Permanent magnets dealt with boundary-integral approach

The magnetic field created by permanents magnets can be effectively analysed by the use of the indirect boundary-integral model. The fictitious magnetic densities upon both pole surfaces are imagined. They are considered us unique sources of the conservative magnetic field. The approach leads to the advanced analytical expressions for usual magnetic quantities, by means of which various technical objects containing the permanent magnets can be analysed. In the case of disc- or ring magnets, special solutions are obtained, when Lipschitz-Hankel integrals are employed to express the magnetic scalar potential. Special considerations are devoted to the magnetic energy created by permanent magnets. The original test software has been performed and the test results of the magnetic energy computation are presented.