Incremental Learning Strategy-Assisted Multi-Objective Optimization for an Oil–Water Mixed Cooling Motor

Author:

Li Wei1,Li Yongsheng2,Li Congbo3,Wang Ningbo3,Fu Jiadong4

Affiliation:

1. Hefei University of Technology School of Mechanical Engineering, , Hefei 230009 , China

2. Huazhong University of Science and Technology School of Civil and Hydraulic Engineering, , Wuhan 430074 , China

3. Chongqing University College of Mechanical and Vehicle Engineering, , Chongqing 400044 , China

4. Chongqing Jinkang E-powertrain Co., Ltd. , Chongqing 401335 , China

Abstract

Abstract As the core component of electric vehicles (EVs), the performance of motors affects the use of EVs. Motors are sensitive to temperature, and overheated operating temperature may cause the deterioration of the magnetic properties and the reduction of efficiency. To effectively improve the heat dissipation of the motor, this work presents an incremental learning strategy-assisted multi-objective optimization method for an oil–water mixed cooling induction motor (IM). The key parameters of the motor are modeled parametrically, and the design of the experiment is carried out by the Latin hypercube method. The incremental learning strategy is used to improve the low accuracy of the surrogate model. Four multi-objective optimization algorithms are used to drive the optimization process, and the optimal cooling system parameters are obtained. The reliability of the proposed method is verified by motor bench experiments. The optimization results suggest that the maximum temperature of the motor is reduced by 5 K after optimization, and the heat dissipation of the motor is improved effectively, which provides a theoretical basis for further promotion and improvement of the induction motor.

Funder

National Natural Science Foundation of China

Publisher

ASME International

Subject

Fluid Flow and Transfer Processes,General Engineering,Condensed Matter Physics,General Materials Science

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