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Description
For models of HTS cables for large-current transfer applications, an accurate prediction of current distribution over the strands is important, as this forms the basis for many AC loss- and stability simulations. Especially in non-fully transposed multiple-strand cables, such as those of the CORC geometry, carrying a non-DC transport current, strand current distributions may be highly non-uniform. In this study, a current-distribution/AC-loss model of the electrical-network type is used to simulate current distributions, as well as the corresponding axial component of the cable’s magnetic flux time-derivative. Subsequently, this same axial flux-derivative signal is measured on a 0.6 m, 8-layer CORC sample using inductive pickup coils. The measurements and simulation show good correspondence, providing a validation tool for the current-distribution network model that is complementary to and independent from measuring the voltage over the cable. These results strengthen the use-case of these types of electrical-network models for calculating loss- and stability behavior of HTS current transmission cables of the CORC- or similar geometry.
| Submitters Country | Netherlands |
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| Are you a student? | Yes |
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