A Robust Fuzzy Sliding Mode Control Design for Current Source Inverter based STATCOM Application

This paper presents a robust fuzzy sliding mode control of a CSI based STATCOM. The dq-frame state space model is considered for nonlinear mathematical model for the system and controller design. A nonlinear fuzzy logic enhanced sliding mode controller has been proposed to provide active and reactive power control under various faulted operating conditions. Based upon the time domain simulations in MATLAB/SIMULINK environment the proposed controller is tested and it's better performance is shown compare with the conventional PI controllers with respect to voltage stability, damping of power oscillations and improving of transient stability.