaoqiang, WU Fengjiang, SUN Li, SUN Kui (Department of Electrical Engineering, Harbin Institute of Technology, Harbin 150001, Heilongjiang Province, China) ABSTRACT: As to the problem of LCL filter instability and 相应的谐波标准需要较大的电感值。这不仅使网侧 loss conducted by current harmonics, the relational expression 电流变化率下降，系统动态性能降低，还会带来体 between inductance ratio, damping resistor and resonant [5-7] 积过大、成本过高等一系列问题 。 frequency, harmonic attenuation ratio, as well as damping M.Lindgren 和 J.Svensson 在文献[7]中提出用 power loss was deduced. Based on this, an optimized filter LCL 滤波器来解决上述问题。LCL 滤波器的阻抗 design scheme was proposed which warrants a minimal 值与流过的电流频率成反比，频率越高，阻抗越小， damping power loss with a needed filtering performance. The 可以滤除高频谐波，在中大功率应用场合，其优势 optimization can reduce the inductance value and power loss, 更为明显[8-10] 。近年来，也有不少文献讨论滤波器 especially in large- or medium-power applications. Feasibility and effectiveness of the optimized scheme are validated by 设计的问题[11]，注意到 LCL 滤波器在某些高次谐 simulation and experimental results. 波电流下总阻抗接近零，会导致谐振效应