Linjie Zhou;Yihan Wang;Qi Yuan;Xiaowei Song;Liang Li;Qiuliang Wang
{"title":"AC Loss Calculation of High Temperature Superconducting Coils Based on a Surrogate Model","authors":"Linjie Zhou;Yihan Wang;Qi Yuan;Xiaowei Song;Liang Li;Qiuliang Wang","doi":"10.1109/TASC.2025.3561097","DOIUrl":null,"url":null,"abstract":"AC losses have a significant impact on the design and operation of superconducting power devices. Therefore, fast and accurate estimation of AC losses is essential. However, calculating AC losses in high-temperature superconducting (HTS) coils often requires considerable computational resources. To address this, a time-series surrogate model based on a convolutional neural network (CNN) is proposed. The model is trained using sample points <italic>X</i> (e.g., HTS coil parameters and current profiles) and corresponding AC loss responses <italic>Y</i> obtained from finite element analysis (FEA). It integrates a self-attention hybrid convolution module and a current change perception mechanism to extract deep temporal features, and employs an adaptive threshold to enhance open-set recognition and prediction robustness. The model's accuracy is validated against COMSOL simulation results, demonstrating that it significantly improves computational efficiency while maintaining high prediction accuracy.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"35 5","pages":"1-5"},"PeriodicalIF":1.7000,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Transactions on Applied Superconductivity","FirstCategoryId":"101","ListUrlMain":"https://ieeexplore.ieee.org/document/10966202/","RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
引用次数: 0
Abstract
AC losses have a significant impact on the design and operation of superconducting power devices. Therefore, fast and accurate estimation of AC losses is essential. However, calculating AC losses in high-temperature superconducting (HTS) coils often requires considerable computational resources. To address this, a time-series surrogate model based on a convolutional neural network (CNN) is proposed. The model is trained using sample points X (e.g., HTS coil parameters and current profiles) and corresponding AC loss responses Y obtained from finite element analysis (FEA). It integrates a self-attention hybrid convolution module and a current change perception mechanism to extract deep temporal features, and employs an adaptive threshold to enhance open-set recognition and prediction robustness. The model's accuracy is validated against COMSOL simulation results, demonstrating that it significantly improves computational efficiency while maintaining high prediction accuracy.
期刊介绍:
IEEE Transactions on Applied Superconductivity (TAS) contains articles on the applications of superconductivity and other relevant technology. Electronic applications include analog and digital circuits employing thin films and active devices such as Josephson junctions. Large scale applications include magnets for power applications such as motors and generators, for magnetic resonance, for accelerators, and cable applications such as power transmission.