Development of novel dual-rotor stator-permanent-magnet motor drives for electric vehicles with electronic differential

Professor Chau, Kwok Tong   (Principal Investigator (PI))

Dr Lee Christopher Ho-tin   (Co-Investigator)

42

2018-12-01

2022-05-31

700000

Development of novel dual-rotor stator-permanent-magnet motor drives for electric vehicles with electronic differential

Electric drives, Electric machines, Electric motors, Electric vehicles, Permanent-magnet motors

Power SystemOthers - Electrical and Electronic Engineering

Engineering (E)

17205518

General Research Fund (GRF)

2018

Completed

1) Develop novel dual-rotor stator-permanent-magnet motor topologies for electric vehicles (EVs), which can offer higher reliability and safety than the state-of-the-art electronic differential using the two-motor arrangement; 2) Formulate the design equations and analytical models of the proposed motors, hence identifying the key design parameters and performance indices; 3) Analyze the electromagnetic, thermal and structural performances of the proposed motors, hence assessing the torque ripple during cornering, the thermal instability of permanent magnets, and the mechanical integrity of the axial-field structure; 4) Develop the power converter topologies for the proposed motors, which can conduct power regulation for dual-rotor propulsion and steering; 5) Devise the control strategies for the proposed motor drives, which can achieve the desired propulsive torque with minimum torque ripple, especially during cornering; 6) Evaluate the performance indices of the proposed motor drives in terms of the reliability and safety under various failure modes as well as the efficiency, torque density, manufacturing complexity and cost as compared with the state-of-the-art electronic differential for EVs.