Influence of the multilayer HTS-cable conductor design on the current distribution

Sytnikov, V.E.; Dolgosheev, P.I.; Svalov, G.G.; Polyakova, N.V.; Belij, D.I.

doi:10.1016/s0921-4534(98)00497-3

Cited by 30 publications

(14 citation statements)

References 4 publications

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“…[20,26,27], but the real cause of the behavior was not understood. Proximity-effect will affect the work capacity and operation loss of a superconducting power device.…”

Section: Discussionmentioning

confidence: 99%

“…The total inductance of each layer can be controlled by manipulating the winding angles of the six layers. Most researchers believe that uniform current distribution could be gained by adjusting these winding angles [15,20,23,25].…”

Section: Sample Specificationsmentioning

confidence: 99%

“…In designing a multilayer HTS cable, people have tended to focus on balancing the inductances of the layers for a uniform current distribution among them and reducing the ac loss of the cable as the resistance of a superconductor is zero [19][20][21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

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A nontrivial factor in determining current distribution in an ac HTS cable-proximity effect

Xin

Gong

Zhang

2010

Sci. China Technol. Sci.

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A superconductor has zero resistance at the superconducting state. This unique property creates many exceptional phenomena, of which some are known and the others are not. Our experiments with multilayer high temperature superconductor (HTS) cable samples revealed a new phenomenon that alternating current had a tendency to flow in the inner and outer layers of the cables. We attribute the cause of this phenomenon to the electromagnetic interaction in an infinite electrical conductivity medium and term it "super-proximity-effect". This effect will greatly affect the performance of a multilayer superconducting cable and other superconducting devices which are involved with alternating current transportation. HTS cables, proximity-effect, superconductivity, electromagnetic interaction Citation:Xin Y, Gong W Z, Zhang J Y. A nontrivial factor in determining current distribution in an ac HTS cable-proximity effect. Sci China Tech Sci, 2010, 53: 922−928,

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“…[20,26,27], but the real cause of the behavior was not understood. Proximity-effect will affect the work capacity and operation loss of a superconducting power device.…”

Section: Discussionmentioning

confidence: 99%

Section: Sample Specificationsmentioning

confidence: 99%

See 1 more Smart Citation

A nontrivial factor in determining current distribution in an ac HTS cable-proximity effect

Xin

Gong

Zhang

2010

Sci. China Technol. Sci.

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“…Main design approaches that were used in the present cable design are described in [1]- [3]. The main task in the multilayer cables design is to achieve the uniform current distribution among the layers to reach the maximum use of the current carrying capacity of the superconducting tapes.…”

Section: Current Carrying Conductor Designmentioning

confidence: 99%

The current test results for two models of HTS cables on CASAT project

Sytnikov

Dolgosheev

Soloviev

et al. 2003

IEEE Trans. Appl. Supercond.

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Two models of HTS power cables were made and tested. The cable of Nordic Superconductor Technology (NST, Denmark) tape has 4 layers and length of 1 m, and the cable of Vacuumschmelzc (VAC, Germany) tape has 6 layers and length of 5 m. The test of the cables was performed at currents up to 6 kA (AC) and 10 kA (DC). Temperature was 78 K, uniform along the models' length. The critical current was more than 10 kA for 6 layers cable at 78 K. Main attention was paid for current distribution study in the cable models. Measurements of the current distribution between layers showed uniform current distribution and high level of superconducting tapes current currying capacity utilization. The comparison of the experimental and theoretical results showed reasonable coincidence. The tests will be continued at a various temperatures up to 100 K.Index Terms-High temperature superconductors, superconducting power cables.

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“…With the equivalent circuit model, the current distribution in HTS cable can be uniformized by adjusting the winding angle or spiral pitch so as to reduce AC loss [7]. When the inductance is constant in any layer, the current in this layer will be equal.…”

Section: Introductionmentioning

confidence: 99%