Rapid Design of a Coreless Axial Flux Motor Based on the Magnetic Charge Method

Guoqing Zhu, Zhihui Jin and Jian Luo ()
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Guoqing Zhu: School of Mechatronic Engineering and Automation, Shanghai University, Shanghai 200444, China
Zhihui Jin: School of Mechatronic Engineering and Automation, Shanghai University, Shanghai 200444, China
Jian Luo: School of Mechatronic Engineering and Automation, Shanghai University, Shanghai 200444, China

Energies, 2025, vol. 18, issue 13, 1-25

Abstract: Axial flux motors have attracted significant attention in recent years due to their advantages such as shorter axial length and high torque density. However, the optimization of axial flux motors is an extremely time-consuming process. To reduce the computational time required for motor optimization, this study employed a magnetic charge model to establish a coreless axial flux motor model and analyzed the advantages of this approach. This method is applicable to coreless axial flux motor optimizations with surface-mounted rotors and concentrated windings. Parameter optimization was subsequently performed based on the theoretical model. In terms of seeking optimal solutions, the torque obtained through the magnetic charge method (MCM) reached 99.67% of the finite element method (FEM) results. Finally, a prototype was fabricated, and a test platform was constructed based on the optimization results. The experimental torque showed a 4% deviation from simulations, validating the accuracy of the optimization.

Keywords: coreless axial flux motor; multi-parameter optimization; magnetic charge (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2025
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