NDLI: Coupled Analysis and Protection of the HTS DC Magnet for DC Induction Heater in Dynamic Disturbance

Content Provider	IEEE Xplore Digital Library
Author	Xu, D. Wang, Y. Li, Z.Y. Gao, H. Hong, Z. Jin, Z.
Copyright Year	2002
Description	Designing a high temperature superconducting (HTS) DC induction heater requires the HTS magnet to be equipped with an HTS coil, iron core and air gap. A large amount of magnetic energy is stored in the iron core and must be transferred outside the magnet during system collapses. The nature of the operating conditions and dynamic heating processes make the magnet coil a substantial nonlinear inductive load for the power supply which can result in system collapse and potentially damage the peripheral circuit of the magnet. Therefore, a protection system is recommended for this magnet. This paper proposes an active protection system for a DC HTS induction heater composed of a magnet with an iron core and YBCO coated conductor (CC) tape. A Matlab/Simulink-based simulation model was coupled with a Comsol-based finite element method model to combine the electrical and electromagnetic characteristics to optimize the design configuration of the protection circuit. Experiments with different magnet operating currents and dump resistors were carried out to verify the feasibility of this proposed protection system for magnets with and without an iron core. The results show that the proposed scheme performs within desired specifications and that the dissipation efficiency and velocity vary depending upon different values of the dump resistor.
Sponsorship	Council on Superconductivity Appl. Superconductivity Conference Inc MIT
Starting Page	1
Ending Page	5
Page Count	5
File Size	980131
File Format	PDF
ISSN	10518223
Volume Number	25
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Magnetic cores Magnetic flux Superconducting magnets Iron Coils Resistors Magnetic circuits iron core Active protection detect and dump HTS induction heater HTS Magnet
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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