驱动电机热效应对混合动力汽车性能影响的研究
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摘要
根据传热学的基本理论,对混合动力汽车驱动永磁同步电机进行了热力学研究。引入了温度调制系数的概念,分析了温升对电机基本性能的影响。在ADVISOR整车仿真平台中搭建了永磁同步电机的热力学模型,修正了电机的效率模块和转矩模块。结合HWFET和北京整车循环行驶工况,对某并联混合动力汽车使用修正温度模型和ADVISOR原电机模型进行仿真对比,结果表明:考虑热效应影响的电机模型更能反映出电机实际工作状况,提高了混合动力汽车整车模型的仿真精度。
According to the base theory of heat transfer,a thermodynamic for the permanent synchronous motor of hybrid electric vehicle was studied.The conception of temperature modulation factor was introduced;the temperature rise impacting the fundamental characteristics for motor was analyzed.Then the thermodynamic model of permanent magnetism synchronous machine was build in the vehicle simulation analyze platform in ADVISOR,the motor efficiency module and torque module were modified.Take HWFET and Beijing drive cycle for example,a parallel hybrid electric vehicle with the modified motor model and the motor model in the ADVISOR which was not modified were simulated and compared each other.The result proved that the actual performances of motor can be reflected further by the motor model which considering the thermal effects,So the simulation precision of model for hybrid electric vehicle can be improved.
引文
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