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

• DOI: 10.1016/j.supcon.2024.100095
• Publication Date: 2024-04-13T02:31:30Z
• Authors: Yue Wu; Shuangrong You; Jin Fang; Rodney A. Badcock; Nicholas J. Long; Zhenan Jiang
• Keywords: Energy efficient transformer

High-temperature superconducting (HTS) technology provides an alternative approach to achieve compact transformers. Addressing AC loss in the HTS winding is crucial for transformer applications. Most numerical studies on transformers have neglected influence of iron cores. This work carries out study explore impact core windings a 3-phase 1 MVA coupled with it. simulations both and without are conducted by adopting three-dimensional (3D) T-A homogenization method. When incorporated, saturation magnetic fields materials, flux diverters (FDs) different geometries, variations turn spacings LV composed Roebel cables considered investigate their winding. The inclusion leads 1.2% increase while simulating at rated current. We attribute this slight difference non-inductive structure winding, where strong field generated space between HV effectively shields core.