文档介绍：摘要
随着环保和能源问题的口益突出,电动汽车以其零排放、低噪声等优点而倍受关注,世界各国都把电动汽车作为汽车工业的发展方向。
近年来,虽然许多国家都投入大量资金人力研究电动汽车,但目前为止动力电池和其它一些关键性技术还没有取得有效地突破,动力电池的续驶里程和充电时间大大制约了电动汽车的发展和普及。因此,在电池问题解决之前,如何合理地选择这些部件及有关参数,使匹配达到最优,在相同蓄电池条件下,更好地满足动力性要求和最大地增加续驶里程,一直是研究者们追求的目标,也是本论文研究的主要目的。
在这篇论文选取某种型号的电动汽车作为研究对象,在对其动力传动系统的参数设计进行分析研究的基础上,对电动汽车动力传动系统的参数进行了较为合理的、简洁的选择和匹配。
本论文还对电动汽车的核心部件牵引电机——三相异步交流电动机以及蓄电池的数学模型进行了分析;基于电动汽车的专用软件ADVISOR(Advanced Vehicle Simulation,高级车辆仿真器)建立了电动汽车的蓄电池、电动机、传动系、车身以及电动车辆的整车仿真模型,并用ADVISOR对模型进行了仿真试验,仿真结果验证了匹配参数和仿真模型的合理性。
本论文还针对仿真结果以及动力性要求和续驶里程要求,应用区间算法对传动系速比进行了优化设计和ADVISOR中的自动尺寸设计(Auto-size)对电动机效率、蓄电池容量、传动系传动比等主要参数进行了优化处理。同时,对于得到的优化结果予以仿真计算,得到了一些反映电动汽车性能的曲线,验证了优化结果的合理性及优化方法的有效性。
关键词 电动汽车;传动系统;遗传算法;优化;仿真分析
Abstract
There were increasing concerns about environmental and energy problems,electric vehicles have been developed for its benefit of zero emission and lownoise. Many countries make electric vehicles as the development direction ofautomobile industry.
Recently, although there are lots of countries which have launched into largefund and many talents to study electric vehicles, dynamic battery and certain keytechniques have not brought through effectively until now. The range and charging time of battery limited popularization and development of electric vehicles. Therefore how to select these parts and relational parameters reasonably makes the electric vehicle meet the request of dynamic performance and range,which is the goal people studied, then which is the important content of the papers.
In this paper, the method and principle of parameters design for electromotor, the ratio of power train and batteries capacity of electric vehicles were explored and discussed. Based on some type of EV, the parameters of power train of EVS were selected and designed more reasonably and pithily.
This paper studied key pacts' mathematics models of EV, such as electromotor, battery. Moreover, simulation models of whole vehicle and key pacts, such as battery, electromotor, vehicle b