Reactive Power Compensation in a Microgrid Coupled to Electrical Vehicles

This paper presents how Electric Vehicle (EV) bidirectional chargers support microgrid stability. This is realized by microgrid integration of electrical vehicles (EVs) connected to an aggregator (AGGR), which involves a Multi-Agent control system (MAS) by executing a three-stage algorithm controlling the reactive power for an agent and the power balance of the microgrid. A bidirectional control circuit with load balancing energy devices connected to a bidirectional converter is used in the topology. This control circuit enables power factor correction (PFC), wherein the three phase PFC control algorithm is based on virtual control. The control algorithm used in specifying how much reactive power is inserted is presented in this paper. A Real Time Digital Simulator (RTDS) has been used to model the power system of the microgrid. Simulation results show compensation of reactive power and the saturation point of the current keeps the power within preset boundaries.