Design and simulation of photovoltaic, wind and CHP hybrid power system for electric vehicle battery charger

This paper deals with electric vehicle (EV) battery charger, supplied by three types of renewable power generation consisting of photovoltaic (PV), wind and combined heat and power (CHP) as a hybrid system. The proposed system consists of three separable distributed power sources that can be joined together in a common DC link. Power electronics charger is designed both in current control and voltage control modes of operation. The power management control unit of EV charger determines reference current and voltage of battery during charging process. Incremental conductance and tip-speed-ratio (TSR) are considered as maximum power point tracking (MPPT) methods both for PV and wind power systems. Grid connected converter is also considered for load demand balancing of battery charger. Simulation results using MATLAB shows MPPT realization and power supplementation by variable wind speed and irradiance during different values of load demand.