Effect of the Stack in HTS Tapes Exposed to External Magnetic Field

Park, Myungjin; Choi, Myengseob; Hahn, Seungyong; Cha, Gueesoo; Lee, Ji-Kwang

doi:10.1109/tasc.2004.830429

Cited by 22 publications

(13 citation statements)

References 3 publications

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“…AC loss per cycle are all the same and are independent of magnetic field oscillation type and the cycle time. AC Loss of HTS wire under sinusoidal external magnetic fields ( 200 mT) like has been reported from many researchers [3], [4]. However, sinusoidal magnetic fields are not generated in the SMES system if it has no ripple magnetic fields which are generated by ripple currents.…”

Section: B Operating Loss and Ac Lossmentioning

confidence: 81%

AC Loss and Thermal Stability of HTS Model Coils for a 600 kJ SMES

Park

Kwak

Kim

et al. 2007

IEEE Trans. Appl. Supercond.

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A 600 kJ Superconducting Magnetic Energy Storage System (SMES) project with High Temperature Superconductor (HTS) started as a national project in Korea. The HTS model coils were designed and fabricated for a preliminary test prior to the creation of a full scale prototype. Single reinforced BSCCO-2223 wires were used for the model coils and the operating temperature was decided to be 20K. Even though an SMES is not an AC-powered device, time-varying currents during the charging and discharging periods lead to the generation of time-variation magnetic fields applied to the model coils and the generation of AC loss. In this paper, AC loss and the temperature distribution of model coils are analyzed and discussed.

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Section: B Operating Loss and Ac Lossmentioning

confidence: 81%

AC Loss and Thermal Stability of HTS Model Coils for a 600 kJ SMES

Park

Kwak

Kim

et al. 2007

IEEE Trans. Appl. Supercond.

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“…In the coil application, the tapes are arranged in several types of stacking configuration such as face-to-face, edge-to-edge, regular matrix and irregular Manuscript matrix type. In our previous study, we reported about the influence of the stacking number and the external magnetic field direction on the magnetization loss of face-to-face stacked conductors with several insulation thicknesses between tapes [4], [5]. In this paper, we research the effect of the stacking configurations mentioned above for magnetization loss in perpendicular magnetic fields.…”

Section: Introductionmentioning

confidence: 97%

“…The stacked tape has different AC loss characteristics from single tape because the screening currents in the adjacent tapes affect the local magnetic field [3]- [5]. In the coil application, the tapes are arranged in several types of stacking configuration such as face-to-face, edge-to-edge, regular matrix and irregular Manuscript matrix type.…”

Section: Introductionmentioning

confidence: 99%

Magnetization Loss and Shield Effect in Multi-Stacked Tapes With Various Stacking Configurations

Lee

Park

Lim

et al. 2006

IEEE Trans. Appl. Supercond.

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AC loss is one of the major topics in large AC power applications using high temperature superconductor such as power transformers, transmission cables and fault current limiters because it is closely related to operation efficiency. Multi-stacked tape conductors should be used to transport the large current in those power applications. A research of various arrangements of HTS tapes for multi-stacked tapes has been performed to increase the capacity of transport current in HTS power applications. In this paper, we studied magnetization loss and shield effect from several different arrangements of BSCCO tapes such as Face-to-Face type, regular matrix type (m 2) and irregular matrix type. The results show that the magnetization loss of the Face-to-Face arrangement was lower than those of the other matrix types for the same stacking numbers. We think that the result was due to the shield effect by demagnetization of adjacent HTS tapes which were located as face to face.

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“…Generally, a several number of HTS wires should be combined to be used because a single HTS wires is yet limited in current capacity so far. Although many researchers are being progressed like Roebel conductors, compact cables, and HTS cable in conduit conductors for large current, none of them has shown the brightness of the usefulness for large power applications [1,2]. Some of them was too expensive or too complicated to make, and others couldn't show clear reduction of AC loss.…”

Section: Introductionmentioning

confidence: 99%

Test result of striated HTS compact cables for low AC loss

Kim¹,

Kim²,

Lee³

2013

Progress in Superconductivity and Cryogenics

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Large AC loss from the second generation (2G) high temperature superconducting (HTS) wires has been one of the major bottlenecks in power applications with HTS materials. Moreover, the large power applications also require the large current capacity from the HTS wires, which makes them produce larger AC losses. In order to reduce the AC loss from the HTS conductors with large current capacity, an HTS compact cable with some striations on the superconducting layers has been proposed. In this paper, we prepared some sample HTS compact conductors with striations, and measured their magnetization loss from the external magnetic field. We also made some slits on the superconducting layer of the HTS wire by laser cutting to reduce the aspect ratio of the superconducting layers. It would make the low eddy current loss and magnetic decoupling. Finally, the magnetization losses of the sample HTS compact conductors were measured and analyzed.

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Effect of the Stack in HTS Tapes Exposed to External Magnetic Field

Cited by 22 publications

References 3 publications

AC Loss and Thermal Stability of HTS Model Coils for a 600 kJ SMES

AC Loss and Thermal Stability of HTS Model Coils for a 600 kJ SMES

Magnetization Loss and Shield Effect in Multi-Stacked Tapes With Various Stacking Configurations

Test result of striated HTS compact cables for low AC loss

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