三相变流器无源阻尼型LCL滤波器的分析与设计

发布时间：2018-03-16 11:19

本文选题：无源阻尼　切入点：LCL滤波器　出处：《电工技术学报》2017年02期 　论文类型：期刊论文

【摘要】：在三相电压型变流器(VSC)中,LCL型滤波器以其优越的高频衰减特性,得到了广泛应用,尤其是在大功率场合,但其阻抗特性含有谐振峰,同时额外增加的RC支路消耗有功和无功功率,使得参数设计变得复杂。分析得知,无源阻尼型LCL滤波器的外特性仅取决于其总电感量L、阻尼系数ζ和自然频率ωn。在保证外特性相同的前提下,滤波器的参数将有不同的组合,因此需要进行优化设计。首先对滤波器进行深入的理论分析,在此基础上根据需求确定出滤波器的外特性。然后以RC支路的最小有功和无功损耗为目标对滤波器参数进行优化设计,得到无源阻尼型LCL滤波器的参数设计结果。最后,对不同参数的LCL滤波器进行实验,实验结果验证此分析与设计的合理性和有效性。
[Abstract]:The LCL filter has been widely used in three phase voltage source converter (VSC) because of its superior high frequency attenuation characteristics, especially in the high power field, but its impedance characteristic contains resonance peak. At the same time, the additional RC branch consumes active and reactive power, which makes the parameter design more complicated. The external characteristic of passive damping LCL filter depends only on its total inductance L, damping coefficient 味 and natural frequency 蠅 n. Under the condition that the external characteristics are the same, the parameters of the filter will have different combinations. Therefore, it is necessary to optimize the design. First of all, the filter is analyzed deeply in theory. On this basis, the external characteristics of the filter are determined according to the requirements. Then the parameters of the filter are optimized by taking the minimum active power and reactive power loss of the RC branch as the target, and the parameter design results of the passive damping LCL filter are obtained. The experimental results of LCL filters with different parameters verify the rationality and validity of the analysis and design.
【作者单位】：西安交通大学电气工程学院;西安交通大学城市学院;
【分类号】：TM464

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