Prescribed Fixed-Time-Based Adaptive Consensus Voltage Recovery Control for Microgrid

This paper studies a fuzzy adaptive consensus control problem for islanded microgrid (MG) with output contactor fault (OCF) via prescribed fixed-time performance (PFTP) method. Firstly, a PFTP function is proposed to improve the voltage recovery’s speed. Then, the unknown nonlinear function is estimated via using the fuzzy logic system. Next, an adaptive fuzzy cooperative control strategy is developed via backstepping technology to realize the voltage recovery, and the adverse effect of OCF is solved by constructing an adaptive law. According to the Lyapunov stability theory, the voltage recovery synchronization error (VRSE) is testified to satisfy the PFTP, and in the closed-loop systems all signals are bounded. Finally, an illustrative example validates the effectiveness of the proposed control protocol via MATLAB.