超导变压器YBCO线圈轴向错位对交流损耗影响  

Influence of axial misalignment of YBCO coil for superconducting transformer on AC loss

作　　者：王赛 李震梅[1] 吴昊 狄晓栋 李贞艳 韩美仪 Wang Sai;Li Zhenmei;Wu Hao;Di Xiaodong;Li Zhenyan;Han Meiyi(School of Electrical and Electronic Engineering,Shandong University of Technology,Zibo 255049,China)

机构地区：[1]山东理工大学电气与电子工程学院,淄博255049

出　　处：《低温与超导》2022年第2期36-41,共6页Cryogenics and Superconductivity

基　　金：山东省自然科学基金(ZR2019QEE018)资助。

摘　　要：为了研究超导变压器YBCO线圈轴向错位对交流损耗的影响,基于H公式法对超导线圈使用中会出现的两种轴向错位情况进行了仿真,并与无轴向错位的线圈进行对比分析。结果表明,在50 Hz的激励电流下,当施加的电流小于0.75I_(c0),倾斜错位和无序错位会导致交流损耗增加。而当激励电流大于0.75I_(c0)时,轴向错位线圈产生的交流损耗小于完美缠绕线圈。在外加交变磁场下,轴向错位线圈的交流损耗始终大于完美缠绕线圈。随着磁场幅值的增大,轴向错位线圈与完美缠绕线圈的交流损耗偏差逐渐缩小并趋于稳定。In order to study the influence of axial misalignment of YBCO coil of superconducting transformer on AC loss, two kinds of axial misalignment of superconducting coils in use were simulated based on the H formula method, and the coils without axial misalignment were compared and analyzed. The simulation results show that when the frequency of the excitation current is 50 Hz, the applied current is less than 0.75I_(c0), and the inclined dislocation and disordered dislocation will increase the AC loss. When the excitation current is greater than 0.75I_(c0), the AC loss of the axial dislocation coil is less than that of the ideal winding coil. If the alternating magnetic field is applied, the AC loss of the axially misaligned coil is always greater than that of the ideal winding coil. With the increase of magnetic field amplitude, the AC loss deviation between axial dislocation coil and ideal winding coil gradually decreases and tends to be stable.

关 键 词：交流损耗 轴向错位 超导线圈 超导变压器 

分 类 号：TM26[一般工业技术—材料科学与工程]