Research On The Control Strategy Of Plug-in Hybrid Electric Vehicle

The vehicle control strategy of plug-in hybrid electric vehicle is researched in this paper,which is developed by a project of plug-in hybrid electric vehicle.The research object is based on multimode transmission plug-in hybrid electric vehicle,and its target is to develop industrial control strategy,which is focus on the vehicle economic,driveability performance.There are four parts content are proposed in this paper.1.Research on the configuration characteristic of multimode transmission vehicle system,and the drive motor,battery,engine,generator powertrain parameter matching works are carried out,which is constraint by the economic,driveability performance.the general process of parameter matching of this kind of plug-in hybrid powertrain configuration is obtained.2.The dynamic programming method(DP)is used to study the control strategy of plug-in hybrid vehicles,and get the global optimization results under some driving cycles.Optimize the distribution of control mode following driving torque and speed under different battery SoC states,which provides direction guidance for the development of rule-based hybrid control strategy.3.From the perspective of assembly capacity and drive demand,and by referring to the global control strategy optimized by dynamic programming method,a Rule-based hybrid energy management strategy is proposed in this paper.The strategy includes the energy management strategy of the vehicle at different hybrid driving stages and the power distribution strategied of the assembly at different stages.4.In order to verify the effectiveness of rule-based control strategy,the simulation study of control strategy is carried out.The plant,driver and environment models are developed.The simulation are carried out at the typical working cycles.The results are consistent with the trend of DP simulation results,and the results show that the developed control strategy is effective.