Electrical and Thermal Behaviour of High Temperature Superconductors for SFCL Applications

Nayak, Saurav Kumar (2017) Electrical and Thermal Behaviour of High Temperature Superconductors for SFCL Applications. MTech thesis.

[img]PDF (Fulltext is restricted upto 28.01.2020)
Restricted to Repository staff only



The aim of this study is to experimentally determine the thermal and electrical properties of a 2G HTS tape to be used in construction of a Superconducting Fault Current Limiter (SFCL). Minimum HTS tape length required for different source voltage and current ratings for safe operations during fault conditions were determined. Three different mechanical frames for Fault Current Limiter (FCL) applications were designed for three configurations of SFCL. Two different experiments were conducted using one of the mechanical frames. The first experiment was conducted to determine the voltage vs. current characteristics of the HTS wire. Subsequently the value of critical current of the tape was determined. The variation of resistance of copper joint with respect to current was also determined. The second experiment recorded both the voltage and temperature of the HTS tape at different values of current. Four different trials were conducted in which temperature and corresponding voltage characteristics were correlated. In both the cases direct current was used. Different values of critical current were found when the current was being ramped up and when the current was being ramped down. The temperature of the tape was then allowed to rise until the tape got burnt.

Item Type:Thesis (MTech)
Uncontrolled Keywords:HTS wire; Fault current limiter
Subjects:Engineering and Technology > Mechanical Engineering > Cryogenics
Divisions: Engineering and Technology > Department of Mechanical Engineering
ID Code:9002
Deposited By:Mr. Kshirod Das
Deposited On:26 Apr 2018 17:05
Last Modified:26 Apr 2018 17:05
Supervisor(s):Sahoo, Ranjit Kumar

Repository Staff Only: item control page