동적 계획법을 이용한 48 V 마일드 하이브리드 시스템의 최적 구조 탐색 동적 프로그래밍을 이용한 최적의 마일드 하이브리드 시스템 아키텍처 탐색

Abstract

In this paper, we explore the optimal 48 V mild hybrid system architecture using dynamic programming. The 48 V mild hybrid system generally adopts a parallel hybrid configuration with various architectures depending on the arrangement of the motors. Therefore, we select and explore various system architectures, considering single motor, dual motor, and electric supercharger configurations. Evaluation of mild hybrid systems primarily focuses on fuel economy. However, driving performance is also an important criterion because mild hybrid systems are applied to a variety of vehicles, ranging from mini vehicles to luxury vehicles. Additionally, the ability to support electrical loads must be considered, as electrical loads are increasing significantly due to advancements in convenience and safety functions. Therefore, in the evaluation of each system architecture, performance indices are introduced to assess not only fuel economy but also the electric load support ability and reserve driving power, presented as equivalent fuel consumption.