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以插电式混合动力客车(PHB)为研究对象,应用Isight构建PHB混合动力系统集成优化平台,并设计组合优化算法。基于优化结果,确定PHB混合动力系统参数,车辆燃油经济性提高约4.4%。 相似文献
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首先分析燃料电池的特性得出了动力总成结构配置的优化解决方案,并且根据设计性能要求进行动力总成主要部件基本参数设计;最后基于典型的客车循环工况,建立燃料电池混合动力系统的优化模型,采用序列二次规划算法对混合动力系统的两种能量管理策略进行优化仿真,其结果符合设计要求。 相似文献
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基于对混合动力汽车能量管理策略优化的目的,建立了丰田PnusPlug-in混合动力汽车的MATLAB/Simulink数学模型,用数学公式描述了系统优化控制问题,采用粒子群优化算法对该包含众多约束条件的非线性优化问题进行了求解,利用PSAT专业软件对比分析了基本型优化控制算法、改进型优化控制算法和规则控制算法等的控制效果及燃油经济性。结果表明,经过优化后的Plug-in混合动力汽车在不牺牲汽车各项性能的前提下能提高动力系统工作效率。 相似文献
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基于对混合动力汽车能量管理策略优化的目的,建立了丰田Prius Plug-in混合动力汽车的MATLAB/Simulink数学模型,用数学公式描述了系统优化控制问题,采用粒子群优化算法对该包含众多约束条件的非线性优化问题进行了求解,利用PSAT专业软件对比分析了基本型优化控制算法、改进型优化控制算法和规则控制算法等的控制效果及燃油经济性。结果表明,经过优化后的Plug-in混合动力汽车在不牺牲汽车各项性能的前提下能提高动力系统工作效率。 相似文献
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为使公交客车在载客量和工况多变的情况下发挥混合动力系统的节能潜力,提出了基于运行数据的混合动力客车动力系统参数优化方法。基于车联网数据,利用核主成分分析(KPCA)和粒子群优化(PSO)K均值聚类分析构建了具有代表性的某市公交客车行驶工况;针对公交客车运营中乘客人数随机变化的特点,建立基于最优拉丁超立方设计(OptLHD)的混合动力客车动力系统参数双层优化模型,内层采用Opt-LHD产生乘客人数,采用发动机最优控制策略将系统响应传递至外层优化算法。仿真结果表明,优化后的动力系统参数对不确定因素有更强的适应性,燃油消耗量较优化前平均减少9.97%。 相似文献
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混合动力作为一种低碳排放的解决方案,受到越来越多的关注.同时业界对混合动力系统布局分析和优化技术的需求也不断增加.Romax高级能量比较分析技术为提高混合动力系统效率指引了方向. 相似文献
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Jongryeol Jeong Namwook Kim Wonsik Lim Yeong-Il Park Suk Won Cha Myeong Eon Jang 《International Journal of Automotive Technology》2017,18(5):891-900
In a hybrid electric vehicle (HEV) system, it is an important issue on how to distribute the output power from multiple power generating components to operate a vehicle more efficiently. Many studies have been conducted on how to manage multiple power sources of a vehicle based on various optimization theories. In this study, an algorithm to calculate the optimization of a series HEV that has three power generating components, engine, battery and ultra-capacitor, is developed based on dynamic programming. Normally dynamic programming is applied to the optimization of power management and components sizing by estimating potential fuel economy for electrified vehicle such as HEV, Plug-in HEV or Fuelcell HEV. In contrast with most objective systems that have only two power generating components, the system in this study has three power sources. Since the system has three power sources, the number of state and control variables of optimization problem increases. Therefore the number of calculations increases unreasonably. To decrease the number and time of calculations, a new electric model that contains the both characteristics of battery and ultra-capacitor is developed with some assumptions. In comparison with the optimization algorithm which follows the theory of DP with no assumptions, the results from the newly developed algorithm has 1.04 % discrepancy in terms of fuel economy, even though the calculation time decreases to 4400 times less. 相似文献
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为了充分发挥混合动力汽车的优越性,文章以整车燃油经济性的评价为基础,通过分析混合动力汽车动力系统的组成,建立了燃油经济性最佳的数学模型;依据考虑汽车的动力性和动力电池的荷电系数要求,使用复合形优化方法对目标函数进行了优化:并利用具体车型对优化方法进行了验证。结果表明,100km油耗降低21%,经济性得到较大提高,动力性仍然保持设计要求?指出采用逆向求解的手段来获得汽车的燃油经济性,并以其为目标函数开发的优化设计系统,能较好地改善汽车的燃油经济性,此优化方法对普通汽车的传动系统优化也具有参考作用。 相似文献
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C. -L. Wang C. -L. Yin T. Zhang L. Zhu 《International Journal of Automotive Technology》2009,10(5):589-596
The powertrain of an ultra-capacitor-based parallel hybrid electric vehicle (HEV) was developed. Innovations, such as the
engine management system, floating ISG (Integrated Starter and Generator), electronic-controlled double-clutch system and
dual-driven air conditioning system were realized. Hybrid control strategies to improve the fuel economy and reduce emissions
were analyzed briefly. In order to ensure the vehicle emission performance, the engine management system calibration was performed.
The vehicle emission test was also conducted, showing that the vehicle emission satisfied the EURO III standard and has great
potential for improvement. The hybrid start test was introduced in detail. We realized the hybrid function and start parameter
optimization of the engine and ISG. 相似文献
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基于遗传算法的混合动力汽车参数多目标优化 总被引:5,自引:1,他引:4
针对混合动力汽车设计参数众多的状况,提出了一种对混合动力汽车传动系统参数和控制参数同时进行优化的多目标优化新方法--自适应遗传算法.在ADVISOR平台上,以一辆使用逻辑门限控制策略的并联混合动力汽车为例,分析并建立了以动力性能指标为约束的混合动力汽车参数优化的非线性规划模型,其目标函数包含最小油耗和最佳排放性能.针对遗传算法容易早熟等不足,采用带自适应交叉和变异算子的遗传算法和模拟退火技术相结合进行求解.仿真结果表明了所提出方法的有效性. 相似文献