Efficiency-based control strategy of dual-mode hybrid vehicle

Abstract

Now most of the instantaneous optimization for the power distribution of hybrid vehicle needs heavy calculation, which makes it difficult to be used on-line. Therefore, the instantaneous strategy which needs less computation is studied in this paper. The power split path is analyzed and the efficiency model is established based on a special dual-mode power-split hybrid vehicle. Using the efficiency model, a three-dimension lookup table is obtained through off-line genetic algorithm optimization. The three-dimension lookup table can be used in on-line controller to achieve real-time optimization. The control strategy is testified through the hardware-in-loop simulation. Index Terms-dual-mode hybrid electric vehicle, transmission efficiency, control strategy, genetic algorithm, hardware-in-loop simulation.I.