An Integrated Design and Control Optimization Framework for Hybrid Military Vehicle Using Lithium-Ion Battery and Supercapacitor as Energy Storage Devices

摘要

One of the existing challenges toward the electrification of military vehicles is the selection of the most suitable energy storage device. Moreover, a single energy storage technology might not provide the most benefit out of powertrain electrification. In this paper, a generalized framework for the simultaneous selection of the optimal energy storage device, in the form of a standalone or hybrid solution, and online energy management is presented. This paper investigates the cooperation of energy-dense Li-ion batteries and power-dense supercapacitors to assist engine operation in a series hybrid electric military truck. Pontryagin's minimum principle is adopted as the energy management strategy in a forward-looking vehicle simulator, in which the optimal design and control parameters are found using particle swarm optimization. Simulation results show that adopting a hybrid energy storage system reduces fuel consumption by 13% compared to the case of battery-only hybridized powertrain.