Formula Expression of Airgap Leakage flux Coefficient of Axial-Flux Permanent Magnet Motor
Abstract: Airgap leakage flux
coefficient is one of the main parameters which must be given ahead of time when
performing initial designs or getting performance results by magnetic circuit
analysis for any kinds of electrical machines. Three -dimensional finite
element method (3D-FEM) is the most reliable one to obtain the accurate leakage
flux coefficient for axial-flux permanent magnet (AFPM) motor which definitely
takes a much long time and is not advantageous to the motor’s initial and
optimal design. By constituting the accurate lumped-parameter magnetic circuit
(LPMC) model and computing the resultant magnetic reluctances, the analytical
formula of the leakage flux coefficient of AFPM is given which is verified by
3D-FEM and the prototyped AFPM experiment.
Key Words: Axial-flux permanent magnet motor (AFPM), leakage flux
coefficient, lumped-parameter magnetic circuit (LPMC), 3D-FEM
Author: Xiao Gong, Yanliang
Xu, Feng Xin
Journal Code: jptkomputergg130044