Three-Dimensional Field Reconstruction Method for Modeling Axial Flux Permanent Magnet Machines

Abstract

The field reconstruction method (FRM) is a recent technique for modeling electrical machines. This method offers the same accuracy as the finite element analysis at a lower computational cost by using a few prestored results, which are known as the basis functions. This paper describes an enhanced threedimensional (3-D) FRM for modeling an axial flux permanent magnet machine. This machine has a special structure, which warrants the use of 3-D modeling for completely describing its behavior. The proposed method can be an efficient solution for the 3-D modeling of electrical machinery, especially from the viewpoint of timevarying and iterative optimization problems. Experimental and simulation results are provided to validate the proposed method's precision.Index Terms-Axial flux permanent magnet (AFPM) machine, field reconstruction method (FRM), Maxwell stress tensor (MST), 3-D modeling.

Analytical modeling of axial flux PM machines with eccentricities

“…(15) is very difficult for geometries with more than three vertices [23], therefore, the SC Toolbox provides a numerical solution by a library of command-line functions which could be seen in [19]. In this paper, the rectangle domain (T-plane) is created by calling f = correctmap (p,alpha), as shown in Fig.…”

“…The quasi-3D method, which is widely adopted by AFPMM designers, still has large computation time for eccentricities [18]. Another alternative method is the field reconstruction (FR) method [19], which is a mixed analytical-FE method and partly depends on the FE model. Although it is much faster than 3D-FE model, it still costs much time on modeling the different geometries.…”

A Fast Analytic Model of Axial Flux Permanent Magnet Machines with Static/Dynamic Axis Eccentricity

“…An alternative method is the field reconstruction (FR) method [9], which is a mix between analytical and FE methods and partly depends on the FE model. Although it is much faster than 3D FE modeling, it still requires much time to model the different geometries.…”

Three-dimensional finite-element-model investigation of axial-flux PM BLDC machines with similar pole and slot combination for electric vehicles

“…Nowadays, special attention has been paid to the field of power electronics and electric machines [1][2][3][4][5][6][7][8][9][10] as the concept of hybrid/electric vehicles, direct-driven wind turbines, and more electric aircraft/ships are extending.…”

“…Axial-flux PM machine has a high torque density compared with radial-flux PM machine and is an attractive choice especially when an electrical machine has to be directly mounted in to a mechanical machine [2]. Good heat removal configuration along with similar aspect ratio makes AFPM machine particularly suitable for in-wheel direct drive electric vehicles [11].…”