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This paper presents a novel experimental set up to measure the deformation in an iron sheet under the influence of electromagnetic field, and the results of Finite Element Analysis used for segregating the magnetic forces and magnetostriction induced mechanical deformation. The magnetic forces are calculated using the virtual work principle and the magnetostriction is modeled by means of an energy-based...
This paper presents an efficient method to calculate the magnetic forces on bodies in contact. The forces are computed through the local application of the virtual work principle on degenerated air-gap elements. The results from this method are compared with those from other software and validated with measurements on a permanent magnet setup. Not only is this technique very accurate, but it also...
This paper presents an efficient method to calculate the magnetic forces on bodies in contact. The forces are computed through local application of the virtual work principle on degenerated airgap elements. These results are compared with those from different models and validated with measurements on a permanent magnet setup. Not only is this technique very accurate, but also reduces the computational...
In the case of rotating electrical machines, the magnetic forces acting on the stator teeth are the principal electromagnetic cause of vibrations. Based on this fact, this paper presents a method to compute the vibrations of an induction motor with the aid of magnetic nodal forces. An accurate computation of local or nodal forces is essential in problems pertaining to vibration and noise analysis...
This paper presents an initial study to provide further insight on the conditions under which a natural bar breakage was reproduced experimentally. With this aim several magnitudes at a rotor bar's narrowing (hot spot) in an induction motor during heavy transients: long startup and plug stopping, are calculated in order to compare it with the experimental data, which suggested that the bar breakage...
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