Research Background

Electrification has rapidly become one of the industry's important global megatrends, contributing to the disruptive period in the automotive and mobility industries. The year 2027 appears to be a tipping point, after which pure electric vehicle (PEV) sales will accelerate substantially. The worldwide battery-powered passenger car sales projection for 2030 is 23.5 million—about 26.4% of the world's 89 million car sales. Therefore, the innovative breakthrough in pure electric vehicular technology could boost its production and social adaptability, which will reduce its production cost. This zero-emission EV have significant social and environmental benefits. Individuals' driving habits have a direct effect on the amount of energy released by the battery. To extend the life of lithium-ion batteries and ensure their optimal performance under harsh driving conditions, the design of an appropriate DC-DC converter is required to suitably interface a supercapacitor (SC) with a PEV's drive train. An appropriate selection of powertrain components (size of battery, SC, DC-DC converter, inverter) and corresponding control strategies are essential to achieve higher energy efficiency and higher reliability of the drive system. There is additional flexibility to optimize powertrain systems by using energy management algorithms by minimising objectives such as HESS mass, battery state of health, and overall system cost.

This project aims to develop a bidirectional DC-DC converter for a battery-supercapacitor-powered EV and its power management strategies for standard drive cycles. The optimal sizing of pure EV powertrain components and power management strategies is expected to give an excellent dynamic performance with improved efficiency for Electric Passenger Car.