Overview of H-Formulation: A Versatile Tool for Modeling Electromagnetics in High-Temperature Superconductor Applications

B Shen, F Grilli, T Coombs - IEEE access, 2020 - ieeexplore.ieee.org
This paper reviews the modeling of high-temperature superconductors (HTS) using the
finiteelement method (FEM) based on the H-formulation of Maxwell's equations. This …

Survey on high-temperature superconducting transformer windings design

A Moradnouri, A Ardeshiri, M Vakilian… - … of Superconductivity and …, 2020 - Springer
Utilization of superconducting equipment increases every day due to availability of the HTS
tapes with reasonable prices, commercially. Since 1997, many high-temperature …

Design of a single-phase 6.5 MVA/25 kV superconducting traction transformer for the Chinese Fuxing high-speed train

W Song, Z Jiang, M Staines, RA Badcock… - International Journal of …, 2020 - Elsevier
Traction transformers are critical components of Chinese high-speed-trains. We are currently
building a single–phase 6.5 MVA superconducting traction transformer which can achieve …

AC loss simulation in a HTS 3-Phase 1 MVA transformer using H formulation

W Song, Z Jiang, X Zhang, M Staines, RA Badcock… - Cryogenics, 2018 - Elsevier
One of critical issues for HTS transformers is achieving sufficiently low AC loss in the
windings. Therefore, accurate prediction of AC loss is critical for the HTS transformer …

15% reduction in AC loss of a 3-phase 1 MVA HTS transformer by exploiting asymmetric conductor critical current

Z Jiang, W Song, X Pei, J Fang… - Journal of Physics …, 2021 - iopscience.iop.org
An asymmetric dependence of the critical current on the direction of an applied magnetic
field in HTS coated conductors has a non-trivial influence on the AC loss of coil windings …

[HTML][HTML] AC loss study on a 3-phase HTS 1 MVA transformer coupled with a three-limb iron core

Y Wu, S You, J Fang, RA Badcock, NJ Long, Z Jiang - Superconductivity, 2024 - Elsevier
High-temperature superconducting (HTS) technology provides an alternative approach to
achieve compact transformers. Addressing AC loss in the HTS winding is crucial for HTS …

AC loss modelling and measurement of superconducting transformers with coated-conductor Roebel-cable in low-voltage winding

E Pardo, M Staines, Z Jiang… - … Science and Technology, 2015 - iopscience.iop.org
Power transformers using a high temperature superconductor (HTS) ReBCO coated
conductor and liquid nitrogen dielectric have many potential advantages over conventional …

AC loss effect of high-order harmonic currents in a single-phase 6.5 MVA HTS traction transformer

W Song, J Fang, Z Jiang, M Staines… - IEEE Transactions on …, 2019 - ieeexplore.ieee.org
Traction transformer is one of the critical electrical devices in high-speed trains. To increase
transformer efficiency up to 99% and reduce weight and fire risks, we are currently building a …

Development of a 1250-kVA superconducting transformer and its demonstration at the superconducting substation

S Dai, T Ma, Q Qiu, Z Zhu, Y Teng… - IEEE Transactions on …, 2015 - ieeexplore.ieee.org
A three-phase 1250-kVA/10.5-kV/0.4-kV hightemperature superconducting (HTS)
transformer has been designed and fabricated. The windings of the HTS transformer are …