In this paper,key dimensions of a co-axial dual-mechanical-port flux-switching permanent magnet(CADMP-FSPM)machine for fuel-based extended range electric vehicles(ER-EVs),including split ratio,stator/rotor pole arcs,r...In this paper,key dimensions of a co-axial dual-mechanical-port flux-switching permanent magnet(CADMP-FSPM)machine for fuel-based extended range electric vehicles(ER-EVs),including split ratio,stator/rotor pole arcs,rotor yoke thickness,etc.,are analyzed and optimized.Firstly,the topologies and operation principles of an exampled 3-phase CADMP-FSPM are introduced briefly,in which an inner-rotor FSPM machine with 12-stator-slots/10-rotor-poles for high-speed generation and an outer-rotor FSPM machine with 12-stator-slots/22-rotor-poles for low-speed motoring are assembled co-axially.Then,the relationship between the key dimensions and electromagnetic performance,particularly for electromagnetic torque(power),of the CADMP-FSPM machine is studied by 2D-finite element analysis(FEA).Further,the reasonable matches of split ratio,rotor/stator pole arcs and rotor yoke are determined and the original CADMP-FSPM machine is optimized correspondingly.Finally,the static characteristics,including no-load PM flux-linkage,electro-motive-force(EMF),winding inductances,cogging torques and electromagnetic torques,of the original and optimized machines are compared by 2D-FEA.The results verify that the optimized CADMP-FSPM machine can exhibit improved torque characteristics than the original one,i.e.,the torque ripples of the inner and outer machines can be reduced by 22.7%and 4.7%,respectively,and the average torque of the inner and outer machines can be increased by 0.43Nm and 2Nm,respectively.展开更多
增程式电动汽车是以纯电能驱动的车辆,通过动力蓄电池和一个小型的增程器(Auxiliary Power Unit)为车辆提供电能,在增加了车辆续航里程的同时,工况适应性也随之提高,被评为目前具有较高研发前景的新能源汽车[1]。本文以城市SUV车型的增...增程式电动汽车是以纯电能驱动的车辆,通过动力蓄电池和一个小型的增程器(Auxiliary Power Unit)为车辆提供电能,在增加了车辆续航里程的同时,工况适应性也随之提高,被评为目前具有较高研发前景的新能源汽车[1]。本文以城市SUV车型的增程式电动汽车为需求目标进行研究。根据整车参数及制定的控制策略,基于AVL Cruise软件为平台建立性能仿真模型;建立Simulink控制策略模型;分别在短途行驶模式和长途行驶模式下选定符合相应模式的行驶工况进行联合仿真分析。结果表明,整车动力性及续航里程均能达到初始的设计目标,为增程式电动汽车的技术拓展和多样的控制策略提供可行性方案。展开更多
为了进一步降低增程式电动汽车(extended range electric vehicle,EREV)在自适应巡航过程中的驱动成本,针对增程模式下自适应巡航控制(adaptive cruise control,ACC)系统在不同巡航工况下需求功率不同的特点,提出了一种考虑油耗和电池...为了进一步降低增程式电动汽车(extended range electric vehicle,EREV)在自适应巡航过程中的驱动成本,针对增程模式下自适应巡航控制(adaptive cruise control,ACC)系统在不同巡航工况下需求功率不同的特点,提出了一种考虑油耗和电池寿命的EREV双模式切换ACC策略。针对ACC系统设计了模式切换逻辑,制定了基于PID和模型预测控制(model predictive control,MPC)算法的上层控制策略;针对增程模式制定了基于最优工作点和最低燃油消耗曲线的增程器单点恒温控制和功率跟随控制策略;基于MATLAB/Simulink搭建了控制策略模型,通过ACC系统定速或跟车模式下单点恒温控制和功率跟随控制的仿真分析,结合油耗和充电功率制定了增程器双模式切换控制策略;最后,在考虑油耗和电池寿命的情况下,进行了3种增程器控制策略的驱动成本对比。结果表明,双模式切换控制相比单模式控制最高可实现驱动成本15.63%的降低。展开更多
基金This work was supported by The National Basic Research Program(973 Program)(2013CB035603).
文摘In this paper,key dimensions of a co-axial dual-mechanical-port flux-switching permanent magnet(CADMP-FSPM)machine for fuel-based extended range electric vehicles(ER-EVs),including split ratio,stator/rotor pole arcs,rotor yoke thickness,etc.,are analyzed and optimized.Firstly,the topologies and operation principles of an exampled 3-phase CADMP-FSPM are introduced briefly,in which an inner-rotor FSPM machine with 12-stator-slots/10-rotor-poles for high-speed generation and an outer-rotor FSPM machine with 12-stator-slots/22-rotor-poles for low-speed motoring are assembled co-axially.Then,the relationship between the key dimensions and electromagnetic performance,particularly for electromagnetic torque(power),of the CADMP-FSPM machine is studied by 2D-finite element analysis(FEA).Further,the reasonable matches of split ratio,rotor/stator pole arcs and rotor yoke are determined and the original CADMP-FSPM machine is optimized correspondingly.Finally,the static characteristics,including no-load PM flux-linkage,electro-motive-force(EMF),winding inductances,cogging torques and electromagnetic torques,of the original and optimized machines are compared by 2D-FEA.The results verify that the optimized CADMP-FSPM machine can exhibit improved torque characteristics than the original one,i.e.,the torque ripples of the inner and outer machines can be reduced by 22.7%and 4.7%,respectively,and the average torque of the inner and outer machines can be increased by 0.43Nm and 2Nm,respectively.
文摘增程式电动汽车是以纯电能驱动的车辆,通过动力蓄电池和一个小型的增程器(Auxiliary Power Unit)为车辆提供电能,在增加了车辆续航里程的同时,工况适应性也随之提高,被评为目前具有较高研发前景的新能源汽车[1]。本文以城市SUV车型的增程式电动汽车为需求目标进行研究。根据整车参数及制定的控制策略,基于AVL Cruise软件为平台建立性能仿真模型;建立Simulink控制策略模型;分别在短途行驶模式和长途行驶模式下选定符合相应模式的行驶工况进行联合仿真分析。结果表明,整车动力性及续航里程均能达到初始的设计目标,为增程式电动汽车的技术拓展和多样的控制策略提供可行性方案。
文摘为了进一步降低增程式电动汽车(extended range electric vehicle,EREV)在自适应巡航过程中的驱动成本,针对增程模式下自适应巡航控制(adaptive cruise control,ACC)系统在不同巡航工况下需求功率不同的特点,提出了一种考虑油耗和电池寿命的EREV双模式切换ACC策略。针对ACC系统设计了模式切换逻辑,制定了基于PID和模型预测控制(model predictive control,MPC)算法的上层控制策略;针对增程模式制定了基于最优工作点和最低燃油消耗曲线的增程器单点恒温控制和功率跟随控制策略;基于MATLAB/Simulink搭建了控制策略模型,通过ACC系统定速或跟车模式下单点恒温控制和功率跟随控制的仿真分析,结合油耗和充电功率制定了增程器双模式切换控制策略;最后,在考虑油耗和电池寿命的情况下,进行了3种增程器控制策略的驱动成本对比。结果表明,双模式切换控制相比单模式控制最高可实现驱动成本15.63%的降低。
