Experimental investigation on frequency-dependent critical current of HTS tapes  

作　　者：Changhui DAI Yinshun WANG Xiaojie ZHANG Weijie ZHAO 

机构地区：[1]State Key Laboratory for Alternate Electrical Power System withRenewable Energy Sources, Beijing 102206, China [2]Key Laboratory of HV and EMC Beijing, Beijing 102206, China [3]North China Electric Power University, Beijing 102206, China

出　　处：《Frontiers of Electrical and Electronic Engineering in China》2012年第4期386-390,共5页中国电气与电子工程前沿（英文版）

基　　金：This work was supported in part by the National Natural Science Foundation of China （Grant No. 51077051）.

摘　　要：Based on characteristics of alternating current （AC） critical current of high temperature superconducting （HTS） tapes on the frequency, this paper focuses on AC voltage-current （U-I） behaviors of two kinds of high temperature superconducting tapes, by which BSCCO and YBCO carrying different frequency AC currents are tested in liquid nitrogen temperature of 77 K. It is shown that the AC U-I characteristic curves of different tapes consist of two parts, that is, the resistive part and the hysteresis part. Additionally, the n values of the two parts and the relationship between AC critical current and frequency are obtained through experiments. The experimental results agree with calculated ones well, which is useful for the application of HTS tapes to power technology.Based on characteristics of alternating current （AC） critical current of high temperature superconducting （HTS） tapes on the frequency, this paper focuses on AC voltage-current （U-I） behaviors of two kinds of high temperature superconducting tapes, by which BSCCO and YBCO carrying different frequency AC currents are tested in liquid nitrogen temperature of 77 K. It is shown that the AC U-I characteristic curves of different tapes consist of two parts, that is, the resistive part and the hysteresis part. Additionally, the n values of the two parts and the relationship between AC critical current and frequency are obtained through experiments. The experimental results agree with calculated ones well, which is useful for the application of HTS tapes to power technology.

关 键 词：high temperature superconducting （HTS）tape alternating current （AC） critical current n value frequency AC voltage-current （U-I） behavior four-probetechnique 

分 类 号：TM26[一般工业技术—材料科学与工程] TU528.01[电气工程—电工理论与新技术]