Numerical study on the electromagnetic characteristics of multi-layer CORC cables

Abstract

Due to the high isotropy and low AC losses, the multi-layer conductor on Round Core (CORC) cable is a good candidate for high field magnets, such as central solenoid magnets in fusion. Considering the difficulty in experimental measurement, numerical model is an effective way to illustrate the electromagnetic characteristics of the multi-layer CORC cable and provide further insights into its working performance. In this work, A 3D finite element model based on H formulation is proposed to simulate a CORC cable with as many as 18 layers considering electromagnetic coupling. The validity of the model has been verified by experimental results. Based on the proposed model, the DC transport current distribution characteristics and charge-discharge loss characteristics of multi-layer CORC cables wound in the same and opposite winding directions are investigated respectively. This work can provide an important reference for the design of multi-layer CORC cables for high-current or high-field application.

A superconducting switch using induced current in the closed loop circuit

“…Superconducting magnets play a vital role in applications such as magnetic resonance imaging [1], motor winding [2], and nuclear fusion [3][4][5]. Superconducting magnets can be driven by an external power source continuously or operated in the persistent current mode [6,7].…”

Numerical study on the transport current distribution in the multi-layer CORC coil

“…Correspondingly, more superconducting tapes are wound into multi-layer structure to enhance the critical current of CORC coils. Due to the complex structure [38], it is rather challenging to build numerical model of a multilayer CORC coil, which can fast and conveniently provide insight into the working performance of the CORC coil.…”