| 无绝缘高温超导双饼线圈的瞬态电热特性分析 |
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| 引用本文： | 王康帅,秦朗,戴银明,王磊,牛超群,王耀辉,齐洪峰.无绝缘高温超导双饼线圈的瞬态电热特性分析[J].低温与超导,2020(3):30-34. |
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| 作者姓名： | 王康帅 秦朗 戴银明 王磊 牛超群 王耀辉 齐洪峰 |
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| 作者单位： | 中国科学院电工研究所;中国科学院大学;中车工业研究院有限公司 |
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| 基金项目： | 国家重点研发计划(2018YFF0109401);国家自然科学基金(51807191、51777205和11745005);北京市自然科学基金(3184061)资助。 |
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| 摘 要： | 无绝缘高温超导线圈具有良好的电热稳定性和机械紧凑性,但其充电过程中却有明显的磁场延迟现象。为详细了解无绝缘高温超导线圈励磁过程的瞬态特性,建立了无绝缘高温超导线圈的同轴圆环等效电路模型。通过绕制一个670匝的无绝缘高温超导双饼线圈,在液氮温度下进行不同充电速率的励磁实验,初步验证了等效电路模型的正确性。基于该模型,针对线圈励磁过程的充电和恒流阶段,仿真得到了线圈各匝的径向电流分布规律和电热损耗特性。
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| 关 键 词： | 高温超导 瞬态特性 n值模型 电流分布 |
Transient electrothermal characteristics of no-insulation high temperature superconducting double-cake coil |
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| Wang Kangshuai,Qin Lang,Dai Yinming,Wang Lei,Niu Chaoqun,Wang Yaohui,Qi Hongfeng.Transient electrothermal characteristics of no-insulation high temperature superconducting double-cake coil[J].Cryogenics and Superconductivity,2020(3):30-34. |
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| Authors: | Wang Kangshuai Qin Lang Dai Yinming Wang Lei Niu Chaoqun Wang Yaohui Qi Hongfeng |
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| Institution: | (Institute of Electrical Engineering,Chinese Academy of Sciences,Beijing 100190,China;University of Chinese Academy of Sciences,Beijing 100049,China;CRRC Institute,Beijing 100070,China) |
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| Abstract: | Magnetic field delay is the principal drawback for no-insulation high temperature superconducting coil despite of its good electrothermal stability and mechanical compactness in constructing high field superconducting magnet.To understand the transient characteristics of the no-insulation high temperature superconducting coil during energizing,a circuit model with concentric current circle in series was established.Coil charging performances were simulated and compared with test results on a 670-turn double pancake coil at liquid nitrogen temperature.Based on this model,the radial shunt current distributions inside the coil were simulated and joule heating,index losses for two charging rates were also calculated and presented in this paper. |
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| Keywords: | High temperature superconductivity Transient characteristics n-value model Current distribution |
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