Alternative power supply and dump resistor connections for similar, mutally coupled, superconducting coils
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
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
700202 -- Fusion Power Plant Technology-- Magnet Coils & Fields
700203* -- Fusion Power Plant Technology-- Power Supplies
Energy Storage
COUPLING
ELECTRICAL EQUIPMENT
ELECTROMAGNETS
ELECTRONIC CIRCUITS
ELECTRONIC EQUIPMENT
EQUIPMENT
MAGNETIC MIRRORS
MAGNETS
MFTF DEVICES
OPEN PLASMA DEVICES
POWER SUPPLIES
RESISTORS
SUPERCONDUCTING DEVICES
SUPERCONDUCTING MAGNETS
THERMONUCLEAR DEVICES