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An applicable calorimetric method for measuring AC losses of 2G HTS wire using optical FBG

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Abstract

We present a new calorimetric method for measuring alternative current (AC) losses of high-temperature superconducting (HTS) tapes by optical fiber Bragg grating (FBG), which is particularly well suited for the AC loss measurement of ReBCO wires, so-called the second generation (2G) HTS wires. Compared with conventional calorimetric methods, the suggested method is both free of electromagnetic disturbance, magnetic field, and fast as well as simple. Self-field AC losses are measured by the optical FBG method and the conventional lock-in-amplifier (LIA) technique, respectively. The results show that the measured AC loss is in good agreement with those measured by the electric method, thus the presented calorimetric method would be available for measuring the AC loss of 2G wire and is expected to be generalized for the measurement of AC loss or thermal performances of HTS bulk.

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Authors and Affiliations

  1. State Key Laboratory of New Energy Power System, North China Electric Power University, Beijing, 102206, China

    YinShun Wang

  2. Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing, 100190, China

    WeiWei Zhou

  3. Beijing Key Laboratory of High Voltage & Electromagnetic Compatibility, North China Electric Power University, Beijing, 102206, China

    JingShu Dai

Authors
  1. YinShun Wang
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  2. WeiWei Zhou
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  3. JingShu Dai
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Correspondence to YinShun Wang.

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Wang, Y., Zhou, W. & Dai, J. An applicable calorimetric method for measuring AC losses of 2G HTS wire using optical FBG. Sci. China Technol. Sci. 58, 545–550 (2015). https://doi.org/10.1007/s11431-014-5749-0

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  • DOI: https://doi.org/10.1007/s11431-014-5749-0

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