Speaker
Description
A superconducting diode is a device whose critical current is different depending on the direction of the current. It can be obtained using REBCO tapes,in which rectified motion of flux quantum is observed [1]. In this study, we develop a concept of wireless HTS magnet charging utilizing such HTS REBCO diodes. This concept was first we introduced at the last Applied Superconductivity Conference, with a non optimized device charging only 1 A in a mini coil.
We present here a detailed study of this wireless charging structure using coupled thermo-electrical modeling, in order to estimate its potential to provide low-loss DC power supply in cryogenic environment.
The requirement for optimizing REBCO conductor for this novel application will also be discussed based on this modelling effort.
It will be shown that this concept can enable quasi-persistent mode operation in REBCO coils by compensating the eventual joint losses.
We will also present a more meaningful proof of concept featuring tens of meter of tape, enabling the charge of a lab-scale magnet.
