Transformer current sensor for superconducting magnetic coils

Patent · Tue Feb 23 00:00:00 EST 1988

OSTI ID:5023227

Shen, S S; Wilson, C T

This patent describes a transformer current sensor for detecting resistance voltage losses in a superconducting coil comprising: cylindrical primary terms arranged in series with the superconducting coil to carry a primary current; and cylindrical secondary terms including an active winding and a dummy winding. The active winding and the dummy winding are coaxial, of substantially the same construction and arranged to mutually negate voltages induced by any commonly experienced magnetic field. The active winding but not the dummy winding is fixedly arranged coaxially within and substantially longitudinally coextensive with the primary turns, and the dummy winding is longitudinally separated from the active winding sufficient distance that the dummy winding is not influenced by magnetic fields generated by the primary current passing through the primary turns.

• Assignee: Dept. of Energy, Washington, DC
• Patent Number(s): US 4727316
• Application Number: TRN: 88-019308
• OSTI ID: 5023227
• Resource Relation: Patent File Date: Filed date 16 Apr 1985
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
SUPERCONDUCTING COILS
TRANSFORMERS
VOLTMETERS
ELECTRIC CURRENTS
ELECTRIC POTENTIAL
MAGNET COILS
MAGNETIC FIELDS
SUPERCONDUCTIVITY
CURRENTS
ELECTRIC COILS
ELECTRIC CONDUCTIVITY
ELECTRIC MEASURING INSTRUMENTS
ELECTRICAL EQUIPMENT
ELECTRICAL PROPERTIES
EQUIPMENT
MEASURING INSTRUMENTS
PHYSICAL PROPERTIES
420201* - Engineering- Cryogenic Equipment & Devices