考虑电机控制策略影响的电动车动力总成振动分析  

Vibration analysis of electric vehicle powertrains considering motor control strategy

作　　者：于蓬[1,2] 章桐[1,2,3] 余瑶[1,2] 郭荣[1,2] 

机构地区：[1]同济大学新能源汽车工程中心,上海201804 [2]同济大学汽车学院,上海201804 [3]同济大学中德学院,上海201804

出　　处：《振动与冲击》2016年第19期50-57,共8页Journal of Vibration and Shock

基　　金：国家863计划项目(2011AA11A265);国家自然科学基金(51205290);中央高校基本科研业务费专项资金项目(1700219118)

摘　　要：针对电动车动力总成存在的结构振动问题,提出机-电-磁-控一体的仿真方法,并在此基础上进行控制策略优化。首先,搭建综合考虑电机控制策略、电机电磁作用及详细机械结构的动力总成模型,体现所研究对象机电一体化的特点;然后进行电机电流、电磁力及总成振动响应的仿真与试验,验证所提多物理场仿真方法的正确性;最后从控制策略优化角度,而非机械结构改变角度,对系统进行了优化。结果表明,基于预测模型控制的直接转矩控制策略,与原有的基于最大转矩电流比的控制策略相比,更有利于降低电动车动力总成表面的振动响应。研究结果可为电动车动力传动系统的匹配、集成以及整体性能的提升提供参考。Aiming at structural vibration problems of EV powertrains, a simulation method with mechanical- electrical-magnetic-control integration was proposed, and the optimization of control strategy was conducted. Firstly, a powertrain model considering motor control strategy, motor electromagnetic action and detailed mechanical structure was established reflecting the characteristics of electromechanical integration. Then simulations and tests for motor current, electromagnetic forces and vibration response of a powertrain were conducted the correctness of the multi-physical field simulation method was verified. Lastly, the system was optimized through control strategy improvement instead of mechanical structure modification. Results showed that compared with the maximum torque per ampere control strategy, the direct torgue control strategy based on predictive model control is more suitable to reduce the surface vibration responses of EV powertrain. The study results provided a reference for the integration of EV powrtrain system and the improvement of its overall performance.

关 键 词：电动车 动力总成 振动分析 最大转矩电流比控制 预测控制 

分 类 号：U469.72[机械工程—车辆工程]