High current density DC-DC converter with Modified PI controller for fast charging applications in EVs

Abstract

As electric vehicles (EVs) become increasingly prevalent, the demand for efficient and high-performance DC–DC converters in the charging infrastructure is paramount. Electric vehicles, powered by rechargeable batteries or fuel cells, hence is necessary to have a cost-effective and efficient battery charger to deliver the consistent output current needed for the designated EV's battery. This paper adds a new and more effective approach of design and control of a DC–DC converter with bidirectional capability appropriate for incorporation in EV charging systems aimed at enhancing the current density and control issues inherent in the charging /discharging process. It appears to provide the necessary high current density besides battery out as soon as possible and also to impose an unimportant overshooting of the charging time for demanded lithium-ion battery system while charging it. The converter circuit contains the following equipment in its construction include single phase AC voltage source, linear transformer, passive component that includes the inductor and capacitor and bridge rectifier. Usually, Simulink/MATLAB is used for the purpose of various simulations. Using the MATLAB simulation the design of the concept system offered in this proposal has been proved. Monitored the current in amperes that the battery charger is supplying to the battery, closely observed the condition and voltage of the battery.