| Title |
Short Circuit Electromagnetic Force Prediction by Coupled Electromagnetic-Mechanical Field Analysis of Dry-Type Transformer |
| Authors |
안현모(Ahn, Hyun-Mo) ; 한성진(Hahn, Sung-Chin) |
| DOI |
https://doi.org/10.5370/KIEE.2011.60.2.301 |
| Keywords |
Electromagnetic force ; Short-circuit force ; Short-circuit current ; Coupled analysis ; Dry-type transformer ; Electromagnetic field analysis ; Mechanical field analysis ; Structural analysis |
| Abstract |
This paper deals with the coupled electromagnetic-mechanical field analysis for short-circuit electromagnetic force of the dry-type transformer. The short-circuit currents are calculated using external circuit in accordance with short-circuit test equipment. According to short-circuit current, the generated magnetic leakage flux density in dry-type transformer model is calculated by finite element method. The radially-directed electromagnetic forces in windings are calculated using electromagnetic field analysis and then axially-directed electromagnetic forces in windings are calculated using electromagnetic-mechanical field analysis. The calculated axially-directed electromagnetic forces in high voltage winding are compared to those of measured ones and showed good agreement with experimental results. |