Voltage and frequency control of isolated micro-grid using extended linear model predictive controller

This paper proposes application of extended linear model predictive controller (ELMPC) in an isolated micro-grid for voltage and frequency control. ELMPC can handle the non linearity in the system better than the PI controllers. ELMPC performs local linearization of the micro-grid at each sampling instant and generates the manipulated control trajectory to optimize its future behavior. It performs better than the linear controllers designed based on linearization around a single operating point. At the same time it reduces the computational complexities involved in the non linear MPC design. Performance of ELMPC is explained through simulation analysis carried out in MATLAB on an eight bus micro-grid.