Wide-scale current change digital differentiator and application thereof on superconducting magnet

• Main Authors: HU YANLAN, WANG TENG, LU HUI, LIU HUAICHAO, NI QICAI, ZHANG JILIN, PAN CHAO, YAN QING, XIAO YEZHENG, ZHENG LONGGUI
• Format: Patent
• Language: Chinese; English
• Published: 24.05.2024
• Subjects: CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS; MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; PRINTED CIRCUITS; TESTING

The invention discloses a wide-scale current change digital differentiator and an application thereof on a superconducting magnet. The digital differentiator comprises a metal shielding case, 14 differential board cards, a relay board, a touch screen, a signal conversion board, a linear power supply, a switching power supply, a 220V power socket, a switch and a plurality of flat cables, the digital differentiator derives a pulse current signal injected into the magnet to obtain an induced voltage signal, the induced voltage signal is sent to the secondary compensation system, residual noise after primary compensation of the same winding is offset, and finally the induced voltage signal is sent to the quench judgment and interlocking protection device. Compared with a traditional analog differentiator, the digital differentiator has the advantages that parameters are flexibly adjusted, the application coverage range is wide, and different parameters can be set for current signals with different slopes so as to