Non linear Heating Hazard Assessment on Transformer Covers and Tank Walls

作者：Lopez Fernandez Xose M^*; Penabad Duran Patricia; Turowski Janusz; Ribeiro Pedro M

来源：Przeglad Elektrotechniczny, 2012, 88(7B): 28-31.

• Overheating hazard
• Hot Spot
• Transformer cover and tank wall
• Poynting%26apos
• s Vector

This paper evaluates the heating hazard on transformer covers and tank walls by means of an electromagnetic analytical formulation linked with thermal FEM. A non linear magnetic permeability approximation is introduced in the computation methodology, in which power losses are calculated into the thin skin depth penetration of electromagnetic wave using Poynting%26apos;s Vector. The temperature is computed on metallic structural parts heated by electromagnetic induction. The accuracy of obtained results and non linear permeability approximation are validated experimentally.

• 出版日期2012