Numerical Investigation on Fuzzy Logic Control Energy Management Strategy of Parallel Hybrid Electric Vehicle

In order to further reduce fuel consumption, a double input and single output fuzzy logic controller has been established for the energy management of a parallel hybrid electric vehicle (HEV). In this paper, the fuel economy and ballen,.. state of c ha rge (SO( of vehicles has been numerically investigated under both NI])(g and \VIgIC driving cycles. Results showed that compared with the logic threshold control strategy, the Mel consumption under the Nil)C and \VIgIC driving cycles are reduced by 13.3% and 4.5%, respectively, mhen the to// y logic control strategy mas adopted. In addition, compared V}itli the logic threshold control strategy, the fluctuation of SOC variation of the fuzzy logic control strategy is much smaller under both driving cycle, which has a positive effect on increasing the effectiveness of the battery discharge, maintaining stability the battery operating, and extending the battery life. (C) 2019 The Authors. Published by Elsevier Ltd.