纯电动汽车驱动系统设计及仿真研究

Drive System Design and Simulation Research of Pure Electric Vehicle

纯电动汽车与燃油汽车相比,具有传动效率高、节能环保等优点。驱动系统是纯电动汽车的核心部件,决定了整车的动力性能和经济性能。对驱动系统进行整体设计,选取合理的系统控制策略并进行仿真具有重要意义。首先对驱动系统模型进行设计,建立了加速踏板、铅酸蓄电池、电机和传动系统的仿真模型。随后采用双闭环控制方法,利用MATLAB/Simulink对驱动系统模型进行仿真。研究表明:采用双闭环控制方法,汽车行驶速度曲线更加平滑,抗路面干扰能力更强。

Compared to pure electric vehicles and fuel cars,pure electric vehicles have the advantages of high transmission efficiency,energy conservation and environmental protection. Drive system is the core component of pure electric vehicles,determines the dynamic performance and economic performance of vehicle. It is of great significance for drive system overall design,selecting reasonable system of control strategy and simulation. The drive system model was design,andaccelerator pedal,lead-acid battery,motor and drive system simulation modelwereestablished. Then using double closed loop control method,the drive system model wassimulatedby MATLAB/Simulink. Study shows that using double closed loop control method can improve the dynamic performance and road surface disturbance resistance of pure electric vehicles.