Fabrication and evaluation of superconducting bearing module for 10 kW h flywheel

K. Matsunaga; M. Tomita; N. Yamachi; K. Iida; J. Yoshioka; M. Isono; M. Hirose; H. Nasu; H. Kameno; A. Kubo; R. Takahata; N. Kitai; H. Yamamoto; Y. Nakamura; N. Koshizuka; M. Murakami

doi:10.1016/S0921-4534(02)01819-1

Fabrication and evaluation of superconducting bearing module for 10 kW h flywheel

K. Matsunaga, M. Tomita, N. Yamachi, K. Iida, J. Yoshioka, M. Isono, M. Hirose, H. Nasu, H. Kameno, A. Kubo, R. Takahata, N. Kitai, H. Yamamoto, Y. Nakamura, N. Koshizuka, M. Murakami

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

11 Citations (Scopus)

Abstract

We constructed a model superconducting magnetic bearing (SMB) module which will be installed for the 10 kW h class flywheel. The bearing is a radial type in that YBCO bulks are installed in the inner-stator and permanent magnet (PM) circuit in the outer-rotor. The PM circuit consists of NdFeB magnets and SPCC yokes. The maximum levitation force density of the superconducting bearing was 9.0 N/cm² at 77 K. The rotational loss of the SMB was 8.03 W at 6000 rpm with the load of 838 N, which was mainly caused by an inhomogeneity in magnetic field generated from the PM circuit.

Original language	English
Pages (from-to)	883-887
Number of pages	5
Journal	Physica C: Superconductivity and its applications
Volume	378-381
Issue number	PART 1
DOIs	https://doi.org/10.1016/S0921-4534(02)01819-1
Publication status	Published - 2002 Oct 1
Externally published	Yes

Keywords

Levitation force density
Rotational loss
Superconducting magnetic bearing
YBCO bulk superconductor

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

Access to Document

10.1016/S0921-4534(02)01819-1

Cite this

Matsunaga, K., Tomita, M., Yamachi, N., Iida, K., Yoshioka, J., Isono, M., Hirose, M., Nasu, H., Kameno, H., Kubo, A., Takahata, R., Kitai, N., Yamamoto, H., Nakamura, Y., Koshizuka, N., & Murakami, M. (2002). Fabrication and evaluation of superconducting bearing module for 10 kW h flywheel. Physica C: Superconductivity and its applications, 378-381(PART 1), 883-887. https://doi.org/10.1016/S0921-4534(02)01819-1

Matsunaga, K, Tomita, M, Yamachi, N, Iida, K, Yoshioka, J, Isono, M, Hirose, M, Nasu, H, Kameno, H, Kubo, A, Takahata, R, Kitai, N, Yamamoto, H, Nakamura, Y, Koshizuka, N & Murakami, M 2002, 'Fabrication and evaluation of superconducting bearing module for 10 kW h flywheel', Physica C: Superconductivity and its applications, vol. 378-381, no. PART 1, pp. 883-887. https://doi.org/10.1016/S0921-4534(02)01819-1

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title = "Fabrication and evaluation of superconducting bearing module for 10 kW h flywheel",

abstract = "We constructed a model superconducting magnetic bearing (SMB) module which will be installed for the 10 kW h class flywheel. The bearing is a radial type in that YBCO bulks are installed in the inner-stator and permanent magnet (PM) circuit in the outer-rotor. The PM circuit consists of NdFeB magnets and SPCC yokes. The maximum levitation force density of the superconducting bearing was 9.0 N/cm2 at 77 K. The rotational loss of the SMB was 8.03 W at 6000 rpm with the load of 838 N, which was mainly caused by an inhomogeneity in magnetic field generated from the PM circuit.",

keywords = "Levitation force density, Rotational loss, Superconducting magnetic bearing, YBCO bulk superconductor",

author = "K. Matsunaga and M. Tomita and N. Yamachi and K. Iida and J. Yoshioka and M. Isono and M. Hirose and H. Nasu and H. Kameno and A. Kubo and R. Takahata and N. Kitai and H. Yamamoto and Y. Nakamura and N. Koshizuka and M. Murakami",

note = "Funding Information: This work was supported by the New Energy and Industrial Technology Development Organization (NEDO) as Collaborative Research and Development of Superconducting Bearing Technologies for Flywheel Energy Storage System. ",

year = "2002",

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doi = "10.1016/S0921-4534(02)01819-1",

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T1 - Fabrication and evaluation of superconducting bearing module for 10 kW h flywheel

AU - Matsunaga, K.

AU - Tomita, M.

AU - Yamachi, N.

AU - Iida, K.

AU - Yoshioka, J.

AU - Isono, M.

AU - Hirose, M.

AU - Nasu, H.

AU - Kameno, H.

AU - Kubo, A.

AU - Takahata, R.

AU - Kitai, N.

AU - Yamamoto, H.

AU - Nakamura, Y.

AU - Koshizuka, N.

AU - Murakami, M.

N1 - Funding Information: This work was supported by the New Energy and Industrial Technology Development Organization (NEDO) as Collaborative Research and Development of Superconducting Bearing Technologies for Flywheel Energy Storage System.

PY - 2002/10/1

Y1 - 2002/10/1

N2 - We constructed a model superconducting magnetic bearing (SMB) module which will be installed for the 10 kW h class flywheel. The bearing is a radial type in that YBCO bulks are installed in the inner-stator and permanent magnet (PM) circuit in the outer-rotor. The PM circuit consists of NdFeB magnets and SPCC yokes. The maximum levitation force density of the superconducting bearing was 9.0 N/cm2 at 77 K. The rotational loss of the SMB was 8.03 W at 6000 rpm with the load of 838 N, which was mainly caused by an inhomogeneity in magnetic field generated from the PM circuit.

AB - We constructed a model superconducting magnetic bearing (SMB) module which will be installed for the 10 kW h class flywheel. The bearing is a radial type in that YBCO bulks are installed in the inner-stator and permanent magnet (PM) circuit in the outer-rotor. The PM circuit consists of NdFeB magnets and SPCC yokes. The maximum levitation force density of the superconducting bearing was 9.0 N/cm2 at 77 K. The rotational loss of the SMB was 8.03 W at 6000 rpm with the load of 838 N, which was mainly caused by an inhomogeneity in magnetic field generated from the PM circuit.

KW - Levitation force density

KW - Rotational loss

KW - Superconducting magnetic bearing

KW - YBCO bulk superconductor

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JF - Physica C: Superconductivity and its Applications

IS - PART 1

ER -

Fabrication and evaluation of superconducting bearing module for 10 kW h flywheel

Abstract

Keywords

ASJC Scopus subject areas

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