Development of a 7.5 kW YBCO superconducting synchronous motor

M. Iwakuma; Y. Hase; T. Satou; A. Tomioka; M. Konno; Y. Iijima; T. Saitoh; Y. Yamada; T. Izumi; Y. Shiohara

doi:10.1109/TASC.2008.920564

Development of a 7.5 kW YBCO superconducting synchronous motor

M. Iwakuma, Y. Hase, T. Satou, A. Tomioka, M. Konno, Y. Iijima, T. Saitoh, Y. Yamada, T. Izumi, Y. Shiohara

Applied Energy Engineering

Research output: Contribution to journal › Article › peer-review

7 Citations (Scopus)

Abstract

We are developing a 7.5 kW-360 rpm synchronous motor with a superconducting rotor. The rotor is 6-pole type and has no iron core. The armature winding is wound with copper. The designed operating temperature is 40 K. It will be cooled by forced-flowed helium gas. We have finished the winding of the first superconducting field coil with YBCO superconducting tapes fabricated by IBAD-PLD method. It is a 62-layer solenoidal coil. The total length of YBCO tape is 400 m. The magnetic field in the field winding is about 0.4 T at maximum and that in the gap is 0.2 T. We cooled it down to 20 K by G-M type cryocooler and investigate the transport properties in advance of the winding of the other field coils. We verified the stable operation up to 100 A at 40 K against the rated current of 50 A. In addition we prepared the cryogenic rotor system and installed 6 pieces of dummy copper coils instead of superconducting coils. We cooled it down to 30 K by forced-flowing helium gas and tested it by rotating up to 360 rpm. We verified the satisfactory good mechanical and thermal operation.

Original language	English
Article number	4517326
Pages (from-to)	689-692
Number of pages	4
Journal	IEEE Transactions on Applied Superconductivity
Volume	18
Issue number	2
DOIs	https://doi.org/10.1109/TASC.2008.920564
Publication status	Published - Jun 2008

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

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10.1109/TASC.2008.920564

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@article{b577adb50cdf43f0aa53626b56cdfcbf,

title = "Development of a 7.5 kW YBCO superconducting synchronous motor",

abstract = "We are developing a 7.5 kW-360 rpm synchronous motor with a superconducting rotor. The rotor is 6-pole type and has no iron core. The armature winding is wound with copper. The designed operating temperature is 40 K. It will be cooled by forced-flowed helium gas. We have finished the winding of the first superconducting field coil with YBCO superconducting tapes fabricated by IBAD-PLD method. It is a 62-layer solenoidal coil. The total length of YBCO tape is 400 m. The magnetic field in the field winding is about 0.4 T at maximum and that in the gap is 0.2 T. We cooled it down to 20 K by G-M type cryocooler and investigate the transport properties in advance of the winding of the other field coils. We verified the stable operation up to 100 A at 40 K against the rated current of 50 A. In addition we prepared the cryogenic rotor system and installed 6 pieces of dummy copper coils instead of superconducting coils. We cooled it down to 30 K by forced-flowing helium gas and tested it by rotating up to 360 rpm. We verified the satisfactory good mechanical and thermal operation.",

author = "M. Iwakuma and Y. Hase and T. Satou and A. Tomioka and M. Konno and Y. Iijima and T. Saitoh and Y. Yamada and T. Izumi and Y. Shiohara",

note = "Funding Information: Manuscript received August 28, 2007. This work was supported in part by the New Energy and Industrial Technology Development Organization (NEDO) as Collaborative Research and Development of Fundamental Technologies for Superconductivity Applications. M. Iwakuma is with the Research Institute of Superconductor Science and Systems, Kyushu University, Fukuoka 819-0395, Japan (e-mail: iwakuma@sc. kyushu-u.ac.jp). N. Hase and T. Satou are with Japan Motor and Generator Company Ltd., Tokyo 101-0054, Japan. A. Tomioka and M. Konno are with Fuji Electric Systems Company Ltd., Tokyo 141-0032, Japan. Y. Iijima and T. Saitoh are with Fujikura Ltd., Tokyo 135-8512, Japan. Y. Yamada is with the Nagoya Coated Conductor Center, Superconductivity Research Laboratory, Nagoya 456-8587, Japan. T. Izumi and Y. Shiohara are with Superconductivity Research Laboratory, Tokyo 135-0062, Japan. Color versions of one or more of the figures in this paper are available online at http://ieeexplore.ieee.org. Digital Object Identifier 10.1109/TASC.2008.920564",

year = "2008",

month = jun,

doi = "10.1109/TASC.2008.920564",

language = "English",

volume = "18",

pages = "689--692",

journal = "IEEE Transactions on Applied Superconductivity",

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T1 - Development of a 7.5 kW YBCO superconducting synchronous motor

AU - Iwakuma, M.

AU - Hase, Y.

AU - Satou, T.

AU - Tomioka, A.

AU - Konno, M.

AU - Iijima, Y.

AU - Saitoh, T.

AU - Yamada, Y.

AU - Izumi, T.

AU - Shiohara, Y.

N1 - Funding Information: Manuscript received August 28, 2007. This work was supported in part by the New Energy and Industrial Technology Development Organization (NEDO) as Collaborative Research and Development of Fundamental Technologies for Superconductivity Applications. M. Iwakuma is with the Research Institute of Superconductor Science and Systems, Kyushu University, Fukuoka 819-0395, Japan (e-mail: iwakuma@sc. kyushu-u.ac.jp). N. Hase and T. Satou are with Japan Motor and Generator Company Ltd., Tokyo 101-0054, Japan. A. Tomioka and M. Konno are with Fuji Electric Systems Company Ltd., Tokyo 141-0032, Japan. Y. Iijima and T. Saitoh are with Fujikura Ltd., Tokyo 135-8512, Japan. Y. Yamada is with the Nagoya Coated Conductor Center, Superconductivity Research Laboratory, Nagoya 456-8587, Japan. T. Izumi and Y. Shiohara are with Superconductivity Research Laboratory, Tokyo 135-0062, Japan. Color versions of one or more of the figures in this paper are available online at http://ieeexplore.ieee.org. Digital Object Identifier 10.1109/TASC.2008.920564

PY - 2008/6

Y1 - 2008/6

N2 - We are developing a 7.5 kW-360 rpm synchronous motor with a superconducting rotor. The rotor is 6-pole type and has no iron core. The armature winding is wound with copper. The designed operating temperature is 40 K. It will be cooled by forced-flowed helium gas. We have finished the winding of the first superconducting field coil with YBCO superconducting tapes fabricated by IBAD-PLD method. It is a 62-layer solenoidal coil. The total length of YBCO tape is 400 m. The magnetic field in the field winding is about 0.4 T at maximum and that in the gap is 0.2 T. We cooled it down to 20 K by G-M type cryocooler and investigate the transport properties in advance of the winding of the other field coils. We verified the stable operation up to 100 A at 40 K against the rated current of 50 A. In addition we prepared the cryogenic rotor system and installed 6 pieces of dummy copper coils instead of superconducting coils. We cooled it down to 30 K by forced-flowing helium gas and tested it by rotating up to 360 rpm. We verified the satisfactory good mechanical and thermal operation.

AB - We are developing a 7.5 kW-360 rpm synchronous motor with a superconducting rotor. The rotor is 6-pole type and has no iron core. The armature winding is wound with copper. The designed operating temperature is 40 K. It will be cooled by forced-flowed helium gas. We have finished the winding of the first superconducting field coil with YBCO superconducting tapes fabricated by IBAD-PLD method. It is a 62-layer solenoidal coil. The total length of YBCO tape is 400 m. The magnetic field in the field winding is about 0.4 T at maximum and that in the gap is 0.2 T. We cooled it down to 20 K by G-M type cryocooler and investigate the transport properties in advance of the winding of the other field coils. We verified the stable operation up to 100 A at 40 K against the rated current of 50 A. In addition we prepared the cryogenic rotor system and installed 6 pieces of dummy copper coils instead of superconducting coils. We cooled it down to 30 K by forced-flowing helium gas and tested it by rotating up to 360 rpm. We verified the satisfactory good mechanical and thermal operation.

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JO - IEEE Transactions on Applied Superconductivity

JF - IEEE Transactions on Applied Superconductivity

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Development of a 7.5 kW YBCO superconducting synchronous motor

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