A full-wave HTS flux pump using a feedback control system

Transformer-rectifier flux pumps are DC superconducting power supplies capable of charging superconducting magnets to high currents and stored magnetic energies. Here, we demonstrate a full-wave superconducting flux pump assembled from high-temperature superconducting (HTS) wire that utilizes superc...

Full description

Saved in:
Bibliographic Details
Published in:Superconductivity 2023-12, Vol.8, p.100064, Article 100064
Main Authors: Rice, James H.P., Mallett, Ben P.P., Moseley, Dominic A., Petrov, Alexander, Zhang, Heng, Wray, Steven, Badcock, Rodney A.
Format: Article
Language:English
Subjects:
Circuit modelling
Flux pump
High current
High-temperature superconductor
Power supply
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Transformer-rectifier flux pumps are DC superconducting power supplies capable of charging superconducting magnets to high currents and stored magnetic energies. Here, we demonstrate a full-wave superconducting flux pump assembled from high-temperature superconducting (HTS) wire that utilizes superconducting switches controlled by applied magnetic field. A negative DC offset occurs in the superconducting secondary of the circuit during operation which is related to the output load current. A feedback control system is proposed and demonstrated to account for the negative DC offset. Increasing the primary current proportional to the load current during operation allowed for the maximum output of the flux pump to be increased from 35 A to more than 275 A. These results are reproduced using a coupled electrical- and magnetic–circuit model formulated in the MATLAB Simulink® package.
ISSN:2772-8307
2772-8307
DOI:10.1016/j.supcon.2023.100064