Research on Dynamic Characteristics of Electric Drive System Under Regenerative Braking Condition

被引：0

作者：

Liu K. ^{[1
]}

Du C. ^{[2
]}

Wu W. ^{[1
]}

Lu G. ^{[2
]}

Yuan S. ^{[1
]}

机构：

[1] School of Mechanical Engineering, Beijing Institute of Technology, Beijing

[2] Chongqing Changan Automobile Co., Ltd., Chongqing

来源：

Qiche Gongcheng/Automotive Engineering | 2021年 / 43卷 / 08期

关键词：

Electric vehicle; Nonlinear dynamics; Regenerative braking; Tire torsion characteristics;

D O I：

10.19562/j.chinasae.qcgc.2021.08.001

中图分类号：

学科分类号：

摘要：

In order to study the dynamic characteristics of electric vehicle drive system in the regenerative braking process, the tire torsion characteristics are further coupled on the basis of considering static transmission error, backlash and time-varying meshing stiffness and the electromechanical coupling model of permanent magnet synchronous motor-two stage transmission mechanism-tire is established and verified by experiments. The influence of tire torsional characteristics and regenerative braking torque on the dynamics of the electric drive system is analyzed. The results show that the tire torsional characteristics introduce a new mode into the electric drive system, which changes the first-order mode of the system. Gear continuous impact events of the transmission mechanism occur when the regenerative braking torque is small, and with the increase of regenerative braking torque, the impact events gradually disappear, but the dynamic load of the transmission mechanism increases when the electromagnetic torque is reversed. The research provides theoretical support for dynamic load study and life prediction of the electric drive system. © 2021, Society of Automotive Engineers of China. All right reserved.

引用

页码：1121 / 1127

页数：6

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