NDLI: 1400 A, +/-900 V peak pulse switch mode power supplies for SNS injection kickers

Content Provider	IEEE Xplore Digital Library
Author	Dewan, S. Eng, W. Holmes, R. Lambiase, R. Rust, K. Sandberg, J. Zeng, J.
Copyright Year	2003
Abstract	This paper describes simulation and experimental results for a 1400 A, /spl plusmn/900 V peak rated, switch mode power supply for SNS Injection Kicker Magnets. For each magnet (13 m/spl Omega/, 160 /spl mu/H), the power supply must supply controlled pulses at 60 Hz repetition rate. The pulse current must rise from zero to maximum in less than 1 millisec in a controlled manner, flat top for up to 2 millisec, and should fall in a controlled manner to less than 4 A within 500 /spl mu/s. The low current performance during fall time is the biggest challenge in this power supply. The simulation results show that to meet the controlled fall of the current and the current ripple requirements, voltage loop bandwidth of at least 10 kHz and switching frequency of at least 100 kHz are required. To achieve high power high frequency switching with IGBT switches, a series connected topology with three phase shifted (0/spl deg/, 60/spl deg/ & 120/spl deg/) converters each with 40 kHz switching frequency (IGBT at 20 kHz), has been achieved. In this paper, the circuit topology, relevant system specifications and experimental results that meet the requirements of the power supply are described in detail. A unique six pulse SCR rectifier circuit with capacitor storage has been implemented to achieve minimum pulse width to meet required performance during current fall time below 50 A due to the very narrow pulse width and nonlinearity from IGBT turn-on/off times.
Sponsorship	U.S. Dept. of Energy Office of Naval Res. Nat. Sci. Found
Starting Page	770
Ending Page	772
File Size	222614
Page Count	3
File Format	PDF
ISBN	0780377389
ISSN	10633928
DOI	10.1109/PAC.2003.1289472
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2003-05-12
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Pulsed power supplies Switches Power supplies Insulated gate bipolar transistors Pulse circuits Space vector pulse width modulation Magnets Switching frequency Circuit topology Magnetic switching
Content Type	Text
Resource Type	Article

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