四轮轮式驱动电动汽车电气系统设计

Design of Electric System for Four-wheel Driving Electric Vehicles

在行驶过程中电动汽车需协调控制四个轮毂电机,行驶工况受到电机输出功率的影响较大。在对电动汽车的驱动电机及其动力学分析的基础上,完成了车辆行驶动力学方程的构建。据此获取主电路的负载电流及电压同电机功率、转速、车速间的匹配关系,并完成系统动力回路中关键元器件的电气参数的计算。在此基础上完成了四轮轮式驱动电动汽车的电气系统的设计。

Electric vehicles need to coordinate the control of four hub motors in the course of driving,and the driving conditions are greatly affected by the output powers of the motors.Based on analysis of the driving motors and dynamics of the electric vehicle,the vehicle driving dynamical equation is constructed,and the load current and voltage of the main circuit are obtained.The matching relationship with the motor power,speed and vehicle speed,and the calculation of the electrical parameters of the key components in the power circuit of the system are completed.On this basis,the electrical system design of the four-wheel driving electric vehicle is completed.