【摘要】 旨在深入探讨电机控制策略对电动车动力总成电磁振动的影响。给出两类常用电机控制方法,即最大转矩电流比控制方法和直接转矩控制方法,搭建其电机控制模型;建立电机定转子二维电磁分析模型,对两类控制策略下的气隙磁密和电磁力进行仿真分析;并利用电动车动力总成机械结构模型,进一步分析动力总成关键点在两类控制方法下的振动响应。结果表明,所提供的综合考虑电机控制策略、电机本体电磁模型以及动力总成机械模型的联合仿真方法,可以有效预测电机控制策略对振动性能的影响,为从优化控制策略的角度,改善电动车的振动舒适性奠定理论基础。更多还原

【Abstract】 Aiming at further exploring the effect of motor control strategy on the electromagnetic vibration of electric vehicle power trains,two types of conventional motor control methods,the maximum torque per ampere control method and the direct torque control method,were proposed,and their motor control models were built. A two-dimensional electromagnetic analysis model of the motor was established,and the air gap flux density and electromagnetic force under the two types of control strategies were simulated. Finally,further analysis on the power train vibration responses at the key points was conducted using the electric vehicle power train mechanical structure model with the two control methods.The results show that the provided co-simulation method,integratedly considering the motor control strategies,motor body electromagnetic model and power train mechanical model can effectively predict the impact of motor control strategy on the vibration performance. The study provides a theoretical basis for improving the electric vehicle vibration comfort from the perspective of control strategy optimization.更多还原