• 제목/요약/키워드: pan-cake coil

검색결과 3건 처리시간 0.018초

Design and fabrication of race-track type field coil for the high temperature superconduction generator

  • Baik, S.K.;Jo, Y.S.;Ha, H.S.;Lee, E.Y.;Jeong, D.Y.;Kwon, Y.K.;Ryu, K.S.;Sohn, M.H.
    • 한국초전도학회:학술대회논문집
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    • 한국초전도학회 2000년도 High Temperature Superconductivity Vol.X
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    • pp.248-251
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    • 2000
  • The fabrication and characteristics of HTS race-track type field coil for generators was carried out. Field coils are composed of 3 pancake coils wound by 37-filamental Bi-2223/Ag-alloy tapes. The winding machine is horizontal type. The critical currents (I$_c$) of the superconducting tapes were measured with variation of bending strain and external magnetic fields. I$_c$ of both whole field coils and 3 pancake coils were measured as a function of temperature. At 77K under the self-field, I$_c$ of whole field coils was 12A, while in the case of middle pancake coil, I$_c$ was 15A. The distribution of magnetic field B was obtained, using 3-D FEM. Our simulation showed that maximums of B${\bot}$A in x-y plane were locally distributed in both the upper and the lower coils. In addition, the fabrication processes and the characteristics of field coil are described.

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3상 10kVA 더블 팬케익 코일형 고온초전도 변압기 특성시험 결과 (Test Results of a Three Phase 10㎸A HTS Transformer With Double Pan Cake Coils)

  • 이승욱;이희준;차귀수;이지광;최경달;류경우;한송엽
    • 대한전기학회논문지:전기기기및에너지변환시스템부문B
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    • 제52권3호
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    • pp.101-106
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    • 2003
  • The high temperature superconductor transformers gain interests from the industries. This paper described construction and test results of 10㎸A HTS transformer Three phase transformer with double pancake windings were constructed. To reduce the leakage magnetic field, secondary coil were placed between the two primary coils. BSCCO-2223 wire. silicon sheet steel core and FRP cryostats were used to construct the transformer. Three coils were stacked in one cryostat. Two double pancake coils were connected in series for the primary coil and one double pancake coil was used for the secondary coil. Total number of turns of the primary winding and the secondary winding were 112turns and 98urns, respectively, The rated voltages of each winding were 440/220V. The rated currents of each winding were 13.1/26.2A. After the tests of basic properties of the three phase HTS transformer using no-load test, short-circuit test and full-load test, continuous operation of 100 hours with pure resistive load has been carried out. Test results proved over-load capability and reliability of the HTS transformer.

자동차부품의 마이크로급 표면크랙 탐상을 위한 FEM 를 기반한 와전류 센서 디자인 및 적용 (Application and Design of Eddy Current based on FEM for NDE Inspection of Surface Cracks with Micro Class in Vehicular Parts)

  • 임광희;이슬기;김학준;송성진;우용득;나승우;황우채;이형호
    • 한국정밀공학회지
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    • 제32권6호
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    • pp.529-536
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    • 2015
  • A defect could be generated in bolts for a use of oil filters for the manufacturing process and then may affect to the safety and quality in bolts. Also, fine defects may be imbedded in oil filter system. So it is very important that such defects be investigated and screened during the multiple manufacturing processes. Therefore, in order effectively to evaluate the fine defects, the FEM simulations were performed to make characterization in the crack detection of the bolts and the parameters such as number of turns of the coil, the coil size, applied frequency were calculated based on the simulation results. Simulations were carried out for the defect signal of eddy current probe. Exciter and receiver were utilized. In this paper, the FEM simulations were performed in both bobbin-type and pancake-type probe, both probes were optimized under Eddy current FEM simulations and the results of calculation were discussed.