Patent ID: 11869709
Assignee: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A quench protection circuit, comprising: a superconducting unit, a first diode integrated element, a low-temperature superconducting switch and a thermal shield;
wherein the superconducting unit is composed of M superconducting coils connected in series, wherein M is an integer number greater than 1;
a non-serial connection end of a first superconducting coil of the M superconducting coils and a non-serial connection end of an M-th superconducting coil of the M superconducting coils are respectively connected to current leads, and the current leads are connected to an excitation power supply;
one end of the low-temperature superconducting switch is connected to the non-serial connection end of the first superconducting coil, and the other end of the low-temperature superconducting switch is connected to the non-serial connection end of the M-th superconducting coil;
the first diode integrated element is connected in parallel with the low-temperature superconducting switch to protect the low-temperature superconducting switch;
the thermal shield is connected in parallel to both ends of any superconducting coil subset that are spatially symmetric in the superconducting unit, the thermal shield is configured to transfer a magnetic energy in a superconducting coil during a quench process;
the superconducting coil subset is composed of one superconducting coil or a plurality of superconducting coils, or composed of one superconducting sub-coil or composed of the one superconducting sub-coil and the one superconducting coil, wherein the one superconducting sub-coil is a part of the one superconducting coil.