Affiliations: [a] Ningbo Institute of Technology, Zhejiang University,
Ningbo, China | [b] School of Electrical and Electronic Engineering,
Nanyang Technological University, Singapore
Correspondence:
[*]
Corresponding author: Dr. Chi Zhang, PhD, School of Information
Science and Engineering, Ningbo Institute of Technology, Zhejiang University,
Ningbo City, 315100, China. Tel.: +86 574 88130028; Fax: +86 574 88229505;
E-mail: zhangchi@pmail.ntu.edu.sg
Abstract: A permanent magnet synchronous motor and an induction motor both
having dual air-gap, axial flux configurations have been designed. Both of
these two type motors have twin stators and double-side single rotor that is
sandwiched between these two stators. On the double surfaces of both disk-type
rotors, the permanent magnets are mounted and copper rotor-bars are filled in
the slots respectively. The mathematical models of these two type motors have
been derived, and the performances of the motors are compared mathematically.
Three-dimensional finite element method (FEM) is implemented to analyze the
characteristics of these motors and make comparison between them. The analysis
results support the feasibility of the motor structures and prove that the PM
motor has higher torque density and efficiency when the same dimension is
assigned to both motors.
Keywords: Axial flux motor, axial flux PM motor, axial flux induction motor, 3D FEM analysis
