AC loss calculation in coated conductor coils with a large number of turns

Abstract

For superconducting coils with many turns, it is widely believed that the magnetic field from magnetization currents is negligible compared to the one generated by the whole coil. This article shows that this is not true for coils with a considerably large number of turns (up to thousands). We introduce a method to accurately calculate the AC loss in coils with virtually any number of turns that takes the magnetization currents into account. The current density and AC loss is analyzed for two windings made of coated conductor consisting of 32 pancake coils totaling 768 and 6400 turns, respectively.

12 pages, 6 figures; Accepted Manuscript after peer review; copyright held by Institute of Physics (IoP)

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Cited by in corpus (7)

• Electromagnetic modelling of superconductors with a smooth current-voltage relation: variational principle and coils from a few turns to large magnets
• Modeling of screening currents in coated conductor magnets containing up to 40000 turns
• Fast and accurate electromagnetic modeling of non-insulated and metal-insulated REBCO magnets
• Modelling of AC loss in coils made of thin tapes under DC bias current
• Coupling loss at the end connections of REBCO stacks: 2D modelling and measurement
• Real-time simulation of large-scale HTS systems: multi-scale and homogeneous models using T-A formulation
• T-A homogenized and multi-scale models with real-time simulation capabilities for large-scale HTS systems