| 基于"场-路耦合"分析的超导变压器绕组环流计算 |
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| 引用本文： | 李晓松,胡贵,陈乔夫.基于"场-路耦合"分析的超导变压器绕组环流计算[J].电气应用,2006,25(10):72-75. |
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| 作者姓名： | 李晓松 胡贵 陈乔夫 |
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| 作者单位： | 长沙理工大学电气与信息工程学院,410076;华中科技大学电气与电子工程学院,430074;株洲南车电机股份有限公司,412001;华中科技大学电气与电子工程学院,430074 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 由于超导材料的零电阻特性,绕组各支路间漏电抗微小的不平衡将会引起较大的环流,环流的存在使得磁场分布不均匀,进而影响交流损耗和临界电流。本文应用有限元软件ANSYS,采用“场-路耦合”的方法,计算了低压绕组五种不同情形的环流。研究表明,从减小环流和改善磁场分布考虑,圆筒式绕组较饼式绕组更适合需多根导线并绕的情况。
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| 关 键 词： | 超导变压器 绕组形式 场-路耦合 环流计算 |
| 修稿时间： | 2005年12月28 |
Calculation of Circulating Currents of HTS Power Transformer by Coupling Magnetic Field with Electric Circuit |
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| Li Xiaosong.Calculation of Circulating Currents of HTS Power Transformer by Coupling Magnetic Field with Electric Circuit[J].Electrotechnical Application,2006,25(10):72-75. |
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| Authors: | Li Xiaosong |
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| Affiliation: | Changsha University of Science and Technology |
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| Abstract: | In a HTS transformer a slight unbalance among branch inductances of the secondary windings may result in heavy circulating current among the branches of the secondary because of zero resistance of HTS tapes.As a result,it can in- crease AC losses and worsen the distribution of leakage magnetic filed.In this paper,the circulating current for five different configurations of the secondary windings is calculated by cou- pling magnetic field with electric circuit.It can be concluded that in view of improving distribution of the circulating current and the magnetic field the helical windings is superior to a pan- cake windings when a winding is wound in parallel with more than one tape. |
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| Keywords: | HTS transformer winding configurations coupling magnetic field with electric circuit calculation of circulating current |
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