Isolated step-down DC -DC converter for electric vehicles

International Automobile Scientific Forum (IASF-2017) Intelligent Transport Systems

Kukovinets, O.V.^1 ; Sidorov, K.M.^1 ; Yutt, V.E.^1

MADI University, Moscow, Russia^1

关键词: Comprehensive analysis;    Computational researches;    Converting equipment;    High voltage batteries;    LLC resonant converter;    Step-down dc-dc converters;    Technical solutions;    Traction equipments;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/315/1/012015/pdf
DOI  :  10.1088/1757-899X/315/1/012015

来源: IOP

【 摘 要 】

Modern motor-vehicle industrial sector is moving rapidly now towards the electricity-driving cars production, improving their range and efficiency of components, and in particular the step-down DC/DC converter to supply the onboard circuit 12/24V of electric vehicle from the high-voltage battery. The purpose of this article - to identify the best circuitry topology to design an advanced step-down DC/DC converters with the smallest mass, volume, highest efficiency and power. And this will have a positive effect on driving distance of electric vehicle (EV). On the basis of computational research of existing and implemented circuit topologies of step-down DC/DC converters (serial resonant converter, full bridge with phase-shifting converter, LLC resonant converter) a comprehensive analysis was carried out on the following characteristics: specific volume, specific weight, power, efficiency. The data obtained was the basis for the best technical option - LLC resonant converter. The results can serve as a guide material in the process of components design of the traction equipment for electric vehicles, providing for the best technical solutions in the design and manufacturing of converting equipment, self-contained power supply systems and advanced driver assistance systems.