V2G Grid-Tied Inverter System based on LCL Filter with Control Strategy

Vehicle-to-Grid (V2G) technology has been hotly discussed in recent years because of its broad prospects in load transfer and regulation. This article proposes a grid-connecting inverter system with LCL filter and control strategy for use in electric vehicle (EV) applications. A review of designation of LCL filter’s parameter and mathematic modelling is given in part 2. An explanation of control strategy is given in part 3. Part 4 gives a comparison of active damping and passive damping control strategies with calculated parameters and gives the simulation results based on MATLAB. The results show with parameters calculated with method in article, both strategies have good tracking performance and similar response time. For the critical steady state, passive damping shows higher amplitude of oscillation. This phenomenon gives a new view proof that active damping method is superior than passive damping control strategy. The article is also of some reference value for determining LCL filter’s parameters and proportional, integral coefficient of similar control strategy.