P1P3构型PHEV双电机协同制动能量回收策略研究

Research on energy recovery strategy of P1P3 PHEV dual motor cooperative braking

选择了配备有P1和P3的双电机插电式混合动力汽车(plug-in hybrid electric vehicle,PHEV)作为研究平台。在能量回收过程中,P1和P3电机可以同时进行,相比其他构型而言有着更加明显的能量回收优势。车辆制动过程中,当P1电机效率高于P3时,优先选用P1电机进行制动,P3电机提供剩余所需制动力;当P3电机效率高于或等于P1时,则优先选用P3电机进行制动,P1电机弥补剩余所需的制动力。以搭载AMT(电控机械制动变速箱)的双电机插电式混合动力汽车为研究对象,在保证制动安全性的前提下,为尽可能地回收能量,提出一种基于双电机能量回收的前后轴制动力分配、机电制动力分配以及双电机制动力分配的多级制动力分配策略。结合Matlab/Simulink搭建整车模型,并进行仿真分析。仿真结果显示,制动能量回收率最高能达到66.56%,回收效果良好。

A dual-motor plug-in hybrid electric vehicle(plug-in hybrid electric vehicle,PHEV)with P1 and P3 is chosen as the research platform.In the energy recovery process,the P1 and P3 motors can be performed simultaneously,providing a more significant energy recovery advantage than other configurations.During braking,when the P1 motor is more efficient than the P3 motor,the P1 motor is used in preference for braking and the P3 motor provides the remaining required braking force.However,when the P3 motor is more efficient than or equal to the P1 motor,the P3 motor is used in preference for braking and the P1 motor makes up for the remaining required braking force.The experiment is carried out on a dual-motor plug-in hybrid vehicle equipped with an AMT(electronically controlled mechanical brake transmission).In order to recover as much energy as possible while ensuring braking safety,a hybrid vehicle based on dual motors is proposed.Based on the distribution of dual-motor energy recovery for front and rear axle,electromechanical and dual-motor braking force,a multi-stage braking power distribution strategy is proposed.The whole vehicle model is established and analyzed by using Matlab/Simulink.The simulation results show that the braking energy recovery strategy proposed in this paper can reach 66.56%,and the recovery effect is good.