一种改进型并联混合有源电力滤波器及其控制  

An Improved Shunt-hybrid-type Active Power Filter and Its Control Method

作　　者：周柯[1] 王凯[1] 刘路[1] 覃奇[2] 楚红波[1] 

机构地区：[1]广西电网公司电力科学研究院,广西壮族自治区南宁市530023 [2]广西电网公司百色供电局,广西壮族自治区百色市533000

出　　处：《中国电机工程学报》2012年第30期67-72,12,共6页Proceedings of the CSEE

摘　　要：针对并联混合型有源电力滤波器谐波电流注入支路中存在阻塞谐波电流注入的阻抗问题,提出一种改进注入支路的并联混合型有源电力滤波器,使谐波注入支路上不存在影响补偿谐波电流注入电网的阻抗。根据该新型电路结构,通过分析谐波补偿和基波有功电流控制的原理,得出有源部分逆变器输出电压目标值的计算公式,并提出一种新的定频滞环电压控制方法用于控制逆变器输出电压,从而间接地实现了谐波补偿电流和直流侧电容电压的精确控制。最后,通过PSIM仿真实验和物理装置模拟实验验证本文所提新型注入支路和定频滞环控制方法的可行性和有效性。A shunt hybrid type active power filter with improved injection circuit is presented to eliminate the impedance of harmonic current injection circuit in this paper,addressing to the problem that the impedance of harmonic current injection circuit hampers harmonic injection current to inject into the grid.According to the new type circuit presented,the calculation formula of the output voltage reference of active part inverter is obtained by analyzing the principle to harmonic current compensation and active current control,meanwhile a novel fixed-frequency hysteresis voltage control method is presented to control the output voltage of active part inverter,which achieved successfully the regulation of harmonic compensation current and DC link capacitor voltage.At last,the results of simulations and experiments verified the feasibility and validity of the new type injection circuit and fixed-frequency hysteresis control method presented in this paper.

关 键 词：有源电力滤波器 注入支路 谐波电流 固定频率 滞环控制 

分 类 号：TM72[电气工程—电力系统及自动化]