Simulation of Nonlinear Magnetic Devices Using Boundary Element Method Based Software Tools
نویسنده
چکیده
The Boundary Element Method (BEM) is a well-established numerical method for simulation of physical phenomena including structural, fluid flow and heat transfer analysis. It is particularly interesting in electromagnetics because of its handling of open region problems and its accuracy in computing the fields where gradients are high. Classical BEM, however, does not inherently contain a facility for dealing with regions with inhomogeneous material properties such as those exhibited by realistic magnetic materials. Furthermore, the concept of a reliable and meaningful error calculation is not as well established as it is with the more common Finite Element Method (FEM). This paper outlines a method for handling the effects of material nonlinearity in magnetics problems. A meaningful way of calculating the error in discrete parts of the model is also presented. Finally, the approach is verified through the comparison of results from a commercial BEM package to an analytic case.
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