Chapter 6 - Adaptive control of islanded AC microgrid

Abstract

The design of a resilient adaptive secondary controller for a stand-alone AC microgrid system is proposed in this study. Lyapunov functions have a fixed-time converging property, which is used to construct the proposed controller. Regardless of unforeseen disturbances, the proposed technique has the additional advantages of accurate active and reactive power sharing, along with the restoration of voltage and frequency reference values before the pre-determined timeframe. In comparison to traditional controllers, the suggested one has a very easy tuning procedure. In addition, the suggested adaptive control method has a straightforward mathematical formulation that makes it easy to apply. Simulations are carried out to demonstrate efficacy of the proposed control approach, and its performance is compared to that of a traditional secondary controller. The proposed controller displays improved performance in terms of voltage and frequency tracking in the face of uncertainties and load variations, according to the results.