Progress in Superconductivity and Cryogenics (한국초전도ㆍ저온공학회논문지)

The Korean Society of Superconductivity and Cryogenics (한국초전도저온학회)
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Cold electronics based 128 temperature sensor interface with 14 leads for testing of high Tc superconducting cable

  • Gour, Abhay Singh (Indian Institute of Technology) ;
  • Thadela, S. (Indian Institute of Technology) ;
  • Rao, V.V. (Indian Institute of Technology)
  • Received : 2017.12.28
  • Accepted : 2018.02.16
  • Published : 2018.03.31
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Abstract

High Temperature Superconducting (HTS) power cables are capable of transmitting bulk power without any loss compared to conventional copper cables. The major challenge in the design of such HTS cables is the high stresses (electro-thermal/electro-mechanical) developed at high voltages, high currents and cryogenic temperatures. The safe and reliable operation of HTS cables involves lots of instrumentation for monitoring, measurement, control and safe operation. In principle, a four probe method for resistance (RTD PT-100) is used for temperature measurements at various locations of HTS cable. The number of connecting leads required for this is four times that of the number of sensors. The present paper discusses a novel way of connecting 128 RTD sensors with the help of only 14 leads using a cold electronics based multiplexer board. LabVIEW 11.0 software was used for interfacing and displaying the readings of all the sensors on computer screen.

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References

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