Foil Conductor Model for Efficient Simulation of HTS Coils in Large Scale Applications

TL;DR

This paper introduces an extended foil conductor model for efficient simulation of large-scale HTS coils, improving computational speed by using homogenization techniques and a J-A-V formulation.

Contribution

The paper extends the foil conductor model to HTS coils and demonstrates the advantages of the J-A-V formulation over the traditional A-V approach.

Findings

J-A-V formulation offers better numerical performance.

Model accelerates simulations compared to detailed layer resolution.

Suitable for large-scale HTS coil simulations.

Abstract

Homogenization techniques are an appealing approach to reduce computational complexity in systems containing coils with large numbers of high temperature superconductor (HTS) tapes. Resolving all the coated conductor layers and turns in coils is often computationally prohibitive. In this paper, we extend the foil conductor model, well-known in normal conducting applications, to applications with insulated HTS coils. To enhance the numerical performance of the model, the conventional formulation based on A-V is extended to J-A-V. The model is verified to be suitable for simulations of superconductors and to accelerate the calculations compared to resolving all the individual layers. The performance of both the A-V and J-A-V formulated models is examined, and the J-A-V variant is concluded to be advantageous.