基于三相负载分析的五阶低通滤波器负载补偿研究  

Research on Load Compensation of Fifth-Order Low-Pass Filter Based on Three-Phase Load Analysis

作　　者：冉成科[1] 谭璐 张华[1] RAN Chengke;TAN Lu;ZHANG Hua(School of Information Engineering,Hunan Mechanical Electrical Polytechnic,Changsha Hu’nan 410151,China;School of Electrical and Information Engineering,Changsha University of Science&Technology,Changsha Hu’nan 410114,China)

机构地区：[1]湖南机电职业技术学院信息工程学院,湖南长沙410151 [2]长沙理工大学电气与信息工程学院,湖南长沙410114

出　　处：《电子器件》2023年第5期1192-1198,共7页Chinese Journal of Electron Devices

基　　金：湖南省自然科学基金项目(2022JJ60053)。

摘　　要：针对五阶低通滤波器负载不均衡问题,提出一种基于三相负载分析的非线性负载补偿方法。在能量守恒定律基础上明确电流畸变程度。基于电流在正、负序情况下,得出与谐波相对应的参考相位和频率,滤除高频谐波,计算出补偿负载电流后的轴分量,利用误差控制器抑制谐波产生,以此减少滤波器负载。针对非线性负载问题,从电网自身谐波总含量、滤波器配置台数以及滤波器总容量方面考虑,达到多方面、多角度的负载补偿。设计五阶低通滤波器负载补偿实验,仿真结果表明,所提补偿方法在多重PR控制下的总谐波失真量为1.27%,准PR控制下的总谐波失真量为2.94%,负载补偿效果较优。通过实例分析验证得出了仿真测试的有效性。A nonlinear load compensation method based on three-phase load analysis is proposed to solve the problem of unbalanced load of five-order low-pass filter.Based on the law of conservation of energy,the degree of current distortion is determined,and the reference phase and frequency corresponding to the harmonic are obtained.The high frequency harmonic is filtered,the axis component after the compensation of load current is calculated,and error controller is used to suppress the generation of harmonic to reduce the load of the filter.Considering the total harmonic content of the power network,the number of filter configurations and the total capacity of the filter,the nonlinear load compensation can be achieved.The simulation results show that the total harmonic distortion is 1.27% under multiple PR control and 2.94% under quasi-PR control,and the load compensation effect is better.The effectiveness of the simulation test is verified by example analysis.

关 键 词：低通滤波器 非线性负载 谐波电压补偿 电力滤波器 谐波控制 

分 类 号：TM464[电气工程—电器]