Detailed simulation can play a fundamental role in the design, manufacture, and operation of high-field magnets. This study introduces a new equivalent circuit simulation method for the no-insulation (NI) superconducting magnet. The refined circuit model (RCM) can describe the current distribution inside the REBa₂Cu₃O_7-δ (RE, rare earth elements) tapes in the equivalent circuit model. A single turn of REBCO tape was divided in both the width and length directions to achieve better results. A simulation model for a NI REBCO insert magnet was established through the RCM. Simulation results show that the screen current starts to saturate within 500 s during the excitation of the HTS magnet. The refined circuit model can help to make a more detailed mechanical analysis of the REBCO magnets. It can also guide the excitation of the HTS magnet and screen current reduction through real-time simulation.

详细的模拟可以在高场磁铁的设计、制造和操作中发挥重要作用。本研究介绍了一种新的非绝缘 (NI) 超导磁体等效电路仿真方法。精细电路模型 (RCM) 可以描述 REBa ₂ Cu ₃ O _{7- δ}内部的电流分布 （RE，稀土元素）磁带在等效电路模型中。将单圈 REBCO 胶带在宽度和长度方向分开以获得更好的效果。通过RCM建立了NI REBCO插入磁铁的仿真模型。仿真结果表明，在高温超导磁体的励磁过程中，屏蔽电流在 500 s 内开始饱和。完善的电路模型有助于对 REBCO 磁体进行更详细的机械分析。它还可以通过实时仿真来指导高温超导磁体的励磁和屏电流的降低。