Prototype Development of Hybrid PV Wind System for Range Extension in EVs with BMS

Abstract

In recent years there is an increase in the usage of electric vehicles. Compared to the conventional vehicle which use petrochemical to run, electric vehicles use the energy stored in the batteries to move forward. Due to this electric vehicle produce less pollution. Even though they are less polluting they do have their fair share of problems. The battery used in the EVs are made with rare earth metals not only costly but some of them are toxic. The battery in these EVs need a special care for their proper working. Generally, EVs use lithium-based batteries which has high energy density, less weight, compact, more charge cycles, no memory effect when compared to other types of batteries. In electric vehicles the Battery Management System takes care of the battery. BMS considers parameters like temperature, State of Charge, State of Health, Overvoltage and undervoltage protection, overcurrent and undercurrent protection. BMS also have a balancing system which do maintenance the proper SoC of all the cells in the Battery. This paper presents a new way to charge a EV using unconventional energy sources. Simulation and prototype of battery charging using wind and solar PV system is done. Active and passive balancing is simulated and the results are shown.