基于室内台架的电动汽车行驶工况仿真及测试

Simulation and Test of Electric Vehicle Driving Cycle Based on Test Bench

电动汽车行驶工况仿真台架系统由牵引电机-测功机试验台架、动力电池组及管理系统和计算机数据采集及控制系统组成。台架系统模拟实验时,将电动汽车的车辆参数及行驶工况输入到计算机进行处理,由开发的测试软件实时计算出模拟行驶工况运行时的电机负载扭矩,并通过接口电路输出到测功机,控制测功机加载扭矩的变化,从而实现对牵引电机的变负荷控制。试验表明,台架系统能够真实地模拟汽车的行驶工况运行状态,并在不同的行驶工况下测试电动汽车的续驶里程及能耗。

The electric vehicle driving cycle simulation system consists of three parts-the driving motor-dynamo test bench,the power battery packs and battery management system,and the computer data acquisition and control system.The vehicle parameters and driving cycles were acquired and processed in computer,and then the motor load torque in simulating the driving cycle running of vehicles was calculated by the system software.Afterwards,control signals were given to the dynamo simultaneously through the interchange circuit.Therefore,the driving motor load can be changed by controlling the torque of the dynam.The result shows that the real driving running status of the electric vehicle can be simulated on the platform,and that the driving range and energy consumption can be tested in different speeds and driving cycles of the vehicles.