有源电力滤波器关键技术的研究  

Research on key technologies of active power filter

作　　者：綦慧[1] 赵聪[1] 

机构地区：[1]北京工业大学,北京100124

出　　处：《电气传动自动化》2016年第2期1-5,33,共6页Electric Drive Automation

摘　　要：电力电子设备的广泛使用,使得电网中谐波污染越来越严重。有源电力滤波器APF(Active Power Filter)作为目前治理谐波的主要手段,越来越受到人们的重视。详细阐述了APF的工作原理,并在此基础上提出了一种基于频域分析的FFT检测法与基于不定频滞环的SVPWM电流跟踪法相结合的控制策略,以期在精准检测电网电流谐波分量的同时,也能够获得较好的电流跟踪特性。理论仿真和样机实验结果表明,该控制策略大大降低了汇入电网的谐波电流,有效减小了谐波对电网的污染。With the wide applications of the power electronic equipments,the harmonic pollution in electrical power system becomes more and more serious in recent years. As the primary means of harmonic suppression,the active power filter（APF）has been drawing more and more attention. The working principle of APF were described in detail,and on this basis,in order to detects the harmonic current accurately and obtains good performance of current tracking,a new control strategy is proposed. In this strategy,the fast fourier transform algorithm（FFT）method is used to detected the harmonic current,and the space vector pulse width modulation（SVPWM）current control method based on indeterminate frequency hysteresis is used to track the compensating current. The results of simulation and experiment show that this strategy can greatly reduce the distortion rate of the grid current and can effectively restrain harmonic pollution of the grid.

关 键 词：有源电力滤波器 FFT SVPWM 不定频滞环 

分 类 号：TN713.8[电子电信—电路与系统]