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- Title
Investigation on thermal effect of bulk high-temperature superconductors under varying external magnetic field.
- Authors
Zhang, Yufeng; He, Jinfei; Chen, Tiantian; Wang, Jiayi
- Abstract
Superconducting bulks applied to high-temperature superconducting (HTS) maglev vehicles are susceptible to magnetic field, resulting in alternating current (AC) losses and heat generation, which affect the stability of the suspension system. Therefore, the thermal effect of superconducting bulk under external magnetic field is worth studying. The paper uses finite element software to establish a 2D electromagnetic-thermal coupling model. The distribution and variation of HTS bulks' temperature under varying external magnetic field are simulated and analyzed, and the loss and temperature rise of rectangular bulks with different thicknesses are studied. Finally, the effect of increasing the critical current density on the thermal effect of the superconducting bulk is discussed. The results show that the temperature rise of bulk has a positive correlation with the amplitude and frequency of external magnetic field. The maximum temperature is affected by the angle of magnetic field. Under the same external magnetic field, the bulk with smaller thickness produces smaller loss and temperature rise. The research results can provide important references for the operation and furniture design of HTS maglev vehicles.
- Subjects
MAGNETIC fields; MAGNETIC levitation vehicles; FURNITURE design; CRITICAL currents; ALTERNATING currents; HIGH temperature superconductors; SUPERCONDUCTING magnets
- Publication
International Journal of Modern Physics B: Condensed Matter Physics; Statistical Physics; Applied Physics, 2023, Vol 37, Issue 28, p1
- ISSN
0217-9792
- Publication type
Article
- DOI
10.1142/S0217979223502442