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

Daoyu Hu (Department of Electrical Engineering, Shanghai Jiao Tong University, Shanghai, China)
Jianwen Zhang (Department of Electrical Engineering, Shanghai Jiao Tong University, Shanghai, China)
Feng Gu (Aircraft R&D Institute, AVIC Harbin Aircraft Industry Group, Harbin, China)
Zhuyong Li (Department of Electrical Engineering, Shanghai Jiao Tong University, Shanghai, China)

Abstract

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.

Keywords

Citation

Hu, D., Zhang, J., Gu, F. and Li, Z. (2018), "Modeling and verification of the equivalent circuit for high temperature superconducting partial-core transformer with ReBCO-coated conductors", COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, Vol. 37 No. 3, pp. 1228-1243. https://doi.org/10.1108/COMPEL-05-2017-0188

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Publisher

:

Emerald Publishing Limited

Copyright © 2018, Emerald Publishing Limited

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