A Robust Control Strategy for Voltage Regulation in Electrical Distribution Networks by Means of Power Electronic Converters

This article presents a robust nonlinear control scheme applied for voltage regulation in a node of an electrical distribution network through power electronic converters. It is achieved utilizing a series of nested control loops that are based on sliding mode control. In the event of voltage variations in the common coupling point (PCC), the proposed control scheme drives the power converter to inject the necessary power to the grid node to perform voltage compensation. It is worth mentioning that this control scheme can be applied to control distributed generation systems that can provide auxiliary services to the electrical network in terms of voltage regulation. Simulation results demonstrate the effectiveness of the present control scheme.