A Decentralized Switched System Approach to Overvoltage Prevention in PV Residential Microgrids

In this paper, we consider the problem of overvoltage arising in PV residential microgrids due to excessive power injection into the grid by the PV generators. We propose a decentralized switched controller to curtail excess active power in order to avoid overvoltage while considering the active power constraints. Under different power constraints the system will take different forms: LTI, switched or hybrid system. Convergence to the voltage limit is shown for all three cases.