Simulation of Stacks of High Temperature Superconducting Coated Conductors Magnetized by Pulsed Field Magnetization Using Controlled Magnetic Density Distribution Coils

摘要

High temperature superconducting (HTS) stacks of coated conductors (CCs) canwork as strong trapped field magnets (TFMs) and show potential in electricalapplications. Pulsed field magnetization (PFM) is a practical method tomagnetize such TFMs, but due to heat generation during the dynamic process, itcannot achieve a trapped field as high as field cooling can. In this work, weconstruct a 2D electromagnetic-thermal coupled model to simulate stacks of HTSCCs with realistic laminated structures magnetized by PFM. The model considerstemperature and anisotropic magnetic field dependent Jc of HTS and othertemperature dependent thermal and electrical material properties. Based on themodel, a configuration of controlled magnetic density distribution coils issuggested to improve the trapped field compared to that obtained by ordinarysolenoids.