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HTS transformer windings design using distributive ratios for minimization of short circuit forces

Moradnouri, A ; Sharif University of Technology | 2019

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  1. Type of Document: Article
  2. DOI: 10.1007/s10948-018-4925-z
  3. Publisher: Springer New York LLC , 2019
  4. Abstract:
  5. High-temperature superconducting (HTS) transformers have a promising feature in reduction of total weight, total size, and the losses of large-scale distribution transformers. However, the lower leakage reactance of HTS transformers results in a higher short-circuit fault currents and electromagnetic forces. Therefore, optimization of short-circuit electromagnetic forces is one of the crucial aspects in the design of HTS transformers. In this paper, a novel analytical method is proposed for determination of optimum distributive ratios resulting in minimization of these forces for asymmetrical multi-segment windings of an HTS transformer. Employing these distributive ratios, radial and axial components of short-circuit electromagnetic forces in an HTS transformer are significantly reduced. Two- and three-dimensional (2D and 3D) finite element method (FEM) simulations are employed to verify the analytical method results. © 2018, Springer Science+Business Media, LLC, part of Springer Nature
  6. Keywords:
  7. 2D and 3D finite element method ; High-temperature superconducting (HTS) transformers ; Leakage flux ; Multi-segment winding ; Optimum distributive ratios ; Short circuit force ; Finite element method ; High temperature superconductors ; Scales (weighing instruments) ; Superconducting devices ; Timing circuits ; Winding ; 3-D finite element method ; High temperature superconducting transformers ; Multi-segment ; Short-circuit force ; Transformer windings
  8. Source: Journal of Superconductivity and Novel Magnetism ; Volume 32, Issue 2 , 2019 , Pages 151-158 ; 15571939 (ISSN)
  9. URL: https://link.springer.com/article/10.1007/s10948-018-4925-z