电流型有源电力滤波器的仿真

SIMULATION OF A CURRENT ACTIVE POWER FILTER

有源电力滤波器是当前对电网中谐波污染补偿或抵消的有效手段 ,文中对有源电力滤波系统的工作原理进行了理论研究和分析。讨论了其检测电源电流和检测负载电压控制方式的原理、系统结构和特点。提出了基于载波组合相移技术的电流型电力有源滤波器 ,在较低的开关频率下实现了等效的高频载波效果。文章通过仿真和实验 。

The Active Power Filters (APF) system is an effective means to cope with harmonic pollution in power network,This paper describes the system structure and basic operation principle of the active power filter,the distinguishing features for the control approaches of both detecting source current and detecting load voltage.A novel current-source active power filter(APF)based on multi-modular converter with carrier phase-shifted SPWM (CPS-SPWM) technique has been proposed.With this technique,the effect of equivalent high switching frequency converter has been obtained with low switching frequency converter.The experiment results indicate that the active power filter's stability is high and its harmonics compensation performance is excellent.