摘要
为提高有源电力滤波器(APF)的补偿性能,提出一种基于同步旋转坐标系的矢量比例积分(VPI)控制器的电流控制策略。在旋转坐标系下,对指定次谐波分别设置对应的VPI控制器,利用其无穷大开环增益和频率选择特性,实现谐波电流的无静差和选择性跟踪补偿。通过对VPI控制器在谐波频率点处的频谱分析,论证了VPI控制器在谐波补偿中对谐波电流的优良控制性能。实验结果验证了所提出控制策略的有效性。
To improve the compensation performance of three-phase shunt active power filter（APF）,a novel control strategy is proposed based on vector proportional integral （VPI） controller in synchronous rotating coordinate frame. The method employs an array of vector proportional integrators for each harmonic, using its infinite open-loop gain and frequency selectivity to achieve harmonic current static error and selective tracking compensation, implemented in synchronous rotating coordinate frame.It is demonstrated that VPI controller for harmonic current compensation has excellent performance by the analysis of its point of harmonic frequencies in the spectrum,The effectiveness of the proposed control scheme is verified completely by experimental results.
出处
《电力电子技术》
CSCD
北大核心
2015年第4期74-77,共4页
Power Electronics
关键词
有源电力滤波器
谐波抑制
矢量比例积分
active power filter
harmonic elimination
vector proportional integral
