A High-Frequency Isolated Converter for Efficient Energy Transfer in Electric Vehicle Storage Systems

Abstract

The growing need of power conversion efficiency in the system of electric vehicle (EV) energy storage systems is driving the design of more complex isolated DC-DC converter based designs. This paper outlines the design of a high-frequency isolated converter which is meant to perform the efficient energy transfer at a higher dynamic performance and less power losses. In order to achieve galvanic isolation, but at the same time allow compact format and greater power density, the proposed topology makes use of a high-frequency transformer. Proportional-integral (PI) regulation and model predictive control (MPC) control strategy is applied to achieve the stability of the output voltage and the optimization of transient response to the change in the load conditions. The converter is simulated and tested under a real EV operating condition through simulation tools. The findings show an efficacy peak of 95-97 percent, dominant diminution in switching and conduction losses, and enhanced dynamic reaction, with rapid establishing time and minimal voltage ripple as opposed to the traditional ones. The proposed system can also be able to operate with relative stability to a large range of input voltages and load changes. This information demonstrates that the high-frequency isolated converter has been developed is a potential solution to next-generation EV energy storage applications having a high level of efficiency, reliability, and scalability to be used in real-world applications.