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High-temperature superconducting (HTS) transformer-rectifier flux pump for powering no-insulation superconducting magnet with low characteristic resistance

Accepted version
Peer-reviewed

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Type

Article

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Abstract

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.

Description

Keywords

HTS flux pump, No-insulation magnets, HTS magnets, Low Characteristic Resistance

Journal Title

Physica C: Superconductivity and its Applications

Conference Name

Journal ISSN

0921-4534
1873-2143

Volume Title

560

Publisher

Elsevier BV
Sponsorship
Engineering and Physical Sciences Research Council (EP/R016615/1)
Engineering and Physical Sciences Research Council (EP/R042918/1)