• CN: 11-2187/TH
  • ISSN: 0577-6686

Journal of Mechanical Engineering ›› 2026, Vol. 62 ›› Issue (7): 363-374.doi: 10.3901/JME.260383

Previous Articles    

Collaborative Optimization of Mechanical-electrical-control Parameters of Electric Drive System Considering Comprehensive Loss and Dynamic Performance under Driving Cycle

XING Qingkun1,2, WU Ming1, LIU Changzhao1, LI Zhengqi1,3, QIN Datong1   

  1. 1. State Key Laboratory of Mechanical Transmission for Advanced Equipment, Chongqing University, Chongqing 400044;
    2. China North Vehicle Research Institute, Beijing 100072;
    3. Guangdong Weiling Motor Manufacturing Co., Ltd., Foshan 528311
  • Received:2025-04-10 Revised:2025-11-25 Published:2026-05-25

Abstract: Considering the complex coupling relationship between mechanical, electrical, and control parameters of electric drive system, and aiming at its variable operating conditions and multi-directional performance requirements, a collaborative optimization design method of "machine-electric-control" parameters of electric drive system is proposed. Firstly, based on the reduction model of permanent magnet synchronous motor, the motor power loss calculation model is also established, and the power loss calculation model of the total electric drive system is constructed combined the power loss model of motor and gear transmission. Moreover, considering the actual driving conditions of vehicles, the comprehensive loss evaluation method of electric drive system under driving cycle is established. Then, the dynamic model of the electric drive system is established by the lumped parameter method to obtain the dynamic response of the electric drive system, and the radial force on the stator teeth of the motor is considered comprehensively to realize the comprehensive evaluation of the dynamic performance of the electric drive system. Finally, taking the total mass of the electric drive system, total energy loss under cyclic driving conditions, torque fluctuation and radial electromagnetic force fluctuation as comprehensive optimization objectives, the dynamic synchronous optimization of mechanical-electrical-control parameters is realized. The optimization method proposed in this paper, in which, the internal nested optimization is included, realizes the cooperative optimization of mechanical, electrical and control parameters, provides the design theory and method for high performance electric drive system.

Key words: electric drive system, mechanical-electrical-control collaborative optimization, comprehensive loss under driving conditions, dynamic performance

CLC Number: