Multimode Robust Control for Reconfigurable Microgrid With Dynamic and EV Loads

Abstract

This article deals with the control and implementation of a multiobjective reconfigurable microgrid with electric vehicles (EVs), dynamic loads [induction motor (IM)], and home loads. This microgrid is reconfigurable in an islanded and the grid-connected modes with a robust synchronization control. For EVs, the microgrid provides the charging facility, and for home and dynamic loads, the microgrid balances and regulates the point of common coupling (PCC) voltage and frequency in an islanded mode. Usually, in an islanded mode of microgrid, the PCC voltage and frequency are regulated under the sudden start of an IM load, EV charging, and unbalanced nonlinear loads condition. An improved-diffusion proportionate affine projection sign-based control algorithm is used for voltage source converter to regulate the voltage and frequency of the islanded mode of microgrid and also improving power quality. Moreover, the robust grid synchronization control is also introduced in the microgrid control strategy to connect it to the grid/diesel generator set with a seamless mode of transition. The performance of the microgrid is demonstrated through simulated results obtained in the MATLAB/Simulink, and test results are taken from the experimental prototype, which is realized in the laboratory.