FINITE-ELEMENT MODELING OF 3D MOVING CONDUCTOR DEVICES WITH LOW CONDUCTIVITY

Devices which include moving conductors which are invariant in cross s ection normal to the direction of motion may be modelled using a finit e element scheme which incorporates the Minkowski transformation. Thre e components of magnetic vector potential and electric scalar potentia l are required inside the moving medium. When the conductivity of the moving medium is very low, the magnetic field induced by the eddy curr ents is relatively small and can be neglected. In this case the proble m may be formulated more economically in terms of two static scalar so lutions. The two methods are compared with each other and with analyti c solutions and experimental results.