48V 하이브리드 차량의 전기적 구조 최적화 기반 동력 관리 전략

Abstract

Adaptive safety system and electrification of powertrain for improving fuel efficiency have led to the rapid progress of electrification. Therefore, power consumption is also rapidly increasing, and the effect on fuel efficiency is also increasing. In this paper, we compare the efficiency of various electrical architectures. The efficiency of the electrical system can vary due to the arrangement of 12V / 48V batteries, DC-DC converters, and 12V / 48V loads. Therefore, Dynamic programming, which is a global optimization technique, was used for comparison of various electric architectures according to the arrangement of each of the components constituting the electrical architectures. Dynamic programming was performed for each architecture, and the fuel efficiency of each architecture was derived. As a result, the high efficiency electrical architecture was derived.