六轮独立全电驱动车辆能量管理策略研究

Energy Management Strategy of 6WID Electric Vehicle

针对六轮独立全电驱动型车辆多电机控制方法灵活的特点,基于传统电动汽车能量管理技术,以车轮转矩为控制对象,提出了一种有助于提高六轮独立驱动车辆整车驱动效率的最优转矩分配策略。基于AVL CRUISE的仿真表明:相对于传统的平均转矩分配控制方法,车辆在最优转矩分配控制下能够获得较高于前者的驱动效率。为了保证车载有限能源在整车用电设备之间的高效流动,结合车辆任务剖面,以整车用电规划为基础,提出了一种能够最大限度地提高车辆行驶里程和用电设备工作时间的整车用电设备能量管理策略。

Aiming at the flexible multi-motor control method for 6WID full electric vehicle, an optimal torque distribution strategy, using wheel torque as the control object, was proposed to improve the driving efficiency for 6WID vehicle based on the tradi- tional electric vehicle energy management technologies. The simulation results based on AVL CRUISE show that the optimal torque distribution strategy can obtain higher driving efficiency, compared with the traditional method of average torque distribution. Meanwhile, in order to ensure the limited vehicle energy effectively flowing among the vehicle electric equipments, combining with the vehicle mission profile, a vehicle electric energy management strategy was put forward on the basis of the vehicle power planning, which could maximize the vehicle＇ s travel distance and the working time of the electric equipments.