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수치해석을 이용한 BSCCO 적층 선재들에 교류 통전시 발생하는 손실 계산
임형우(Hyoungwoo Lim),한병욱(Byungwook Han),차귀수(Gueesoo Cha),이희준(Heejoon Lee) 대한전기학회 2007 대한전기학회 학술대회 논문집 Vol.2007 No.10
AC transport current losses is an important factor in the development of superconducting tapes and superconducting power applications. In this paper we compared measurement, calculation and Norris equation of AC transport current loss in BSCCO single and multi stacked wire. And present a distribution flux density and current density in the HTS single wire and multi stacked wire. The result of Measurement and calculation of Ac transport current loss show that the same. And show that HTS characteristic of inside HTS wire.
수치해석을 이용한 BSCCO 적층 선재들의 외부자장 변화에 따른 DC 통전 특성 계산
임형우(Hyoungwoo Lim),강명훈(Myunghun Kang),차귀수(Gueesoo Cha),이희준(Heejoon Lee) 대한전기학회 2007 대한전기학회 학술대회 논문집 Vol.2007 No.10
This paper has presented the numerical calculation of fundamental characteristics of the HTS wire by using commercial software. Numerical calculation of the HTS wire's characteristics is able to reduce the time and effort which need to be exerted to obtain those values experimentally. Results of numerical calculation, such as, critical current of the single and the multi-stacked wire under external magnetic field, were compared with that of experimental results.
1세대 선재와 2세대 선재의 혼합 적층시 발생하는 전송전류 손실 특성
임형우(Hyoungwoo Lim),차귀수(Gueesoo Cha),이지광(Jikwang Lee),이희준(Heejoon Lee) 대한전기학회 2006 대한전기학회 학술대회 논문집 Vol.2006 No.7
Reduce AC loss is very important in superconductor power machine. And HTS power application are needed an increment of current capacity. in this paper estimate AC loss effect and increase of current according tocomposition stack with 1G wire and 2G wire by measurement. A Method of composition stack are YBCO-BSCCO, YBCO-BSCCO-BSCCO-YBCO and BS CCO-YBCO-YBCO-BSCCO. also, test result compared analytic equation by Norries
고온초전도 혼합적층선재의 외부자장 변화에 따른 손실 특성
임형우(Hyoungwoo Lim),이동민(Dongmin Lee),윤기현(Kihyun Yun),차귀수(Gueesoo Cha),이희준(Heejoon Lee) 대한전기학회 2006 대한전기학회 학술대회 논문집 Vol.2006 No.10
AC loss on variation of external magnetic field is a very important factor in development of power applications. In this paper, we measured and compared AC loss of hybrid-multi stacked wire made of the combination of 1G wires and 2G wires and uniform-multi-stacked wire made of one type of wires, 1G wires or 2G wires. Measurement was performed using by the linked-picked coil method. As results, as the number of wires increase, AC loss per unit volume of both stacked wires in low external magnetic field is reduced. Also AC loss of 2G stacked wire is higher than that of 1G wire. AC loss per unit length of 2G stacked wire is less than that of 1G stacked wire. And AC loss of hybrid- multi stacked wire made of the combination of 1G wires and 2G wires was between uniform-multi- stacked wire made of 1G wires and 2G wires.
적층 배열형상에 따른 BSCCO 적층선재의 자호손실 특성 수치해석 및 측정
朴明陳(Myungjin Park),林炯佑(Hyoungwoo Lim),李光淵(Kwangyoun Lee),車貴守(Gueesoo Cha),李志光(Jikwang Lee) 대한전기학회 2006 전기학회논문지 B Vol.55 No.2
AC loss is one of the main research area in AC power application using high temperature superconductor(HTS), such as HTS transformer, HTS current limiter and HTS cable, because it is closely related to efficiency, economic estimation and design of power device. A lot of research for various arrangements of HTS tapes have been performed to increase a capacity of transport current because single HTS tape can not satisfy the demanded current capacity in HTS power application. In this paper, we studied magnetization loss by different several arrangements of BSCCO tapes such as Edge- to-Edge type, Face-to-Face type and Matrix type through numerical analysis by 2D-FEM and measurement. As a result, we got the result that the magnetization loss of Face-to-Face type arrangements was lower than those of other arrangement types under the conditions of the same stacking number. We think that the result was due to shield effect by demagnetization of adjacent HTS tapes which are located face to face.