Study on SVPWM control method of active power filter based on adaptive parameters

Two common space vector pulse width modulation (SVPWM) control strategies of active power filter (APF) were compared. In these two control strategies, the parameters of reactor in series compensation circuit are used. The accuracy of reactor parameters has a certain impact on the compensation effect of the APF. To solve this problem, the SVPWM control strategy based on adaptive parameters was proposed in this paper. The reactor parameters can be identified by total least square (TLS). Combined with minor component analysis (MCA) linear neurons, the over-determined equation of TLS can be solved. Then, the amended reactor parameters are calculated in SVPWM. In order to verify the correctness of the adaptive TLS-SVPWM algorithm, some experimental and calculation are conducted respectively in Matlab simulation and test platform. Through measuring data and identifying the reactor parameters of compensation branch, the distortion factors of source current are compared when reactor parameters are amended or not. The simulation results and experimental data analysis showed the rationality of the SVPWM algorithm. © 2012 Chinese Society for Electrical Engineering.