Tank temperature rise verification
Summary
The coupled magnetic–thermal simulation of a rectifier transformer has been performed. The presence of a complex LV busbars system makes the localization of the hot spots not trivial.
The simulation provided a very good match with the measured tank temperature value and localization.
Description
50 MVA rectifier transformer.
Technical Challenge

  • Complex LV bars system.
  • A coupled 3-dimensional magnetic-thermal simulation.
  • Complex coil building and circuit.
  • Mild steel tank wall and non magnetic steel parts had to be taken into account.


Bar system
Results


 

 

 

 

Conclusions
Good match between simulations and measurements. Simulations may be used to predict and prevent failures. In this way alternative solution can be studied at a design stage if the results of the simulations are not the ones expected.


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