Application of vector resonant controller on shunt active power filter
HUANG Juanmin, ZHANG Youbing, XIE Luyao, SHENG Zhihui
(College of Information and Engineering, Zhejiang University of Technology, Hangzhou 310023, China)
 

Abstract: Aiming at problems of shunt active power filter (SAPF) in controlling compensation current, the advantages and drawbacks of proportional integral (PI) controller and vector resonant (VR) controllers were investigated. Based on the above controllers, a improved control scheme was presented, in which fundamental of compensation current was regulated separately by PI controller without static error, and harmonics of compensation current was accurately regulated separately by different VR controllers. The mathematic model of SAPF and its characteristics in synchronous rotating coordinate system were introduced. The feasibility of the proposed scheme was evaluated by detailed analysis of the VR and PI controllers in current closedloop, based on the polezero cancellation technique. The proposed scheme were tested on Matlab/Simulink platform and SAPF prototype.The results indicate that the APF has excellent compensation performance by using the proposed scheme.
Key words: shunt active power filter(SAPF); vector resonant controller; PI controller; static error control