DocumentCode :
975572
Title :
The 100000 Amp DC Power Supply for a Staged Hadron Collider Superferric Magnet
Author :
Hays, Steven L. ; Claypool, Bradley ; Foster, G. William
Author_Institution :
Fermi Nat. Accel. Lab.
Volume :
16
Issue :
2
fYear :
2006
fDate :
6/1/2006 12:00:00 AM
Firstpage :
1626
Lastpage :
1629
Abstract :
A 1.5 volt 100000 A DC switcher power supply was developed for testing a superferric magnet string at Fermi National Accelerator Laboratory, FNAL. This supply was used during testing as both the ramping supply and holding supply powering a single magnet load with a total load resistance of 0.7 muOmega. The supply consists of ten paralleled switcher cells, powered by a 400 V/600 A DC power supply. Each cell consists of an IGBT H-bridge driving a step-down transformer at a switching frequency of 2 kHz. The transformer has an effective turns ratio of 224:1. The secondary consists of 32 parallel single-turn full wave rectifier windings. The rectification is done with 64 Shottky diodes. Each cell is rated at 1.5 V/10000 A. During this test each cell was operated as a constant power source without load current or field feedback. This paper will describe the design of the switcher cell and control system used during testing. We will also describe the next level of improvements to the current feedback system to improve the ramp control
Keywords :
DC-DC power convertors; Schottky diodes; accelerator magnets; feedback; power supplies to apparatus; rectifying circuits; superconducting magnets; switching convertors; 1.5 V; 100000 A; 400 V; 600 A; DC power supply; DC-DC converter; Fermi National Accelerator Laboratory; IGBT H-bridge; Shottky diodes; accelerator power supplies; current feedback system; holding power supply; parallel single-turn full wave rectifier windings; paralleled switcher cells; ramp control; ramping power supply; staged hadron collider superferric magnet testing; step-down transformer; Accelerator magnets; Control systems; Feedback; Insulated gate bipolar transistors; Laboratories; Life estimation; Magnetic switching; Power supplies; Switching frequency; Testing; Accelerator power supplies; DC-DC power conversion;
fLanguage :
English
Journal_Title :
Applied Superconductivity, IEEE Transactions on
Publisher :
ieee
ISSN :
1051-8223
Type :
jour
DOI :
10.1109/TASC.2006.869978
Filename :
1643170
Link To Document :
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