Supervisory system for superconductive transformer
US5225395A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 14, 1992 |
| Grant date | Jul 6, 1993 |
| Priority date | — |
| Expiry date | Feb 14, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S505/851
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A supervisory system is used for a superconductive transformer which comprises primary to Nth-order windings (N is an integer of not less than 2) windings, and the windings are formed of superconductive lines and are wound around an outer surface of a signal core. The supervisory system can detect quench occurring in the windings. The supervisory system includes N voltage sensors for detecting terminal voltages of the windings of the superconductive transformer, N current sensors for detecting currents of the windings, a magnetic flux detector mounted on the core of the transformer, and a discriminator for discriminating a quenched one of the windings on the basis of change patterns unique to output signals from the voltage sensors, output signals from the current sensors, and an output signal from the magnetic flux detector, and a switch for cutting off supply of an electrical power to the superconductive transformer according to an output signal from the discriminator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.