Improved Poynting's Vector Method: AC Loss Measurement of HTS Tapes Formed into a Short Straight or a Solenoidal Coil

Sumiyoshi, F.; Kawagoe, A.; Haeyama, Y.; Sakuda, H.; Mukai, Manabu; Iwakuma, Masataka; Izumi, T.; Shiratsuchi, Yu

doi:10.1016/j.phpro.2012.06.206

Cited by 1 publication

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“…Therefore, the measurement area consists of not only the inner and outer surfaces but also the top and bottom surfaces of the sample coil, as shown by Fig. 1. In the system of [2]- [4], measurements were not carried out so that measuring sensors were not mounted on the top and bottom surfaces, measuring sensors are not mounted on these surfaces.…”

Section: Principle Of Measuring Ac Losses Of Superconducting Coilsmentioning

confidence: 99%

“…As a system for measuring electromagnetic properties of superconducting wires or tapes under simultaneous sweep of transport currents and external magnetic field, the system using Poynting's vector method (hereafter called PVM) has been proposed [2]- [4]. In this system, the area of measurement is limited to the center of a solenoidal coil sample with a sufficiently long length to maintain uniformity of electromagnetic fields.…”

Section: Introductionmentioning

confidence: 99%

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A Measurement Method of AC Losses in Superconducting Coils Using Poynting's Vector Method

Kawagoe¹,

Higuchi²,

Matsufuji³

2014

IEEE Trans. Appl. Supercond.

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A new measurement method to determine ac losses in superconducting coils has been proposed, and its validity confirmed experimentally. In this method, the ac losses in the coil can be obtained from measured Poynting's vectors around the coil windings. The Poynting's vectors can be obtained by local magnetic fields and electric fields around the coil. Local magnetic fields and electric fields are measured by pick-up coils and potential leads, which are mounted around the sample coil. These pick-up coil and potential lead pairs are arranged on the inner side, outer side, top, and bottom of the coil windings to cover the entire coil windings. This measurement method has the benefit that ac losses in a coil in a superconducting coil system consisting of multiple coils can be measured. Not only ac losses in the coils but also information on local electromagnetic phenomena in the coils can be obtained from profiles of the Poynting's vectors. In this paper, the details of the measuring method are described, and experiments using a coil wound with Bi-2223 multifilamentary tapes were carried out in liquid nitrogen to confirm the validity of the measurement method.

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Section: Principle Of Measuring Ac Losses Of Superconducting Coilsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Measurement Method of AC Losses in Superconducting Coils Using Poynting's Vector Method

Kawagoe¹,

Higuchi²,

Matsufuji³

2014

IEEE Trans. Appl. Supercond.

Self Cite

View full text Add to dashboard Cite

show abstract

Improved Poynting's Vector Method: AC Loss Measurement of HTS Tapes Formed into a Short Straight or a Solenoidal Coil

Cited by 1 publication

References 6 publications

A Measurement Method of AC Losses in Superconducting Coils Using Poynting's Vector Method

A Measurement Method of AC Losses in Superconducting Coils Using Poynting's Vector Method

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