Investigation of Demagnetization in HTS Stacked Tapes Implemented in Electric Machines as a Result of Crossed Magnetic Field

M. Baghdadi, H. S. Ruiz, J. F. Fagnard, Min Zhang, W. Wang, T. A. Coombs

Research output: Contribution to conferencePaperpeer-review

32 Citations (SciVal)


This paper investigates the practical effectiveness of employing superconducting stacked tapes to superconducting electric machinery. The use of superconducting bulks in various practical applications has been addressed extensively in the literature. However, in practice, dramatic decrease in magnetization would occur on superconducting bulks due to the crossed field effect. In our study, we employed the superconducting stacked tapes in a synchronous superconducting motor, which was designed and fabricated in our laboratory, aiming to lessen demagnetization due to crossed field effect in comparison with superconducting bulks. Applying the transverse AC field, the effects of frequency, amplitude, and number of cycles of the transverse magnetic field are discussed. Furthermore, a stack of 16 layers of superconducting tapes is modelled and the consequences of applying the crossed magnetic field on the sample are evaluated. The confrontation between experiments and simulation allows us to thoroughly understand the crossed field effects on stacked tapes. At the end, a preventive treatment, based on the shielding characteristic of superconductor and materials with high permeability, i.e. $mu$-metal and metallic glass, is suggested. On the other hand, the shielding feature of aforementioned materials will hinder the penetration of magnetic field and, consequently, reduction of the demagnetization will be attained.
Original languageEnglish
Publication statusPublished - 24 Nov 2014
EventThe 2014 Applied Superconductivity Conference - Charlotte, NC, USA, USA United States
Duration: 10 Aug 201415 Aug 2014


ConferenceThe 2014 Applied Superconductivity Conference
Country/TerritoryUSA United States
CityCharlotte, NC, USA


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