Computer model of the MFTF-B neutral beam Accel dc power supply

Conference · Wed Nov 30 04:00:00 EST 1983

OSTI ID:7091555

Wilson, J H

Using the SCEPTRE circuit modeling code, a computer model was developed for the MFTF Neutral Beam Power Supply System (NBPSS) Accel dc Power Supply (ADCPS). The ADCPS provides 90 kV, 88 A, to the Accel Modulator. Because of the complex behavior of the power supply, use of the computer model is necessary to adequately understand the power supply's behavior over a wide range of load conditions and faults. The model developed includes all the circuit components and parameters, and some of the stray values. The model has been well validated for transients with times on the order of milliseconds, and with one exception, for steady-state operation. When using a circuit modeling code for a system with a wide range of time constants, it can become impossible to obtain good solutions for all time ranges at once. The present model concentrates on the millisecond-range transients because the compensating capacitor bank tends to isolate the power supply from the load for faster transients. Attempts to include stray circuit elements with time constants in the microsecond and shorter range have had little success because of huge increases in computing time that result. The model has been successfully extended to include the accel modulator.

• Research Organization: Lawrence Livermore National Lab., CA (USA)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 7091555
• Report Number(s): UCRL-89223; CONF-831203-144; ON: DE84012598
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700203* -- Fusion Power Plant Technology-- Power Supplies
Energy Storage
COMPUTERIZED SIMULATION
ELECTRICAL FAULTS
ELECTRONIC EQUIPMENT
EQUIPMENT
MAGNETIC MIRRORS
MATHEMATICAL MODELS
MFTF DEVICES
NEUTRAL BEAM SOURCES
OPEN PLASMA DEVICES
POWER SUPPLIES
SIMULATION
THERMONUCLEAR DEVICES