Comparative Study and Design Optimization of a Dual-Mechanical-Port Electric Machine for Hybrid Electric Vehicle Applications
Journal article, 2022

A new dual-mechanical-port (DMP) electric machine for hybrid electric vehicle applications, particularly in the power-split continuously variable transmission systems, is proposed in this paper. In order to comprehensively and quantitatively evaluate the pros and cons of the proposed machine, a comparative study of four DMP electric machines with different topologies is conducted. These four investigated DMP electric machines include a conventional DMP machine, a DMP machine with spoke-type permanent magnets, a DMP machine with reluctance rotor, and a DMP machine with open slots which is the proposed machine in this paper. Even though these four machines have similar topologies, they have different operating principles, which are demonstrated in detail. The comparison results indicate that the DMP machine with open slots outperforms the others in terms of torque/power density, efficiency, magnet utilization, etc. Accordingly, the DMP machine with open slots is selected for further investigation and optimization. A large-scale multi-objective optimization is carried out for this machine, where the differential evolution algorithm serves as a global search engine to target optimal performance. Finally, an optimal design is prototyped, and the experimental results are performed to verify the effectiveness of the analysis and simulation results in this paper.

Magnetic flux

Stator windings

Windings

continuously variable transmission

dual-mechanical-port electric machines

design optimization

hybrid electric vehicles

Hybrid electric vehicles

Electric machines

Comparative study

Rotors

Torque

Author

Hao Chen

Chalmers, Electrical Engineering, Electric Power Engineering

Ayman El-Refaie

Marquette University

Yuefei Zuo

Nanyang Technological University

Shun Cai

Nanyang Technological University

Libing Cao

Nanyang Technological University

Christopher H.T. Lee

School of Electrical and Electronic Engineering

IEEE Transactions on Vehicular Technology

0018-9545 (ISSN) 1939-9359 (eISSN)

Vol. 71 8 8341-8353

Subject Categories

Aerospace Engineering

Energy Engineering

Other Electrical Engineering, Electronic Engineering, Information Engineering

DOI

10.1109/TVT.2022.3175476

More information

Latest update

3/7/2024 9