Author : Shipra Pandey, Shimi S.L and S.Chatterji

This paper presents the DC voltage regulation of DSTATCOM. A non-linear controller is preferred over linear controller due to non-linear operation of DSTATCOM . Previously the system was implemented with a PI controller for better voltage regulation and improvement in the system dynamics. The effectiveness of a Fuzzy controller is shown in this paper. A PSO based algorithm is used to optimize the parameters of the PI controller. It improves the response of the controlled system effectively by searching a high-quality solution. The tracking of the reference value for capacitor voltage is achieved with less ripples and improved transient performance than the conventional. The paper deals with PI, Fuzzy-PI and PSO-PI. Simulation and comparison of results are presented and it has been found that the proposed algorithm gives better results with better control performance.

Keywords: Particle Swarm Optimization, Nonlinear Controller, Fuzzy, DC Voltage

Article published in International Journal of Current  Engineering  and Technology, Vol.4,No.4 (Aug- 2014)