基于有源滤波的单相交流充电桩谐波治理研究  

Research on Harmonic Management of Single-phase AC Charging Pile Based on Active Filtering

作　　者：施浩杰 王英健 庄永 袁光明[1] SHI Hao-jie;WANG Ying-jian;ZHUANG Yong;YUAN Guang-ming(Shandong University of Technology,Zibo 255000,China)

机构地区：[1]山东理工大学,机械工程学院,山东淄博255000 [2]中国华电集团华电章丘发电有限公司,山东济南250200

出　　处：《电力电子技术》2023年第7期80-83,共4页Power Electronics

基　　金：国家自然科学基金(52075305);山东省高等学校青创科技支持计划(2019KJB031)。

摘　　要：目前交流充电桩应用广泛,随着充电桩日益增多,其产生的谐波污染也越来越严重。针对单相交流充电桩谐波治理问题,将有源滤波技术应用到交流充电桩中。根据充电桩特性采用单相并联有源滤波器(PAPF)。对基于瞬时无功功率理论的单相谐波检测法进行探究,并结合最小均方(LMS)与最小四阶矩(LMF)自适应算法提出一种新型定步长自适应低通滤波器用于提高谐波检测性能。控制环节采用结合重复控制的内外环复合控制策略完成稳压控制、谐波追踪及补偿。基于Matlab/Simulink仿真分析低通滤波环节输出的波形并搭载样机实验,结果验证该算法可提升谐波检测性能。建立单相PAPF系统仿真并通过快速傅里叶变换(FFT)分析系统谐波补偿能力,结果证明单相PAPF可有效治理谐波,使总谐波失真(THD)降至5%以下。Nowadays,AC charging piles are widely used,and with the increasing number of charging piles,the har-monic pollution generated by them becomes more serious and affects the power quality of the grid.Aiming at the pro-blem of harmonic control of the single-phase AC charging pile,it is decided to apply the active filter technology.The single-phase parallel active power filter(PAPF)is selected according to the characteristics of the charging pile.The si-ngle harmonic detection method is studied based on instantaneous reactive power theory,and a new adaptive low-pass filter with fixed-step size is proposed to improve the performance of harmonic detection by combining the least mean square(LMS)and the least fourth-order moment(LMF)adaptive algorithms.The PAPF control part adopts the compo-site control strategy of inner and outer loop combined with repetitive control to complete the voltage stabilization control,harmonic tracking,and compensation.Based on Matlab/Simulink,the output waveforms of the low-pass filter link are si-mulated and analyzed,and the prototype experiment is carried out.The results verify that the algorithm can improve the performance of harmonic detection.Finally,the single-phase PAPF system simulation is established and the harmo-nic compensation capability of system is analyzed by the fast Fourier transform(FFT).The results demonstrate that si-ngle-phase PAPF can effectively manage harmonics and the total harmonic distortion(THD)is reduced to less than 5%.

关 键 词：有源滤波器 谐波治理 自适应算法 复合控制 

分 类 号：TN713[电子电信—电路与系统]