Characterization of Axial Flux Permanent Magnet Generator Under Various Geometric Parameters for Improved Performance of The Machine

Abstract

An improved design of an axial flux permanent magnet machine is obtained using finite element method and sensitivity analyses. A 9-phase axial flux permanent magnet machine with one-rotor-two-stators configuration equipped with concentrated winding is investigated and condition for minimum cogging torque and voltage harmonics is deduced. Owing to three dimensional structure of axial flux permanent magnet machines, 3-D finite element model is used to model and analysis of the generator performance characteristics. Sensitivity of the machine is evaluated respect to variation of its geometric parameters