Recently,plug?in hybrid electric bus has been one of the energy?e cient solutions for urban transportation. However,the current vehicle e ciency is far from optimum,because the unpredicted external driving conditions ...Recently,plug?in hybrid electric bus has been one of the energy?e cient solutions for urban transportation. However,the current vehicle e ciency is far from optimum,because the unpredicted external driving conditions are di cult to be obtained in advance. How to further explore its fuel?saving potential under the complicated city bus driving cycles through an e cient control strategy is still a hot research issue in both academic and engineering area. To realize an e cient coupling driving operation of the hybrid powertrain,a novel coupling driving control strategy for plug?in hybrid electric bus is presented. Combined with the typical feature of a city?bus?route,the fuzzy logic inference is employed to quantify the driving intention,and then to determine the coupling driving mode and the gear?shifting strategy. Considering the response deviation problem in the execution layer,an adaptive robust controller for electric machine is designed to respond to the transient torque demand,and instantaneously compensate the response delay and the engine torque fluctuation. The simulations and hard?in?loop tests with the actual data of two typical driving conditions from the real?world city?bus?route are carried out,and the results demonstrate that the pro?posed method could guarantee the hybrid powertrain to track the actual torque demand with 10.4% fuel economy improvement. The optimal fuel economy can be obtained through the optimal combination of working modes. The fuel economy of plug?in hybrid electric bus can be significantly improved by the proposed control scheme without loss of drivability.展开更多
针对混合动力汽车(Hybrid Electric Vehicle,HEV)的能量进行合理管理,能有效提高能量的利用率,减少有害废气的排放。针对单轴并联式混合动力汽车,在对能量平衡分析的基础上,以提高发动机效率和降低油耗为目标,采用电机来平衡发动机上的...针对混合动力汽车(Hybrid Electric Vehicle,HEV)的能量进行合理管理,能有效提高能量的利用率,减少有害废气的排放。针对单轴并联式混合动力汽车,在对能量平衡分析的基础上,以提高发动机效率和降低油耗为目标,采用电机来平衡发动机上的能量需求,从而控制发动机工作在高效区,并确定了发动机高效区的边界条件。然后,制定了能量平衡控制规则,进行了仿真对比分析。结果表明,与电辅助控制策略相比,能量平衡控制策略中HEV百公里油耗量降低了6.1%,发动机效率提高了8.1%,电机效率提高了10%。展开更多
基金Supported by National Natural Science Foundation of China(Grant No.51605243)National Key Science and Technology Projects of China(Grant No.2014ZX04002041)1-class General Financial Grant from the China Postdoctoral Science Foundation(Grant No.2016M590094)
文摘Recently,plug?in hybrid electric bus has been one of the energy?e cient solutions for urban transportation. However,the current vehicle e ciency is far from optimum,because the unpredicted external driving conditions are di cult to be obtained in advance. How to further explore its fuel?saving potential under the complicated city bus driving cycles through an e cient control strategy is still a hot research issue in both academic and engineering area. To realize an e cient coupling driving operation of the hybrid powertrain,a novel coupling driving control strategy for plug?in hybrid electric bus is presented. Combined with the typical feature of a city?bus?route,the fuzzy logic inference is employed to quantify the driving intention,and then to determine the coupling driving mode and the gear?shifting strategy. Considering the response deviation problem in the execution layer,an adaptive robust controller for electric machine is designed to respond to the transient torque demand,and instantaneously compensate the response delay and the engine torque fluctuation. The simulations and hard?in?loop tests with the actual data of two typical driving conditions from the real?world city?bus?route are carried out,and the results demonstrate that the pro?posed method could guarantee the hybrid powertrain to track the actual torque demand with 10.4% fuel economy improvement. The optimal fuel economy can be obtained through the optimal combination of working modes. The fuel economy of plug?in hybrid electric bus can be significantly improved by the proposed control scheme without loss of drivability.
文摘针对混合动力汽车(Hybrid Electric Vehicle,HEV)的能量进行合理管理,能有效提高能量的利用率,减少有害废气的排放。针对单轴并联式混合动力汽车,在对能量平衡分析的基础上,以提高发动机效率和降低油耗为目标,采用电机来平衡发动机上的能量需求,从而控制发动机工作在高效区,并确定了发动机高效区的边界条件。然后,制定了能量平衡控制规则,进行了仿真对比分析。结果表明,与电辅助控制策略相比,能量平衡控制策略中HEV百公里油耗量降低了6.1%,发动机效率提高了8.1%,电机效率提高了10%。
