Numerical and experimental evaluation of magnetostriction and magnetic forces on transformer stacks and joints for the assessment of core vibrations
| Autor: | Jan Rens, Sigrid Jacobs, Maarten Van Poucke, Emmanuel Attrazic |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
010302 applied physics
Materials science business.industry Electrical engineering Magnetostriction 02 engineering and technology Structural engineering engineering.material 021001 nanoscience & nanotechnology 01 natural sciences Magnetic flux law.invention Vibration law 0103 physical sciences engineering 0210 nano-technology business Anisotropy Material properties Transformer Electrical steel |
| Zdroj: | 2017 IEEE Energy Conversion Congress and Exposition (ECCE). |
| DOI: | 10.1109/ecce.2017.8096567 |
| Popis: | This paper deals with the prediction of mechanical vibrations that exist on transformer cores due to magnetostriction and magnetic forces. Several single-phase transformer topologies are investigated, demonstrating the consequences of the configuration of the joints, with the aim to reveal the relative contributions of magnetostrictive and magnetic forces to the final vibration level. The results are obtained through advanced 3D electromagnetic and mechanical FE simulations, taking into account non-linear and anisotropic magnetic and mechanical material properties as well as parasitic airgaps. The results are compared with measurements to allow an assessment of the methodology. The research is based on a non-oriented, low-loss electrical steel from ArcelorMittal, that is typically used in small auxiliary transformers. |
| Databáze: | OpenAIRE |
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