共查询到20条相似文献,搜索用时 187 毫秒
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文中以长安混合动力车为研究对象,借助仿真软件Advisor对长安混合动力汽车在典型工况下的排放进行理论研究与仿真分析。并完成了长安混合动力汽车的排放分析实验,对其稳态和瞬态下的排放进行实验与仿真的对比性分析研究。 相似文献
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在镍氢电池生热理论的基础上,根据混合动力汽车试验循环工况获得的充放电电流计算得到电池的生热功率,建立了电池组散热系统的散热模型。应用计算流体力学方法对电池组的温度场进行了数值模拟仿真分析,并进行了混合动力汽车试验循环工况下镍氢电池组的温度场试验。结果表明,模拟值与试验值吻合;电池组具有良好的散热效果,可满足混合动力汽车在生热、散热方面对镍氢电池的使用要求。 相似文献
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对混合动力汽车的驱动系统选型设计进行了详细的研究,合理地制定了整车控制策略.通过仿真软件Advisor2002,基于常用城市工况CYC-NEDC对该混合动力汽车进行了仿真.结合仿真结果,对其动力性能、排放性能以及电池的充放电状态进行了研究分析. 相似文献
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EQ6110HEV并联混合动力系统参数匹配及性能研究 总被引:4,自引:0,他引:4
阐述了EQ6110HEV并联混合动力总成结构和采用的控制策略,提出了并联混合动力汽车动力传动系统参数匹配方法及过程,分析了电机峰值功率及基速点的选取对汽车动力性和经济性的影响。并将匹配方案仿真结果与试验结果进行比较,结果说明该匹配方法正确可行,可为动力总成优化提供理论依据。 相似文献
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混合动力电动汽车制动系统回馈特性仿真 总被引:5,自引:1,他引:5
为了研究混合动力电动汽车(HEV)回馈制动特性,建立了用于城市公交的混合动力电动汽车复合制动系统的仿真模型,提出了回馈制动控制策略,分析了复合制动系统的工作过程,并探讨影响电动汽车制动系统可靠、安全和高效的主要因素,研究电动汽车复合制动系统优化途径。研究结果表明:回馈制动最低车速限值越小,制动能量回收率越大;从回收电动汽车能量角度分析,回馈制动比例应有一个有效范围值;在各种循环工况下,具有回馈制动功能时混合动力电动汽车城市客车单位里程的能量消耗可降低10%~25%。 相似文献
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The relationship between voltage and current inside a battery, or the impedance, plays an important role in the simulation
and design of hybrid electric vehicle (HEV) power systems. This paper proposes a new approach employing the Bode plot for
evaluation of equivalent circuit parameters for a lithium polymer battery (LiPB) for HEV application. The main concept of
the proposed circuit-parameter-based model approach is the application of a transfer function used to process the frequency
response of the battery for calculation of accurate circuit parameters. Additionally, the Bode plot is also applied to derive
the impedance-based model directly from frequency response measurements for short time simulations and practical use in the
HEV. Two methods for battery modeling are proposed and verified experimentally with the voltage-current profile of a conventional
HEV using the battery measured in this paper. The results show that the proposed circuit-parameter-based technique provides
a satisfactory battery equivalent circuit model. 相似文献
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HEV控制器硬件在环仿真平台的研究与开发 总被引:3,自引:0,他引:3
针对控制器传统开发方法中存在的局限性以及混合动力汽车动力传动系统控制的复杂性,应用控制系统现代开发技术,为某型混合动力客车多能源动力总成控制器开发了硬件在环仿真测试平台,该平台包括实时硬件和系统模型、信号调理电路等,并利用它对控制器进行了仿真测试。仿真测试结果与试验结果说明,所开发平台模型的精度基本能够满足仿真测试要求。控制器的环境试验和在EMC试验中的成功应用以及控制器在车上的正常运行,验证了在混合动力汽车多能源动力总成控制器的开发过程中采用自行开发硬件在环仿真测试平台这一技术方案的可行性。 相似文献
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D. B. Jung S. W. Cho S. J. Park K. D. Min 《International Journal of Automotive Technology》2016,17(2):339-346
A modified thermostatic control strategy is applied to the powertrain control of a parallel mild hybrid electric vehicle (HEV) to improve fuel economy. This strategy can improve the fuel economy of a parallel mild HEV by operating internal combustion engine (ICE) in a high-efficiency region. Thus, in this study, experiments of a parallel mild HEV were conducted to analyze the characteristics of the hybrid electric powertrain and a numerical model is developed for the vehicle. Based on the results, the thermostatic control strategy was modified and applied to the vehicle model. Also, battery protection logic by using electrochemical battery model is applied because the active usage of battery by thermostatic control strategy can damage the battery. The simulation results of the vehicle under urban driving conditions show that the thermostatic control strategy can improve the vehicle’s fuel economy by 3.7 % compared with that of the conventional strategy. The results also suggest that the trade-off between the fuel economy improvement by efficient ICE operation and the battery life reduction by active battery usage should be carefully investigated when a thermostatic control strategy is applied to a parallel mild HEV. 相似文献