Design of a 300W axial flux motor for an electric bike

The motor of the electric bike is crucial to the overall performance of the bike. A lightweight but powerful and reliable motor is required for electric vehicles. A Brushless permanent magnet motor is selected to meet those requirements. Axial-flux machine topology and Halbach-array are utilized in...

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Bibliographic Details
Published in2021 24th International Conference on Electrical Machines and Systems (ICEMS) pp. 23 - 28
Main Authors Tung, Nguyen Khanh, Lee, Ji-Young, Lee, Ji-Heon, Chun, Yon-Do
Format Conference Proceeding
LanguageEnglish
Published KIEE & EMECS 31.10.2021
Subjects
axial flux machine
Bicycles
brushless motor
Brushless motors
electric vehicles
halbach-array
hall sensor
Permanent magnet motors
Rotors
Sensor systems
Stator cores
Topology
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Summary:The motor of the electric bike is crucial to the overall performance of the bike. A lightweight but powerful and reliable motor is required for electric vehicles. A Brushless permanent magnet motor is selected to meet those requirements. Axial-flux machine topology and Halbach-array are utilized in the motor design to further increase the power density. The tooth-tips in the stator core are removed to simplify the manufacturing process and reduce core weight. The rotor position is detected by the utilization of Hall sensors. Electromagnetic and thermal analyses are performed with three-dimensional finite element analysis to shows the advantage of such topology in an electric bike. A prototype is manufactured and tested at rated conditions to validate analysis results.
ISSN:2642-5513
DOI:10.23919/ICEMS52562.2021.9634330