Stochastic Dynamic Programming of Air Conditioning System for Electric Vehicles

Abstract

Air conditioning (AC) system, as a main electricity consumption unit among the Electric vehicle (EV) auxiliary devices, has significant effects on the electricity efficiency of EVs. An energy management strategy is critical to distribute the energy more reasonable and extend the driving range. In this paper, a Stochastic Dynamic Programming (SDP) control strategy is used to optimize the electricity consumption of AC system. To study the relationship between solar radiation and electricity saving of AC system, a thermal model of the cabin and a mathematical model of AC system have been built. The electricity consumption using SDP algorithm is 10.35% less than using a rule-based controller. Additionally, the fluctuation of cabin temperature is considerably reduced with an AC system controlled by SDP.