Design of an adaptive nonlinear controller to improve stabilization of a power system

This paper presents a novel adaptive nonlinear controller, capable of combi ning the input-output linearization technique and Lyapunov stability theory . Based on the Lyapunov stability theory, the adaptation law of the propose d controller is derived, along with the verification of the overall system' s stability. The controller's performance in a simple power system (a singl e machine connected to infinite bus with unknown system parameters) is also examined using simulation studies. Those results confirm that the proposed adaptive controller yields a good dynamics performance regardless of the u nknown system parameters. (C) 1999 Elsevier Science Ltd. All rights reserve d.