电抗器电阻值对滤波器运行特性的影响研究

Research on Influence of Reactor Resistance on Operating Characteristic of Filter

无源滤波器具有成本相对较低、容量大、拓扑结构简单和功能易于实现等特点,广泛地被用作谐波治理。当今大部分滤波器在设计参数时没有把电抗器内电阻单独作为一个参数来考虑,也没有分析电抗器内电阻对滤波器参数设计的影响。因此本文从单调谐、二阶高通滤波器的参数计算模型出发,分析电抗器内电阻对2种滤波器阻抗特性、品质因数和滤波器损耗的影响。通过工程用滤波器参数来仿真运算考虑电抗器内电阻时对两种不同滤波器特性的影响,并得出电抗器内电阻对滤波器参数设计有影响的结论。通过本文结论可以使2种无源滤波器运行特性分析更为接近滤波器的实际运行特性。

Passive filter is used widely in harmonic suppression tanks to it s high power,relative low cost and simple topological structure.Today most of the filter design parameters without taking the ratings of reactor internal resistance as an individual ratings,there is no analysis of reactor internal resistance on the design of filter parameters.In this paper,from single turned filter model and second order high-pass filter model,the influence of reactor internal resistance on impedance features of two types of filter,quality factor and filter loss is analyzed and conclusion on influence of reactor internal resistance on rating design of filter is made.Throughout conclusion of the paper,the analysis of operation feature of the two types of filters is more close to the actual operation feature of the filters.