A non-linear adaptive control strategy for grid connected DC microgrid

Abstract

This paper proposes a non-linear control strategy to curb for the non-linearities and parameter uncertainties for a grid connected system. Since the conventional techniques performance rely highly on the tuned controller gains prior to grid impedance, its performance deteriorates over time. To incorporate these non-linearities, an adaptive backstepping control strategy has been used subjecting to asymptotic stability by Lyapunov approach. The proposed control strategy has been simulated in MATLAB/SIMULINK environment and tested on a 1 kVA FPGA based experimental setup to validate the control scheme under different scenarios. © 2016 IEEE.