基于串联式增程汽车多种工况的优化控制策略

Optimal Control Strategy Based on Multiple Working Conditions of Series Range-extended Vehicle

增程式汽车是纯电动汽车搭载增程器(发动机、发电机和整流装置组成的辅助动力装置),当蓄电池电量充足时,汽车以纯电动模式行驶;电量不足时,启动增程器,利用增程器发电给蓄电池充电或直接驱动电机,从而增加电动汽车的续驶里程。基于增程器的串联混动技术已成为解决新能源汽车里程焦虑的有效途径。本文介绍基于串联式增程电动汽车在不同工况下的优化控制方法。

Range-extended hybrid vehicle is an electric driven vehicle equipped with a range extender device( an auxiliary power device consisting of an engine, a generator and an inverter). When the battery is fully charged, the vehicle runs in pure electric mode. When the electric battery SOC(state of charge) is insufficient, it cranks the range extender and utilizes it to generate electricity to charge the battery or directly drive the traction motor, thus increasing the driving range of the electric vehicle. Series hybrid technology based on range extender has become an effective way to solve the mileage anxiety of electric driven vehicles. This paper presents a practical control method of series range extended electric vehicles under different working conditions.