基于循环工况的电动汽车双电机驱动系统协同优化设计  

Co⁃optimization design of electric vehicle dual⁃motor drive system based on driving cycle

作　　者：苏照芮 布家宝 杜锦华[1,2] SU Zhaorui;BU Jiabao;DU Jinhua(School of Electrical Engineering,Xi’an Jiaotong University,Xi’an 710049,China;Shaanxi Key Laboratory of Smart Grid,Xi’an 710049,China)

机构地区：[1]西安交通大学电气工程学院,陕西西安710049 [2]陕西省智能电网重点实验室,陕西西安710049

出　　处：《电工电能新技术》2024年第6期1-10,共10页Advanced Technology of Electrical Engineering and Energy

基　　金：国家自然科学基金项目(51877172)。

摘　　要：双电机优化设计需要考虑双电机系统的耦合运行,在传统优化方法中多采用估计效率Map的方法得到双电机系统最优的转矩分配系数。然而在高效电机优化设计中无法忽视估计法带来的误差。此外不同工况下电机的控制策略也不同。为了提高双电机驱动系统全工况运行效率,本文基于两种循环工况,系统地提出了一种电动汽车双电机协同优化设计方法。首先通过参数匹配获得了初代电机参数,接着提出了基于半解析模型的电机效率Map计算方法。基于此方法研究了不同工况下双电机系统的最优转矩分配和控制策略。然后基于粒子群算法,考虑电机不同工况下的控制策略对双电机本体参数进行了全工况优化。最后搭建了半实物实验平台,仿真和实验结果表明,所提优化方法能够提高双电机驱动系统的运行效率。The coupling operation of dual⁃motor system needs to be considered in the optimal design of dual⁃motor.In the traditional optimization methods,the method of estimating efficiency Map is often used to obtain the optimal torque distribution coefficient of the dual⁃motor system.However,the error caused by the estimation method cannot be ignored in the optimal design of high⁃efficiency motor.In addition,the control strategies of the motor are also different under different working conditions.In order to improve the operating efficiency of dual⁃motor drive system under all operating conditions,based on two kinds of driving cycles,a collaborative optimization design method of dual⁃motor for electric vehicle is systematically proposed in this paper.Firstly,the parameters of the primary motor are obtained by parameter matching,and then the Map calculation method of motor efficiency based on semi⁃analyt⁃ical model is proposed.Based on this method,the optimal torque distribution and control strategy of dual⁃motor system under different working conditions are studied.Then based on the particle swarm optimization algorithm,considering the control strategy of the motor under different operating conditions,the parameters of the dual motor are optimized under all working conditions.Finally,a hardware⁃in⁃the⁃loop experimental platform is built.Simula⁃tion and experimental results show that the proposed optimization method can improve the operation efficiency of the dual⁃motor drive system.

关 键 词：电动汽车 双电机驱动 循环工况 耦合设计 协同优化 

分 类 号：TM351[电气工程—电机]