Design of Axial Flux Double PCB Stator Permanent Magnet Motor

doi:10.3901/JME.2025.19.249

Abstract

Abstract: In view of the design goals of lightweight, compact and high torque density of new motors, the printed circuit board (PCB) technology was introduced into the stator winding manufacturing process, and an axial flux double PCB stator motor is designed. Taking a single effective conductor bar as the research object, an analytical model of the motor's induced electromotive force, electromagnetic torque and output power was established. A finite element simulation model of the PCB motor was constructed, and key parameter optimization research was carried out. The electromagnetic field and temperature field simulation analysis of the series and parallel double PCB stator motors were carried out. Based on the constructed test platform, the output performance and temperature rise characteristics of the PCB motor under different configurations were studied. Under the rated operating conditions of 1 500 r/min and 3 A, the output torque of the series-connected double PCB stator motor is 130 mN·m, the torque density can reach 2 000 N·m/m³, and the measured maximum temperature is 180.6 ℃; the output torque of the parallel-connected double PCB stator motor is 103 mN·m, the torque density can reach 1 584.62 N·m/m³, and the maximum measured temperature is 110.5 ℃. Compared with the series configuration under the same working conditions, the temperature rise is smaller, which can effectively improve the PCB motor heating problem.

Key words: printed windings, axial flux, double stator motor, electromagnetic field simulation, temperature field analysis

CLC Number:

TM351

LI Zhen, HUANG Haocheng, LI Siyu, REN Huimin, HE Zhizhu, SHENG Lei. Design of Axial Flux Double PCB Stator Permanent Magnet Motor[J]. Journal of Mechanical Engineering, 2025, 61(19): 249-262.

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