基于有源功率解耦的无谐波检测APF  

Non-harmonic Detection APF Based on Active Power Decoupling

作　　者：王云亮[1,2] 张双杨 吴艳娟 WANG Yunliang;ZHANG Shuangyang;WU Yanjuan(College of Electrical Engineering and Automation,Tianjin University of Technology,Tianjin 300384,China;Tianjin Key Laboratory of Control Theory and Application for Complex Systems,Tianjin 300384,China)

机构地区：[1]天津理工大学电气工程与自动化学院,天津300384 [2]天津市复杂系统控制理论及应用重点实验室,天津300384

出　　处：《电力系统及其自动化学报》2022年第12期145-151,共7页Proceedings of the CSU-EPSA

基　　金：天津市科技计划资助项目(18ZXYENC00100)。

摘　　要：为解决有源电力滤波器直流侧电压波动会影响谐波补偿效果的问题,本文设计了一种有源电力滤波器直流侧电压波动抑制电路和控制策略。首先,采用基于无谐波检测的网侧电流控制策略,推导了有源电力滤波器在αβ坐标系下的数学模型;其次,分析了有源功率解耦抑制直流电压波动的原理,给出了直流电压波动抑制实现方法,通过在有源电力滤波器直流侧增加1个Buck型有源功率解耦电路,将有源电力滤波器直流侧波动功率转移至解耦电容,减小直流侧电压波动,提高了有源电力滤波器谐波补偿效果,实现了用小容值的薄膜电容代替有源电力滤波器直流侧大容值电解电容;最后,通过Simulink仿真验证了所提方法的正确性和有效性。To solve the problem that the voltage fluctuation on the DC-side of an active power filter(APF)will affect its harmonic compensation effect,an APF DC-side voltage fluctuation suppression circuit and the corresponding control strategy are designed in this paper.First,the grid-side current control strategy based on non-harmonic detection is adopted,and a mathematical model of APF under theαβcoordinate system is deduced.Second,the principle of active power decoupling for suppressing the DC-side voltage fluctuation is analyzed,and a realization method for DC-side voltage fluctuation suppression is given.By adding a Buck-type active power decoupling circuit on the DC-side of the APF,the DC-side fluctuation power of the APF is transferred to the decoupling capacitor,thus reducing the DC-side voltage fluctuation and improving the harmonic compensation effect of the APF.As a result,the replacement of the large-capacity electrolytic capacitor on the DC-side of the APF with a small-capacity film capacitor is realized.Finally,the correctness and effectiveness of the proposed method are verified by Simulink simulations.

关 键 词：有源电力滤波器 直流侧电压 有源功率解耦 无谐波检测 电压波动抑制 

分 类 号：TN713[电子电信—电路与系统]