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混联式混合动力汽车控制策略开发与仿真研究 总被引:4,自引:0,他引:4
阐述了切换式混联混合动力汽车系统特点和控制模式。对该种混合动力汽车起步工况、正常行驶工况、减速工况和故障工况等工作模式进行了分析。利用PSAT软件建立了仿真模型,对整车性能仿真分析。通过与串联式ZK6108HGD混合动力客车进行对比,验证了仿真模型的准确性。 相似文献
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对混合动力技术的汽车在行驶中的几种典型工况进行了分析;根据汽车典型行驶工况及低压电器设备使用频度系数,对电气系统常用低压电器设备的电量进行建模仿真比较,并以此选择适合整车的供电电源;根据不同车速与车用蓄电池的关系,选择满足混合动力低压电器设备的发电机、蓄电池。通过仿真分析,提高了混合动力电动汽车电气系统的安全性、可靠性和设计合理性。 相似文献
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基于模糊控制和电力辅助控制两种混合动力汽车能量控制方法,以某并联式混合动力汽车为对象,建立了正常行驶工况下的能量控制策略,并在MATLAB/Simulink仿真平台下进行了仿真分析,为实际系统的开发提供测试平台. 相似文献
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文章基于上海市区道路行驶循环进行了混合动力汽车的燃油经济性能仿真研究。具体内容包括动力部件的选型、控制策略的制定以及对混合动力汽车性能仿真结果的研究分析。在理论上阐述了改善混合动力汽车燃油经济性的方法以及混合动力汽车相对于传统燃油汽车的显著优势,为控制策略的具体制定奠定了基础。 相似文献
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By considering the effect of the driving cycle on the energy management strategy (EMS), a fuzzy EMS based on driving cycle recognition is proposed to improve the fuel economy of a parallel hybrid electric vehicle. The EMS is composed of driving cycle recognition and a fuzzy torque distribution controller. The current driving cycle is recognized by learning vector quantization in driving cycle recognition. The torque of the engine and the motor is controlled by a fuzzy torque distribution controller based on the required torque of the hybrid powertrain and the battery state of charge. The membership functions and rules of the fuzzy torque distribution controller are optimized simultaneously by using particle swarm optimization. Based on the identification results of driving cycle recognition, the fuzzy torque distribution controller selects the corresponding membership function and rule to control the hybrid powertrain. The simulation research based on ADVISOR demonstrates that this EMS improves fuel economy more effectively than fuzzy EMS without driving cycle recognition. 相似文献
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分析混合动力汽车传动系统的能量流,对传动系统类型的选择、设计和控制策略的确定具有重要的意义。文章结合行驶工况和自身状态这2种因素,对3种传动系统的能量流进行了理论分析,为混合动力汽车传动系统类型的选择、设计以及控制策略的研究提供了方法和依据。 相似文献
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J. S. Kim S. M. Kim J. H. Jeong S. C. Jeong J. W. Lee 《International Journal of Automotive Technology》2016,17(5):865-872
In recent years, a hybrid electric vehicle (HEV) has been considered a successful technology. Especially, in case of a full HEV, the motor can drive the vehicle by itself at low velocity or assist the engine at high load. To improve the hybrid electric vehicle’s efficiency, a regenerative braking system is also applied to recover from kinetic energy. In this study, an experimental control apparatus was set up with a parallel hybrid electric vehicle mounted on a chassis dynamometer to measure ECU (engine control unit) and MCU (motor control unit) signals, including the current and state of charge in the battery. In order to analyze regenerative braking characteristics, user define braking driving cycle was introduced and carried out using different initial velocities and braking times. The FTP 75 driving cycle was then adapted under different initial SOC (state of charge) levels. The experiment data was analyzed in accordance with the vehicle velocity, battery current, instant SOC level, motor RPM, engine RPM, and then vehicle driving mode was decided. In case of braking driving cycle, it was observed that SOC were increased up to 1.5 % when the braking time and the velocidy were 6 second and 60 km/h, respectively. In addition, using the FTP 75 driving cycle, mode 1 was most frequently operated at SOC 65 conditions in phase 1. In phase 2, due to frequent stop-go hills, percentage of mode 1 was increase by 22 %. Eventually, despite of identity, it was shown that the characteristics of phase 3 differed from phase 1 due to the evanishment of the effects of initial SOCs. 相似文献
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以锂电池-超级电容构成的复合电源电动汽车为研究对象,在满足动力性能的前提下,为实现超级电容在合理的荷电状态(SOC)下承担高频率信号,且锂电池承担低频率信号的目标,建立了实时小波变换-模糊控制的能量管理控制策略。基于Matlab/Simulink和ADVISOR软件搭建整车模型,并在NEDC循环工况下进行仿真测试。仿真结果表明,与单一锂电池相比,在小波变换-模糊控制策略下,复合电源锂电池的驱动峰值电流降低了20.68%,寿命提高了16.74%。搭建了按一定比例缩小的复合电源系统试验平台,并在NEDC工况下进行试验验证。结果表明,小波变换-模糊控制策略对复合电源电动汽车的能量管理具有良好的控制效果。 相似文献
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为研究不同整车驾驶循环对车辆三效催化器热老化的效果差异,选取两辆配备同款发动机的满足国六排放标准的纯汽油车和油电混合动力车,分别进行AMA、SRC、WLTC和典型RDE循环,利用数据采集系统实时采集车辆运行参数和三效催化器床体温度。基于阿伦尼乌斯公式将不同循环16万km耐久性后的热老化程度量化为热损伤,并以RDE循环为参照基准,将不同测试循环行驶16万km换算成对应的实际道路等效行驶里程。研究结果表明:相同循环下,油电混合动力车三效催化器的16万km热老化程度低于纯汽油车;AMA和SRC循环对三效催化器造成的热老化程度明显高于相同行驶里程下的WLTC循环和RDE循环。纯汽油车以AMA循环或SRC循环进行16万km耐久老化,对三效催化器所造成的老化效果相当于在实际道路上行驶了51.84和60.30万km;油电混合动力车以AMA循环和SRC循环进行16万km耐久老化,对三效催化器造成的老化效果相当于在实际道路上行驶30.44和29.21万km。 相似文献
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Power distribution between an internal combustion engine and electric motors is one of main features of hybrid electric vehicles that improves their fuel economy. An equivalent fuel consumption minimization strategy can instantaneously identify the optimal power distribution by converting the battery power into the equivalent fuel power and minimizing the overall fuel consumption. To guarantee the effectiveness of the strategy, it is essential to find the proper value of the conversion factor used to obtain the equivalent fuel power. However, finding the proper value is not a straightforward process because it is necessary to consider the overall power conversion efficiencies and battery charge sustaining strategy for the target driving cycle in advance. In this study, a model-based parameter optimization method is introduced to find the optimal conversion factor. A hybrid electric vehicle simulation model capable of estimating fuel consumption was developed, and the optimal conversion factor was discovered using a genetic algorithm that evaluates its population members using the simulation model. A series of simulations and vehicle tests was conducted to verify the effectiveness of the optimized strategy, and the results show a distinct improvement in fuel economy. 相似文献