电动汽车城市行驶工况构建

通过采集电动汽车及传统汽车的实际行驶数据,使用K-均值聚类法和马尔可夫链理论构建电动汽车与传统汽车城市行驶工况。构建出的城市行驶工况与当下较为流行的传统汽车的行驶工况进行比较。结果表明,电动汽车行驶工况与传统汽车行驶工况的加速度有较大的不同;这是因为电动汽车的电机扭矩响应速度快,低速时可以输出大扭矩。构建出的电动汽车行驶工况还可以作为评价电动汽车的经济性与碳排放的依据。

The development of electric vehicles urban driving cycle

Through collecting the actual driving data of electric vehicles and conventional cars, the urban driving cycles of conventional vehicles and electric vehicles are developed using K-means clustering and Markov chain theory. Electric vehicle urban driving cycles and the current popular conventional vehicle driving cycles are compared, the results shows that the EV driving cycle is different from the conventional vehicle. It is because the EVs have higher acceleration than the CVs at a low speed, and EVs can generate a maximum torque from a stop state but CVs generate a relatively lower torque. The driving cycle of EVs can be used to evaluate the performance of EVs.