PV ARRAY-BASED OFF-BOARD ELECTRIC VEHICLE BATTERY CHARGER
Abstract
In recent years, the automobile industry is in rapid growth with the evolution of electric vehicles. The battery charging system is playing a major role in the development of Electric vehicles. Charging of EV batteries from the grid increases its load demand. This leads to a proposal for a photovoltaic array-based off-board EV battery charging system. Using the SEPIC converter and three-phase bidirectional DC–DC converter, the proposed system is capable of charging the EV battery during both sunshine hours and non-sunshine hours. During peak sunshine hours, the backup battery gets charged along with the EV battery and during non-sunshine hours, the backup battery supports the charging of the EV battery.Irrespective of solar irradiations, the EV battery is to be charged constantly which is achieved by employing a backup battery in addition to the PV array. The proposed charging system is simulated using Simulink in the MATLAB software and the results are furnished.
Keywords
three-phase bidirectional DC-DC converter, battery, Maximum power point tracking, SEPIC converter