The Research On Control Strategy Of Hybrid Electric Vehicle Drivetrain System

Firstly, this paper gives an analysis on the types and hybrid configurations of hybrid electric vehicle, and summarizes the characters of all the driving types and their working conditions. Secondly, having a theoretic research on the classification of hybrid electric vehicle which could conduct the continuing research and exploitation of HEV as a tool of evaluation in the field of hybridization. Then gives an overview on hybrid drive train power management strategies. Lastly, the paper gives three kinds of control strategy researches for series, parallel and combined hybrid electric vehicles. For series HEV the paper gives a control strategy aiming at achieving the lowest fuel consumption. For parallel HEV, gives a method to find the hybridization rate which is not dependent of any driving cycles. For combined HEV, the paper gives an efficiency loss minimization strategy, the sole criterion is the efficiency loss at the current operating point, thus economic fuel consumption could be guaranteed for a wide variety of driving tasks and this strategy could apply into any kinds of HEV.