基于实际交通环境的电动汽车循环工况构建研究

Research on the Driving Cycle of EV based on the Actual Traffic Environment

目前国内循环工况研究主要依托于传统内燃机车辆及城市公交车辆方面,难以反映纯电动车辆及乘用车的实际运行状况。针对此问题,利用纯电动乘用车进行了循环工况构建的研究。以西安市实际交通环境为依托,利用BYD-E6纯电动车辆进行研究,根据实际交通环境状况,合理安排试验方案,基于滤波方法对原始数据进行初始处理,在合成阶段利用主成分分析法及聚类方法进行工况合成。最后进行了合成工况与试验数据的对比研究。结果表明合成的工况平均误差为5.7%说明本文建立的电动汽车城市循环工况能够真实反应西安市交通总体特征,所构建的行驶工况具有较高的真实性。

At present, the research on the Driving Cycle mainly depends on the diesel locomotive. It is difficult to reflect the actual operation status of pure electric vehicles. So we use the electric vehicles to construct the cycle. According to the actual traffic condition, we designed and implemented the experiment. The original data is processed by the filtering method. Using principal component analysis and cluster analysis to compositing the driving cycle. The results show that the average error is 5.7%. So we can say that the driving cycle can reflect the actual traffic characteristics and has certain practical value.