Abstract

The range of permanent magnet materials for electromagnetic-device applications has recently been augmented by the commercial development of Samarium Cobalt. Of particular importance is the magnetic characteristic of SmCo5 in relation to other available hard magnetic materials. The most striking aspects of the material are its coercivity and possible maximum energy level; while the most gratifying aspect is its predictable performance. In order to make best use of a high quality and relatively expensive magnetic material such as SmCo5, one should strive for optimized designs. In view of the complicated geometries involved, significant leakage-flux particularly caused by compact design, and nonlinear ferromagnetic materials used in making up the electromagnetic device, it becomes necessary to take resort to numerical solutions to determine the effect of variation of significant parameters involved and to achieve an optimized design for the device. The paper presents the modeling techniques for simulating permanent magnets in computer-aided analysis, methods to deal with various geometries and inherent symmetry that may be a characteristic of the problem. By numerically analyzing the model, detailed flux-distribution plots have been obtained by means of a high-speed digital computer. The paper discusses typical cases that have been studied.

Notes

Author's manuscript; published in IEEE Transactions on Magnetics, Vol. MAG-16, No. 5, Sept. 1980, pp. 797-799.

Keywords

Samarium Colbalt, permanent magnet materials, aerospace instrument devices, SmCo5, flux distribution plots

Subject Categories

Electromagnetic devices, Computer-aided design

Disciplines

Electromagnetics and photonics

Publisher

IEEE

Publication Date

9-1980

Rights Information

(c) 1980 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.

Rights Holder

IEEE

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