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Tests with a hybrid bearing for a flywheel energy storage system
Department of Electrical Engineering, Fluminense Federal University, Rio de Janeiro, Brazil.
Department of Electrical Engineering, Rio de Janeiro Federal University, Brazil.
Department of Electrical Engineering Rio de Janeiro Federal University, Brazil.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity. Univ Fed Juiz De Fora, Cidade Univ Plataforma 5 Martelos, BR-36036900 Juiz De Fora Mg, Brazil.
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2016 (English)In: Superconductors Science and Technology, ISSN 0953-2048, E-ISSN 1361-6668, Vol. 29, no 9, 095016Article in journal (Refereed) Published
Abstract [en]

This paper describes the design and experimental test of a passive magnetic bearing system composed by a superconductor magnetic bearing (SMB) and a permanent magnet bearing (PMB). This bearing setup is part of a flywheel energy storage system. The advantage of using a passive bearing system is that it offers low friction without the need of a magnetic bearing controller, increasing the reliability and decreasing the energy consumption. The first set of tests were quasi-static radial and axial force measurements of the PMB operating alone and together with the SMB. As the PMB is intrinsically unstable in one degree of freedom, the operation of the SMB together with the PMB is necessary to stabilize the system. After that, dynamic measurements were made for the SMB operating alone and together with the PMB. The resonant speeds were identified and the bearing radial and axial forces were also measured for the SMB and SMB + PMB operation. These results indicate that the studied bearing set is technologically feasible to be used in flywheel energy storage systems.

Place, publisher, year, edition, pages
2016. Vol. 29, no 9, 095016
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:uu:diva-305348DOI: 10.1088/0953-2048/29/9/095016ISI: 000383983500024OAI: oai:DiVA.org:uu-305348DiVA: diva2:1037399
Funder
Swedish Research CouncilSweGRIDS - Swedish Centre for Smart Grids and Energy StorageStandUp
Available from: 2016-10-14 Created: 2016-10-14 Last updated: 2017-11-29Bibliographically approved

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