High Temperature Superconducting AC Losses - BSCCO and ReBCO Tapes

<p dir="ltr">Experimental tests were carried out to measure the AC losses of ReBCO and BSCCO tapes at 77 K. The used experimental setup comprises a sinusoidal voltage source (Keysight AC6804B) connected to a step-down transformer, with the secondary connected to the HTS tapes. Voltage taps are soldered to both sides of the HTS tape sample. A cancellation coil is employed to align the tape’s voltage and current, thereby reducing errors in computing the active power. The voltage signal undergoes an 80-fold amplification stage in the Low Noise Amplifier (LNA) before being visualized and acquired by an oscilloscope. For each current step, a 5-period signal is acquired 20 times, from which an average 5-period signal is derived. Each measurement step is repeated five times to mitigate noise. From these tests, AC voltage-current (V-I) characteristics and total AC losses are experimentally determined. In addition to the cancelation coil method, the voltage was also measured using a Lock-in amplifier, using the current as a phase reference.</p><p dir="ltr">In these database it is provided the voltage-time and current-time curves and AC losses measurements. In addition, an Excel file with AC losses analytical models is provided to help characterise the HTS tapes' parameters under AC regime.</p><p dir="ltr">Information from the Manufacturer of the HTS 1^st gen. BSCCO and 2^nd gen. ReBCO Tapes:</p><table><tr><td><p dir="ltr"><b>Characteristic</b></p></td><td><p dir="ltr"><b>BSCCO </b><b>(1</b>^{<strong>st</strong>}<b> gen.)</b></p></td><td><p dir="ltr"><b>ReBCO </b><b>(2</b>^{<strong>nd</strong>}<b> gen.)</b></p></td><td><p dir="ltr"><b>ReBCO </b><b>(2</b>^{<strong>nd</strong>}<b> gen.)</b></p></td></tr><tr><td><p dir="ltr"><i>I</i>_<em>c</em> (77K) @ dc</p></td><td><p dir="ltr">160-180A</p></td><td><p dir="ltr">155-175A</p></td><td><p dir="ltr">83-85A</p></td></tr><tr><td><p dir="ltr"><i>n </i>(77K) @ dc</p></td><td><p>10-13</p></td><td><p>30-35</p></td><td><p>29-30</p></td></tr><tr><td><p dir="ltr"><i>B</i>_{<em>0 </em>}(77K) @ dc</p></td><td><p dir="ltr">0.1 - 0.14 T</p></td><td><p dir="ltr">0.1 - 0.14 T</p></td><td><p dir="ltr">0.1 - 0.14 T</p></td></tr><tr><td><p dir="ltr">Geometry</p></td><td><p dir="ltr">Elliptical</p></td><td><p dir="ltr">Thin strip</p></td><td><p dir="ltr">Thin strip</p></td></tr><tr><td><p dir="ltr"><i>w</i>_<em>sc</em> (<i>w</i>_<em>sc</em> = 2a)</p></td><td><p dir="ltr">3.5 mm</p></td><td><p dir="ltr">4.01 mm</p></td><td><p dir="ltr">2.04 mm</p></td></tr><tr><td><p dir="ltr"><i>h</i>_<em>sc</em> (<i>h</i>_<em>sc</em> = 2b)</p></td><td><p dir="ltr">0.12 mm</p></td><td><p dir="ltr">0.095 mm</p></td><td><p dir="ltr">0.095 mm</p></td></tr><tr><td><p dir="ltr"><i>l</i>_{<em>sc </em>}(length)</p></td><td><p dir="ltr">120 mm</p></td><td><p dir="ltr">100 mm</p></td><td><p dir="ltr">95 mm</p></td></tr><tr><td><p dir="ltr">Manufacturer</p></td><td><p dir="ltr">Nexans SuperConductors</p><p dir="ltr">BSCCO-2212 C01-207</p></td><td><p dir="ltr">SuperPower</p><p dir="ltr">SCS4050-AP</p></td><td><p dir="ltr">SuperPower</p><p dir="ltr">SCS2050-AP</p></td></tr></table><p><br></p><table><tr><td><p><br></p></td></tr></table><p dir="ltr">To use this data, please cite:</p><p dir="ltr">https://iopscience.iop.org/article/10.1088/1361-6668/ad1f7c/meta</p><p dir="ltr"><a href="https://doi.org/10.54499/2023.11458.PEX" target="_blank">https://doi.org/10.54499/2023.11458.PEX</a></p>