414 Wang et al. / Front Inform Technol Electron Eng 2019 20(3):414-424 Frontiers of Information Technology & Electronic Engineering www.jzus.zju.edu.cn; engineering.cae.cn; www.springerlink.com ISSN 2095-9184 (print); ISSN 2095-9230 (online) E-mail:
[email protected] Design of a PCB stator coreless axial flux permanent magnet * synchronous motor based on a novel topology Halbach array Xiao-yuan WANG, Xiang LI†‡, Chun-peng LI, Si-jia XU, Le-tao LING College of Electrical Engineering and Automation, Tianjin University, Tianjin 300072, China †E-mail:
[email protected] Received June 2, 2017; Revision accepted Sept. 13, 2017; Crosschecked Mar. 14, 2019 Abstract: A novel topology Halbach permanent magnet array is proposed and applied to the design of a printed circuit board (PCB) axial flux permanent magnet (AFPM) motor. Compared with the traditional coreless AFPM motor, this novel topology for a Halbach permanent magnet array PCB stator AFPM motor has larger air-gap magnetic flux density and air-gap flux per pole. The magnetic flux leakage is effectively reduced, and the air-gap magnetic density is close to the sine wave. Results of the finite element analysis and prototype experiments verify the feasibility and effectiveness of the novel Halbach permanent magnet array PCB stator motor. A reference basis and practical value for the design of the PCB AFPM motor are provided. Key words: Axial flux permanent magnet synchronous motor; Printed circuit board; Halbach permanent magnet array; Finite element method https://doi.org/10.1631/FITEE.1700345 CLC number: TM351 1 Introduction 2011); thus, the motor servo is good and conducive for batch production (Wu, 2012).