变压器工况高温超导体交流损耗仿真研究

Simulation study on AC loss of HTS under AC magnetic field condition of transformer

基于Maxwell方程并将高温超导体的非线性E-J指数特性加载在模型中,利用H-formulation方法收敛快,易施加外部磁场为边界条件的特点,分析了背景磁场的幅值和方向对高温超导体交流损耗的影响。通过仿真自场下高温超导体的交流损耗并与Norris公式结果相比较,验证了该仿真模型的合理性和正确性,为实际高温超导变压器的设计提供参考。

This paper analyzed the influence of amplitude and direction of the background magnetic field on AC loss of high temperature superconductors,based on Maxwell equations and loading the nonlinearE-Jexponential characteristics of high temperature superconductors into the model and H-formulation with the characteristics of fast convergence and easy application of external magnetic field as boundary condition. We simulated AC loss of high temperature superconductor in self-field and compared with the results of Norris formulation to verify the rationality and correctness of the simulation model. It can provide a reference for the design of practical high temperature superconducting transformer.