Alternative power supply and dump resistor connections for similar, mutally coupled, superconducting coils

Conference · Wed Nov 30 00:00:00 EST 1983

OSTI ID:7091573

Owen, E W; Shimer, D W; Wang, S T

Alternative methods of connecting similar mutually coupled coils to their power supplies and dump resistors are investigated. The circuits are evaluated for both operating and fault conditions. The factors considered are the voltage to ground during a dump, short circuits, open circuits, quenches, and failure of the protection system to detect a quench. Of particular interest are the currents induced in coils that remain superconducting when one or more coils quench. The alternative connections include combined power supplies, individual dump resistors, combined resistors and series and parallel dump resistors. A new circuit that contains coupling resistors is proposed. The coupling resistors do not affect normal fast dumps but reduce the peak induced currents while also reducing the energy rating of the dump resistors. Another novel circuit, the series circuit with diodes, is discussed. The MFTF-B central-cell solenoids are used as an example.

• Research Organization: Lawrence Livermore National Lab., CA (USA)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 7091573
• Report Number(s): UCRL-89204; CONF-831203-141; ON: DE84012602
• Resource Relation: Conference: 10. symposium on fusion engineering, Philadelphia, PA, USA, 5 Dec 1983; Other Information: Portions are illegible in microfiche products
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
MFTF DEVICES
SUPERCONDUCTING MAGNETS
POWER SUPPLIES
COUPLING
ELECTRONIC CIRCUITS
RESISTORS
ELECTRICAL EQUIPMENT
ELECTROMAGNETS
ELECTRONIC EQUIPMENT
EQUIPMENT
MAGNETIC MIRRORS
MAGNETS
OPEN PLASMA DEVICES
SUPERCONDUCTING DEVICES
THERMONUCLEAR DEVICES
700203* - Fusion Power Plant Technology- Power Supplies
Energy Storage
700202 - Fusion Power Plant Technology- Magnet Coils & Fields