scholarly journals Transition frequency of transport ac losses in high temperature superconducting coated conductors

2019 ◽  
Vol 126 (6) ◽  
pp. 063901 ◽  
Author(s):  
Pengbo Zhou ◽  
Guangtong Ma ◽  
Loïc Quéval
Keyword(s):  
High Temperature ◽  
Coated Conductors ◽  
Transition Frequency ◽  
Ac Losses ◽  
High Temperature Superconducting ◽  
Transport Ac Losses

Modeling and verification of the equivalent circuit for high temperature superconducting partial-core transformer with ReBCO-coated conductors

2018 ◽  
Vol 37 (3) ◽  
pp. 1228-1243
Author(s):  
Daoyu Hu ◽  
Jianwen Zhang ◽  
Feng Gu ◽  
Zhuyong Li
Keyword(s):  
High Temperature ◽  
Equivalent Circuit ◽  
Modeling Method ◽  
Coated Conductors ◽  
Ac Losses ◽  
Content Type ◽  
High Temperature Superconducting ◽  
Iterative Computation ◽  
Core Losses ◽  
New Type

Purpose The purpose of this study is to propose a modeling method of the equivalent circuit for a new type of high-temperature superconducting partial-core transformer (HTS-PCT) made of ReBCO-coated conductors. Design/methodology/approach The modeling process is based on the “Steinmetz” equivalent circuit. The impedance components in the circuit are obtained by the calculations of the core losses and AC losses of the HTS windings by using theoretical methods. An iterative computation is also used to decide the equivalent resistances of the AC losses of the primary and secondary HTS windings. The reactance components in the circuit are calculated from the energy stored in the magnetic fields by finite element method. The validation of the modeling method is verified by experimental results Findings The modeling method of the equivalent circuit of HTS-PCT is valid, and an equivalent circuit for HTS-PCT is presented. Practical implications The equivalent circuit of HTS-PCT could be obtained by the suggested modeling method. Then, it is easy to analyze the characteristics of the HTS-PCT by its equivalent circuit. Moreover, the modeling method could also be useful for the design of a specific HTS-PCT. Originality/value The study proposes a modeling method of the HTS-PCT made of the second-generation HTS tapes, i.e. ReBCO-coated conductors.

scholarly journals Investigations on Quench Recovery Characteristics of High-Temperature Superconducting Coated Conductors for Superconducting Fault Current Limiters

Electronics ◽  
2021 ◽  
Vol 10 (3) ◽  
pp. 259
Author(s):  
Wei Chen ◽  
Peng Song ◽  
Hao Jiang ◽  
Jiahui Zhu ◽  
Shengnan Zou ◽  
...  
Keyword(s):  
High Temperature ◽  
Smart Grids ◽  
Recovery Time ◽  
Coated Conductors ◽  
Transfer Model ◽  
Fault Current ◽  
High Temperature Superconducting ◽  
Fault Current Limiters ◽  
Recovery Characteristic ◽  
The Impact

Superconducting fault current limiters (SFCLs) are attracting increasing attention due to their potential for use in modern smart grids or micro grids. Thanks to the unique non-linear properties of high-temperature-superconducting (HTS) tapes, an SFCL is invisible to the grid with faster response compared to traditional fault current limiters. The quench recovery characteristic of an HTS tape is fundamental for the design of an SFCL. In this work, the quench recovery time of an HTS tape was measured for fault currents of different magnitudes and durations. A global heat transfer model was developed to describe the quench recovery characteristic and compared with experiments to validate its effectiveness. Based on the model, the influence of tape properties on the quench recovery time was discussed, and a safe margin for the impact energy was proposed.

AC Losses in a High Temperature Superconducting Generator

2005 ◽  
Vol 15 (2) ◽  
pp. 2162-2165 ◽  
Author(s):  
K. Sivasubramaniam ◽  
X. Huang ◽  
D. Ryan ◽  
K. Weeber ◽  
J.W. Bray ◽  
...  
Keyword(s):  
High Temperature ◽  
Ac Losses ◽  
High Temperature Superconducting

Numerical Study on Overcurrent Process of High-Temperature Superconducting Coated Conductors

2016 ◽  
Vol 30 (11) ◽  
pp. 3263-3270 ◽  
Author(s):  
J. Sheng ◽  
D. Hu ◽  
K. Ryu ◽  
H. S. Yang ◽  
Z. Y. Li ◽  
...  
Keyword(s):  
High Temperature ◽  
Numerical Study ◽  
Coated Conductors ◽  
High Temperature Superconducting
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