Abstract
A fuzzy logic controller-based bidirectional inverter is proposed for plug-in electric vehicle battery charger in order to facilitate the G2V and V2G technology. Line-commutated converter with SCR switches is used as a bidirectional inverter in this charging system. The bidirectional line-commutated converter (BLCC) has inherent self-grid synchronization capability which in turn reduces the extra circuitry like phase-locked loop (PLL) and hysteresis controller for grid synchronization. Electric vehicle battery (EVB) is charged utilizing the grid power with the proposed BLCC operating as rectifier in G2V mode, and during predefined schedule, power from the EVB is supplied to the grid by operating BLCC as inverter in V2G mode. This process is accomplished by the proposed fuzzy logic controller which provides the appropriate control signals to the bidirectional line-commutated converter. The power fed to the EVB and to the grid in G2V and V2G modes, respectively, is optimally controlled by the proposed FLC. Simulation studies of the proposed FLC-based EVB charger have been carried out in MATLAB/Simulink software, and the results are presented in this chapter.
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