Control System Modeling and Simulation of Superconducting Current Limiter with Saturated Iron Core

He Yi; Jiang Tao; Li Changbin; Wu Aiguo; Xin Yin

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Control System Modeling and Simulation of Superconducting Current Limiter with Saturated Iron Core

He Yi 1 * #,Jiang Tao 1,Li Changbin 1,Wu Aiguo 1,Xin Yin 2

1.School of Electrical Engineering and Automation, Tianjin University, Tianjin,300072

2.Innopower Superconductor Cable Co.,Ltd, Beijing,100076

*Correspondence author

#Submitted by

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Funding: Specialized Research Fund for the Doctoral Program of Higher Education of China（No.Grant No. 20090032120081）

Opened online:31 December 2012

Accepted by: none

Citation: He Yi,Jiang Tao,Li Changbin.Control System Modeling and Simulation of Superconducting Current Limiter with Saturated Iron Core[OL]. [31 December 2012] http://en.paper.edu.cn/en_releasepaper/content/4503355

This paper presents a basic structure of superconducting current limiter (SFCL) with saturated iron core and compares the advantages and disadvantages of several kinds of SFCL. On this basis, the working principle of SFCL with saturated iron core is analyzed, and a dynamic system mathematical model of this type of SFCL is established. Simulation results show that the SFCL with saturated iron core can limit the short circuit fault current quickly and effectively.In this paper, a control system model with input of DC bias current and ac supply voltage, output of ac impedance of SFCL is presented. Through simulation, it shows that when short circuit fault occurs , then the DC bias current is cut off, the ac impedance of SFCL increases gradually, at las turn into a steady state.

Keywords:system modeling; SFCL;saturated iron core; dynamic control system model; ac impendance

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