Numerical Modelling for AC Loss of the Second Generation HTS Tapes Under Alternating External Magnetic Fields Using the Finite Element Method ‎

Abstract

Superconductivity  is  one  of  the  most  advanced  technologies  to  use  in  technical  applications  especially  in
electrical  engineering  applications.  This  technology  is  of  great  interest  in  R&D  stage  to  fabricate  electrical
power  arraratus  because  of  promising  features  such  as  higher  efficiency,  lower  loss,  better  reliability,  smaller
size and compact assembly compared with conventional electrical components. The most important properties of
high temperature superconducting  (HTS) tapes  are large current  density, high  power density and  very low  AC
loss. Yttrium-based second generation HTS tapes have got 100 times higher current density and 20 times higher
price  compared  with  conventional  copper  wires.  The  most  important  limitation  on  application  of
superconducting  technology  in  power  applications  is  AC  loss  of  the  HTS  tapes.  Many  methods  have  been
developed during last decay in order to measure, estimate and calculate the AC loss of the HTS wires. One of the
low-cost,  fast,  and  precise  approaches  is  numerical  modelling  methods.  In  this  paper,  a  numerical  model  for
yttrium-based  second  generation  HTS  tapes  has  been  developed  in  order  to  calculate  AC  loss  in  transport
current  mode  and  under  external magnetic  fields  using  the  H-formaulation  finite  element  method.  The
dependency of the current density of tape to magnetic field has been considerd in the model.  

Keywords

References

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History

  • Receive Date: 15 October 2017
  • Revise Date: 25 February 2019
  • Accept Date: 19 September 2018
  • Publish Date: 22 October 2016

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