基于自适应遗传算法的某款纯电动汽车智能发电策略分析  

Analysis on Intelligent Power Generation Strategy of Electric Vehicle Based on AGA

作　　者：余东 YU Dong(School of Intelligent Manufacturing and Automobile,Chengdu Vocational&Technical College of Industry,Chengdu 610000,China)

机构地区：[1]成都工业职业技术学院智能制造与汽车学院,四川成都610000

出　　处：《汽车实用技术》2023年第2期1-6,共6页Automobile Applied Technology

基　　金：2021年成都工业职业技术学院校级自然科学科研课题“基于自适应遗传算法的纯电动汽车智能发电仿真研究”(2021YJ-28)。

摘　　要：纯电动汽车动力电池容量有限,这是困扰其大力推广关键因素之一,若一味提升电池容量将大大提高整车成本。因此,在纯电动汽车动力电池容量不变和保证车辆行驶舒适安全前提下,提出续航里程提升策略至关重要。文章提出通过搭载风力发电机和制动回馈电机发电策略有助于续航,分析风力发电与制动能量回馈影响因素并研究纯电动汽车风力发电与制动能量回馈系统控制模型结构后,充分考虑汽车所受阻力,电能转换效率提升方法,建立智能发电能量模型。最后采用遗传算法将空气湿度,制动强度,电池荷电状态,行车速度等因素作为决策变量,并在Matlab软件中仿真,得出了随着风力发电机与制动回馈电机平稳运转后,风力发电与制动能量回馈之和处于最佳发电值,验证了发电策略可提升动力电池的充电量,增大纯电动汽车的续航里程。The power battery capacity of electric vehicle is limited, which is one of the key factors troubling its promotion. If the battery capacity is blindly improved, the whole vehicle cost will be greatly increased. Therefore, under the premise that the power battery capacity of electric vehicle remains unchanged and the vehicle driving comfort and safety is guaranteed, it is very important to put forward the range improvement strategy. This paper proposes that the power generation strategy by loading wind generator and brake feedback motor is helpful for endurance, after analyzing the influence factors of wind power generation and braking energy feedback and studying the control model structure of pure electric vehicle wind power generation and braking energy feedback system,the intelligent power generation energy model is established by taking into full consideration the resistance of the vehicle and improving the efficiency of electric energy conversion. Finally, the genetic algorithm is used to take air humidity, braking strength, battery state of charge, running speed and other factors as decision variables, simulation in Matlab software, obtained with the wind generator and brake feedback motor after smooth operation, the sum of wind power generation and braking energy feedback is at the best generating value, which verifies that the power generation strategy can improve the charging amount of power battery and increase the driving range of pure electric vehicles.

关 键 词：纯电动汽车 遗传算法 智能发电 制动强度 电池荷电状态 MATLAB仿真 

分 类 号：U469[机械工程—车辆工程]