LC型三相无源滤波器设计  

Design of LC Type Three-phase Passive Filter

作　　者：徐福键 朱建鑫 周岩[1] XU Fu-jian;ZHU Jian-xin;ZHOU Yan(Nanjing University of Posts and Telecommunications,Nanjing 210003,China)

机构地区：[1]南京邮电大学,自动化学院,人工智能学院,江苏南京210003

出　　处：《电力电子技术》2023年第8期32-35,共4页Power Electronics

基　　金：国家自然科学基金(51307088);江苏省自然科学基金(BK20191383)。

摘　　要：电力电子设备大多为非线性负载,给电网带来了严重的谐波污染,使得电能质量下降。无源滤波器由于结构简单,且针对性强,成为了抑制谐波最普遍的设备。此处主要研究了一种针对风机的无源滤波设计方案,在采用了单调谐滤波器的基础上,电网侧和负载侧各串联了一个电抗器,针对风机产生的特定次谐波进行参数的设计。利用Matlab中的Simulink模块建立了无源滤波器的仿真模型,对无源滤波器的参数进行优化。最后搭建实物平台,进行了相关实验,实验结果中网侧电流的总谐波畸变率(THD)值从44%降到了7.8%,谐波电流大幅减少,提高了电能质量。Most of the power electronic devices are nonlinear loads,which bring serious harmonic pollution to the power grid and degrade the power quality.Because of its simple structure and strong pertinence,passive filter has become the most common equipment to suppress harmonic.A design scheme of passive filtering for fans is studied.On the basis of using a single-tuned filter,a reactor is connected in series at the power grid side and the load side to design parameters for specific subharmonics generated by fans.The simulation model of passive filter is established by using Simulink module in Matlab,and the parameters of passive filter are optimized.Finally,a physical platform is built and relevant experiments are carried out.The experimental results show that the THD value of the grid side current is reduced from 44%to 7.8%,the harmonic current is greatly reduced,and the power quality is improved.

关 键 词：单调谐滤波器 抑制谐波 无源滤波器 

分 类 号：TN713[电子电信—电路与系统]