Energy Management in a Vehicle with a Dual Storage Power Net

In the near future, a significant increase in electric power consumption in vehicles will occur. To limit the associated increase in fuel consumption and exhaust emissions, smart strategies for the generation, storage/retrieval, distribution, and consumption of electric power will be used. This paper deals with an advanced power net with two storage devices: a lead-acid battery and a super capacitor, whose advantages can be combined. Two methods to control such a power net are presented: global optimization using full knowledge of the future driving pattern and an online implementable strategy doing without future knowledge. Both methods involve mixed integer optimization. The performance of the real-time strategy is close to the global optimum.