High-temperature superconducting (HTS) transformer-rectifier flux pump for powering no-insulation superconducting magnet with low characteristic resistance
Physica C: Superconductivity and its Applications
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Ma, J., Geng, J., Gawith, J., & Coombs, T. (2019). High-temperature superconducting (HTS) transformer-rectifier flux pump for powering no-insulation superconducting magnet with low characteristic resistance. Physica C: Superconductivity and its Applications, 560 1-6. https://doi.org/10.1016/j.physc.2019.01.013
No-Insulation (NI) superconducting magnets have gained much popularity since they have higher engineering current density and better stability. Charging an NI coil with a low Characteristic Resistance (Rc), however, becomes problematic, because the low Rc limits the power supply voltage and make the charging extremely slow. Flux pumps can inject flux into closed High-Tc Superconducting magnets without electrical contact, making it possible to maintain a quasi-constant field in the magnet with insignificant losses. In this paper, we propose and examine new methods to speed up charging the low Rc NI coil using a transformer-rectifier type flux pump. We will show that the flux pump has improved performance compared to an external power supply in charging the NI coil.
External DOI: https://doi.org/10.1016/j.physc.2019.01.013
This record's URL: https://www.repository.cam.ac.uk/handle/1810/289059