ANFIS based sliding mode controller for reactive power compensation in fuel cell based hybrid power system

In this paper, an adaptive network based fuzzy inference system (ANFIS) terminal sliding (TS) mode) controller is suggested for improving the reactive power and overall stability. This ANFIS control system consists of an ANFIS controller and a TS controller which is designed to do as a main controller and the TS controller is designed to cope with disturbances and uncertainties. Small signal model of the hybrid power system with UPFC controller has been modeled and state space equations of the system matrix is formulated for complete analysis. Performance of PI controller based UPFC has been analyzed in stability analysis and it is further improved with an ANFIS based sliding mode controller. Variations of different parameters of the hybrid system are noticed for different wind power inputs and load variations. Results with conventional controller have been compared with ANFIS based sliding mode controller. From the simulation results, the system performance is observed and vital information regarding voltage stability, damping of power oscillations and transient stability are collected.