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The 100,000 amp dc power supply for a staged hadron collider superferric magnet

Author: G William FosterSteven L HaysBradley ClaypoolFermi National Accelerator Laboratory.United States. Department of Energy.All authors
Publisher: Washington, D.C. : United States. Dept. of Energy ; Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 2005.
Edition/Format:   eBook : Document : Conference publication : National government publication : English
Database:WorldCat
Summary:
A 1.5 volt 100,000 amp DC switcher power supply was developed for testing a superferric magnet string at 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{micro} Ohms. The supply consists of ten paralleled switcher cells, powered by a 400 volt/600 Amp DC power supply. Each cell consists of an IGBT H-bridge driving  Read more...
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Details

Material Type: Conference publication, Document, Government publication, National government publication, Internet resource
Document Type: Internet Resource, Computer File
All Authors / Contributors: G William Foster; Steven L Hays; Bradley Claypool; Fermi National Accelerator Laboratory.; United States. Department of Energy.; United States. Department of Energy. Office of Scientific and Technical Information.
OCLC Number: 316326886
Notes: Published through the Information Bridge: DOE Scientific and Technical Information.
09/01/2005.
"FERMILAB-CONF-05-378-AD."
Presented at MT-19: 19th International Conference on Magnet Technology, Genova (Genoa), Italy, 18-23 Sep 2005.
Foster, G. William; Hays, Steven L.; Claypool, Bradley.
Description: 4 pages.
Details: Mode of access: World Wide Web.

Abstract:

A 1.5 volt 100,000 amp DC switcher power supply was developed for testing a superferric magnet string at 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{micro} Ohms. The supply consists of ten paralleled switcher cells, powered by a 400 volt/600 Amp 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 volts/10,000 amps. 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.

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