不同工况下的混合动力汽车的整车性能研究-电气工程专业毕业论文.docx

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Dissertation for the Master Degree in Engineering
RESEARCH ON THE VEHICULAR PERFORMANCE OF HYBRID ELECTRIC VEHICLE OVER DIFFERENT DRIVING CYCLES
Candidate: Fu Jianfu
Supervisor: Associate Prof. Song Liwei
Academic Degree Applied for: Master of Engineering Affiliation: Electrical Engineering
Date of Defence: July, 2007 Degree-Conferring-Institution: Harbin Institute of Technology
摘 要
21 世纪以来,不可再生能源的过度消耗以及生存环境的日益恶化问题日益受到人们的关注。能源与环境已经是世界各国政府亟需解决的可持续发展的战略问题,因此开发低排放和低能耗的新型汽车成为当今世界汽车发展的方向。混合动力汽车是指以发动机、蓄电池和辅助动力单元作为动力源, 驱动车辆行驶。它既继承了石油燃料发动机的高比能量和高功率的长处,又发扬了纯电动汽车的节能和低排放的优点,成为了当今世界各国主要研究的车型和商品化的主流。
本课题是在国家“863”计划项目“解放牌混合动力客车”的背景下进行研究的。混合动力电动汽车与传统的内燃机汽车相比,只有在频繁的起动、加速、减速、怠速的工况下,才能体现其燃油经济性的优越性,因此本论文是针对具有代表性的工况进行分析和研究的。
本论文以双轴并联式混合动力汽车作为研究对象,根据要求的技术性能指标,合理地进行混合动力汽车总成部件的类型的匹配,并核算了主要部件例如发动机的功率、电机功率、电池组的电压等级以及变速器的参数。在选定汽车的总成参数后,针对混合动力汽车的发动机功率和电机功率的匹配问题以及车辆的参数进行研究,并计算不同循环行驶工况对整车的燃油经济性能的影响。然后在影响循环行驶工况的众多因素的指标中,利用主成分分析法找出影响燃油经济性指标的最重要的几个权重比,再通过 ADVISOR 的仿真计算来验证得出的主要成分对整车燃油经济性的影响。最后,根据针对循环工况做的研究建立基于循环工况的主成分参数为模糊输入变量的新型模糊控制策略,分析几种不同控制策略对汽车燃油经济性的影响,并进行仿真对比。
关键词 混合动力汽车;循环工况;主成分分析法;控制策略
Abstract
Since the 21st Century, due to the over consumption of non-renewable resource and worsening problem of living environment, people more and more concern about that. Energy and environment have been developed as a sustainable strategy which the governments of all over the world must solve as soon as possible. Therefore, the development of electric and hybrid vehicles which can improve the energy consumption and emission has taken on an accelerated pace. Hybrid Electric Vehicle (HEV) is a vehicle in which propulsion energy is available from two or more kinds or types of energy stores, sources or converters, and at least one of them can deliver electrical energy. It has inherited the strength of high energy density and high power density of IC cars. While, HEV, which also takes the advantage of electric drive to achieve the target of low discharge and s