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In superconducting magnet energy storage system (SMES), critical current (Ic) of magnet is a key limiting factor affecting the efficiency of the power shifting process. Therefore, the optimization of Ic is an important consideration in SMES magnet design. Existing optimization methods are limited by the computational speed of superconducting properties, making them difficult to apply to large-scale magnets such as SMES magnets. This paper implements fast electromagnetic calculation of SMES magnets, and optimizes their Ic to obtain the optimal magnet parameters. A novel adaptive extended J-model (AE J-model) has been utilized for the first time to optimize superconducting properties. When an appropriate rising rate of transport current is chosen, AE J-model requires only 1 min to calculate a small-scale SMES magnet. Based on AE J-model, Ic of a large-scale SMES magnet of 1000 turns is significantly enhanced, and finding the optimal structural parameters of the magnet that maximize Ic takes less than one hour.

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Fast Electromagnetic Calculation and Optimization of Superconducting Energy Storage Magnets Based on Adaptive Extended Model

  • 会议论文

  • 发表日期：

    2026年

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  • Qingchuan Xu,
  • Honglei Li,
  • Lei Su,
  • Haoyang Tian

摘要

In superconducting magnet energy storage system (SMES), critical current (Ic) of magnet is a key limiting factor affecting the efficiency of the power shifting process. Therefore, the optimization of Ic is an important consideration in SMES magnet design. Existing optimization methods are limited by the computational speed of superconducting properties, making them difficult to apply to large-scale magnets such as SMES magnets. This paper implements fast electromagnetic calculation of SMES magnets, and optimizes their Ic to obtain the optimal magnet parameters. A novel adaptive extended J-model (AE J-model) has been utilized for the first time to optimize superconducting properties. When an appropriate rising rate of transport current is chosen, AE J-model requires only 1 min to calculate a small-scale SMES magnet. Based on AE J-model, Ic of a large-scale SMES magnet of 1000 turns is significantly enhanced, and finding the optimal structural parameters of the magnet that maximize Ic takes less than one hour.