Electromagnetic Forces and Mechanical Stresses in Power Transformers: An Analysis Based on Computer Aided Engineering

This article performs the electromagnetic study of a transformer prototype, through the application of computer simulations with the Finite Element Method using the ANSYS Workbench© software. The study analyses the behavior of electromagnetic forces in transformers, due of the short circuit current, allowing the measurement of radial and axial Lorentz forces at different locations in the windings, and check the mechanical stress suffered. A coupled electromagnetic-structural simulation is performed, where the hoop and compressive stresses are analyzed about the transformer windings.