Skip to main content
Log in

Three dimensional finite element vector potential formulation of magnetostatic field with non-uniform permanent magnet source distribution

Dreidimensionale Formulierung des magnetostatischen Feldes mit Hilfe des Vektorpotentials bei ungleichförmiger Verteilung der Magnetisierung von Permanentmagneten

  • Published:
Electrical Engineering Aims and scope Submit manuscript

Contents

A three dimensional magnetic vector potential (m.v.p.) formulation of magnetostatic fields with non-uniform permanent magnet source distribution is given. A right-hand term expression describing the nonuniform permanent magnet source for a first order tetrahedral finite element is derived. The three dimensional finite element m.v.p. formulation presented is rather straightforward and easy to implement. Moreover, it is applicable both to uniformly and non-uniformly magnetized permanent magnet fields and hence has high generality. The field solution for a rectangular parallelepiped magnet stabilised in air is computed by the presented method, and is found to be in good agreement with measured results.

Übersicht

Es wird eine dreidimensionale Formulierung des Vektorpotentials für das magnetostatische Feld angegeben, das zur dreidimensionalen Beschreibung von Magneten mit inhomogener Magnetisierung geeignet ist. Dazu wird die FEM mit Tetraeder-Elementen herangezogen. Das Verfahren ist direkt und allgemein anwendbar. Das Feld eines in Luft stabilisierten Magneten in Form eines Quaders wurde nach der vorgestellten Methode berechnet und erwies sich in guter Übereinstimmung mit Meßergebnissen.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Similar content being viewed by others

References

  1. Gu, Q.;Lin, C.: Field computation of permanent magnets with knee points. IEEE Proc. pt. B, Elec. Pow. Appl. 136(6) (1989) 275–279

    Google Scholar 

  2. Hughes, K. B.;Gorden, D. I.: AlNiCo permanent magnet generator pole shape evaluation using finite element analysis. IEEE Trans. EC-2 (1) (1987) 16–20

    Google Scholar 

  3. Simkin, J.;Trowbridge, C. W.: Three-dimensional nonlinear electromagnetic fields using scalar potentials. IEE Proc. pt. B, Elec. Pow. Appl. 127 (6) (1980) 368–374

    Google Scholar 

  4. D'Angelo, J.;Chari, M. V. K.;Campbell, P.: Three-dimensional finite element solution for a permanent magnet axial field machine. IEEE Trans. PAS-102 (1983) 83–90

    Google Scholar 

  5. Low, T. W.;Binns, K. J.: Multistacked imbricated rotors with permanent magnet excitation: design for new magnetic materials. IEE Proc. pt. B, El. Pow. Appl. 133 (4) (1986) 205–211

    Google Scholar 

  6. Demerdash, N. A.;Nehl, T. W.;Fouad, F. A.;Mohammed, O. A.: Three dimensional finite element vector potential formulation of magnetic fields in electrical apparatus. IEEE Trans. PAS-100 (1981) 4104–4111

    Google Scholar 

  7. Chen, S.: Finite element analysis of air-demagnetization fields for permanent magnets. Master dissertation, Harbin Institute of Technology, 1990

  8. Jiang, X.;Gu, Q.: Computer-aided design of a magnetizer using the finite element method. Proc. of ICEM 88, Italy, Vol. 1 (1988) 367–370

    Google Scholar 

  9. Jiang, X.: Magnetizing field computation of isotropic permanent magnets. Proc. of Beijing International Symposium on Electromagnetic Fields (1988) 165–167

  10. Gu, Q.: Multi-hysteresis-loop model for permanent magnets. Selected Scientific Papers (in English), Shanghai Jiao Tong University, Vol. 2 (1993)

Download references

Author information

Authors and Affiliations

Authors

Rights and permissions

Reprints and permissions

About this article

Cite this article

Jiang, X., Chen, S. & Gu, Q. Three dimensional finite element vector potential formulation of magnetostatic field with non-uniform permanent magnet source distribution. Electrical Engineering 79, 23–30 (1996). https://doi.org/10.1007/BF01840704

Download citation

  • Received:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF01840704

Keywords

Navigation