NDLI: Design study of low ripple and large current dc power supply for fusion plant's superconducting magnet

Content Provider	IEEE Xplore Digital Library
Author	Hirotaka, C. Hiroki, N.
Copyright Year	2011
Description	Author affiliation: National Institute for Fusion Science, Oroshi 322-6, Toki, Gifu, Japan (Hirotaka, C.; Hiroki, N.)
Abstract	The helical type fusion plasma test facility or fusion plant uses a large scale superconducting magnet system to make steady state magnetic field to confinement fusion plasma. To excite this magnet, a high output current and low voltage power supply is necessary. Also, this power supply is required a low ripple to avoid noise induced into the quench detector. As a large current power supply, a thyristor rectifier is widely used but its output voltage includes a large voltage ripple. Especially, it becomes maximum when the output voltage is zero and it is required in steady state operation of superconducting dc magnet. In this paper, a dc power supply which uses a PWM converter connected in parallel as a ripple compensator is designed for a fusion plant The required output current for the converter is calculated and is shown that it becomes relative smaller than the main rectifier, and the capacity of the converter is also relative small. A simulation is performed and it shows that this configuration suppress the current ripple of the rectifier.
Starting Page	1
Ending Page	10
File Size	333902
Page Count	10
File Format	PDF
ISBN	9781612841670
e-ISBN	9789075815146
e-ISBN	9789075815153
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-08-30
Publisher Place	United Kingdom
Access Restriction	Subscribed
Rights Holder	EPE ASSOCIATION
Subject Keyword	Thyristors DC power supply Power supplies Nuclear fusion Switches Superconducting magnets Active filter Steady-state Superconducting coils Excitation system
Content Type	Text
Resource Type	Article

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