论文标题:燃料电池/蓄电池双能源电动汽车动力系统匹配的研究
Study on Power Matching of Fuel Cell/Battery Hybrid Vehicle
论文作者 曹文明
论文导师 冉振亚,论文学位 硕士,论文专业 车辆工程
论文单位 重庆大学,点击次数 134,论文页数 89页File Size5901k
2004-05-10论文网 http://www.lw23.com/lunwen_321147612/ 双能源电动汽车; 动力匹配; 控制策略; 功率跟随模式; 仿真研究
Double Source EV, Power Matching, Control Strategy, Power Follower,Simulation Research.
石油资源短缺和环境污染是当今世界的两大突出问题，为了解决这两个问题，很多国家致力于发展节能环保车辆，在当今电动汽车是解决这两大问题的重要途径之一。然而在当前阶段，纯电动汽车所采用的蓄电池体积大、能量密度低、充电时间长等缺点制约了电动汽车的发展；虽然近年来快速发展的质子交换膜燃料电池由于其能量转化效率高、能量密度大、无须充电、零排放等优点被采用在电动汽车上，但其价格昂贵、冷启动性能差、后备功率不足等缺点限制了其在汽车上应用。因此，研究由燃料电池和蓄电池组成的混合动力作为电动汽车的动力具有很实际的意义，国外同行们已经在进行这方面的研究。为了能更好地发挥出这种混合动力的优越性，对这种混合动力汽车动力系统的合理匹配就显得非常重要，本文就以下方面的问题开展了研究工作： 首先，在总结相关资料的基础上，提出了燃料电池／蓄电池双能源电动汽车性能指标的确定方法，进行了燃料电池／蓄电池双能源电动汽车动力总成的选型、参数选择。为了便于比较，以福特Focus电动汽车为目标进行了动力系统的改装，进而确定动力系统的参数。 其次，对仿真应用软件ADVISOR进行了研究，在ADVISOR的基础上针对国内产品的特点进行了改进，使它能够适合对燃料电池／蓄电池双能源电动汽车进行仿真。 第三，对燃料电池／蓄电池双能源电动汽车动力控制系统进行了研究，就采用两种不同控制策略下不同的驱动模式进行了分析。详细研究了功率跟随模式控制策略在ADVISOR仿真软件中的实现。 最后，结合以上研究的内容，应用改进后的仿真软件对该双能源电动汽车进行了仿真。仿真结果表明各动力总成的匹配能够满足各项性能指标，并且比原Focus电动汽车具有更优的动力性；根据不同SOC初值状态下的双能源电动汽车性能仿真验证了动力系统功率的分配是完全按着功率跟随模式控制策略来进行分配。文章最后对采用不同混合度的电动汽车性能进行了对比，从而进一步验证了所确定参数的合理性。 综上所述，本文针对燃料电池／蓄电池双能源电动汽车进行了动力总成的选型、参数确定，并且提供了相应的基本依据。所以本文的研究成果对推动我国新型混合动力电动汽车的研究具有一定的现实意义。
Oil deficiency and environment pollution are two crucial and global problems. Many countries are developing energy saved and environment protection vehicles in order to resolve those two problems. Electric vehicle (EV) is now becoming one of the developing trends of the automotive industry. However, at present, the battery taken by EV has the disadvantage of big volume, low energy density and long time to charge, And all these limit the development of EV. In resent years, the proton exchange membrane fuel cell (PEMFC) with its high conversion efficiency, high energy density, and no charge is taken on EV; But with the disadvantage of expensive, worse cold startup performance and shortage power in support. So to research with fuel cell and battery as power of EV has very fact significance, and this has been studied in overseas corporations. For the sake of exerting its superiority, it is important to match reasonably this hybrid system. This paper includes several researches as follows:Firstly, Based on relative references, the method for selecting the performance target of fuel cell/battery hybrid vehicle is proposed, and the theories and methods for parameter design of fuel cell/battery hybrid vehicle powertrain are presented. For the sake of comparing, the powertrain of the Focus are redone, and the parameters of powrtrain are confirmed.Secondly, the simulation application software Advanced Vehicle Simulator (ADVISOR) has been studied. At the basis of ADVOSOR, this software is improved for the characteristics of home products, so that it can simulate for the fuel cell/battery hybrid vehicle.Thirdly, the power control system of this hybrid vehicle is researched, and the drive mode with different control strategies is analyzed. The power follower strategy is realized in the software ADVISOR.Finally, combining the above researching with each other, we use the re-developed simulation software to simulate the performance of this hybrid vehicle. The results show that the matching of this power system are reasonable and can satisfy the performance target. The dynamics performance of this hybrid vehicle is more excellent than the Focus. According to the performance of different SOC, it can be validated that the power is distributed with power follower strategy. In the end of thesis, the performance of this hybrid vehicle with different hybrid scale, furthermore, it can validate that theparameter confirmed is very reasonable.Combining the above researching, the type of power assembly is selected and the parameter is ascertained, and the corresponding proof is provided in this paper. So, it has a certain of realistic meaning to push the research of our new hybrid vehicle.
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