Flux Trapping Implementation in High-Temperature Superconducting Magnets for Superconducting Electric Machines
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY(2024)
Abstract
This paper investigates a novel flux-trapping technique in Type II High-Temperature Superconducting (HTS) rotor coils. This method can be implemented in superconducting electrical machines to take advantage of in situ magnetisation by using the stator coils to energise the rotor HTS coils. This study investigates the feasibility of energizing a rotor HTS coil using a stator winding. The methodology includes modelling and test-rig development and aims to improve practical HTS system implementation for aerospace propulsion applications. Experimental results show that the design is feasible by observing a slow decay of the magnetic field in the air-gap after the external current source has been turned off. The rate of decay of the magnetic field in the airgap is dependent on the resistance of the HTS joint.
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Key words
Coils,High-temperature superconductors,Stators,Rotors,Air gaps,Superconducting magnets,Stator windings,Flux trapping,high-temperature Superconductor,superconducting Electric machines
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