A diesel engine of conventional trucks has a low efficiency under the idling condition,leading to a high cost for heating or cooling in the cab during night. The solution to this problem will have great significance o...A diesel engine of conventional trucks has a low efficiency under the idling condition,leading to a high cost for heating or cooling in the cab during night. The solution to this problem will have great significance on energy conservation and emission reduction. A new auxiliary power unit of solid oxide fuel cell( SOFCAPU) with high efficiency solves this problem perfectly. Heat pump air conditioner is considered as a promising device for the application of SOFC-APU with a high cooling and heating efficiency. To make a quantitative analysis for the application of SOFC-APU,a model is built in Matlab / Simulink. The diesel engine model and SOFC-APU model are fitted based on some experimental data of SOFC-APU and diesel engine during the idling operation. An analysis of the application of SOFC-APU on different trucks in Northeast China is comprehensively made,including efficiency and emission.展开更多
This paper is concerned with the development of electronic controller for turbine POwer units. In order to increase the reliability of the POwer unit, three control loops working in the hi-backup mode have been employ...This paper is concerned with the development of electronic controller for turbine POwer units. In order to increase the reliability of the POwer unit, three control loops working in the hi-backup mode have been employed. This control strategy is able to satisfy the demands of the application of the power unit to the aviation fields.展开更多
辅助动力单元(auxiliary power unit,APU)的系统构型和控制策略对串联混合动力汽车的燃油经济性有很大的影响.利用Matlab/Simulink建立了带有PWM整流器和不可控整流器的两种APU系统模型,并分别将ON/OFF控制策略和负载跟随控制策略应用...辅助动力单元(auxiliary power unit,APU)的系统构型和控制策略对串联混合动力汽车的燃油经济性有很大的影响.利用Matlab/Simulink建立了带有PWM整流器和不可控整流器的两种APU系统模型,并分别将ON/OFF控制策略和负载跟随控制策略应用在两种APU系统中,利用能量流图分析了系统主要部件的效率.仿真结果表明,相比带有不可控整流器构型的APU及负载跟随控制方法,采用PWM整流器构型的APU及ON/OFF的控制方法具有较好的燃油经济性.展开更多
该文在介绍辅助动力单元APU（auxiliary power unit）系统构成的基础上，着重解决了APU系统中柴油机的转速控制方法。由于发电机的影响，APU系统中对柴油机的转速调节比普通的柴油机调速更加复杂。该文针对电控柴油机的运行状况，用dSP...该文在介绍辅助动力单元APU（auxiliary power unit）系统构成的基础上，着重解决了APU系统中柴油机的转速控制方法。由于发电机的影响，APU系统中对柴油机的转速调节比普通的柴油机调速更加复杂。该文针对电控柴油机的运行状况，用dSPACE控制器输出模拟量代替电子油门的方法对电控泵喷嘴的柴油机实现了电子调速，同时分析了PI控制的各项参数对APU的转速控制的影响。展开更多
基金AVL LIST GM BH(A-8020 Graz,Hans-List-Platz 1)for its funding
文摘A diesel engine of conventional trucks has a low efficiency under the idling condition,leading to a high cost for heating or cooling in the cab during night. The solution to this problem will have great significance on energy conservation and emission reduction. A new auxiliary power unit of solid oxide fuel cell( SOFCAPU) with high efficiency solves this problem perfectly. Heat pump air conditioner is considered as a promising device for the application of SOFC-APU with a high cooling and heating efficiency. To make a quantitative analysis for the application of SOFC-APU,a model is built in Matlab / Simulink. The diesel engine model and SOFC-APU model are fitted based on some experimental data of SOFC-APU and diesel engine during the idling operation. An analysis of the application of SOFC-APU on different trucks in Northeast China is comprehensively made,including efficiency and emission.
文摘This paper is concerned with the development of electronic controller for turbine POwer units. In order to increase the reliability of the POwer unit, three control loops working in the hi-backup mode have been employed. This control strategy is able to satisfy the demands of the application of the power unit to the aviation fields.
基金Supported by National Natural Science Foundation(NNSF)of China(51105220)funded by the MOST(Ministry of Science and Technology)of China(20103010017),funded by the MOST(Ministry of Science and Technology)of China(20111861171)funded by the Tsinghua University Initiative Scientific Research Program(2010THZ08116)
文摘辅助动力单元(auxiliary power unit,APU)的系统构型和控制策略对串联混合动力汽车的燃油经济性有很大的影响.利用Matlab/Simulink建立了带有PWM整流器和不可控整流器的两种APU系统模型,并分别将ON/OFF控制策略和负载跟随控制策略应用在两种APU系统中,利用能量流图分析了系统主要部件的效率.仿真结果表明,相比带有不可控整流器构型的APU及负载跟随控制方法,采用PWM整流器构型的APU及ON/OFF的控制方法具有较好的燃油经济性.
文摘该文在介绍辅助动力单元APU（auxiliary power unit）系统构成的基础上，着重解决了APU系统中柴油机的转速控制方法。由于发电机的影响，APU系统中对柴油机的转速调节比普通的柴油机调速更加复杂。该文针对电控柴油机的运行状况，用dSPACE控制器输出模拟量代替电子油门的方法对电控泵喷嘴的柴油机实现了电子调速，同时分析了PI控制的各项参数对APU的转速控制的影响。
