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A test rig for thrust force measurements of an all HTS linear synchronous motor

Pina, J and Pereira, P and Valtchev, S and Gonçalves, A and Neves, M Ventim and Alvarez, A and Rodrigues, L (2008) A test rig for thrust force measurements of an all HTS linear synchronous motor. Journal of Physics: Conference Series, 97, 012220. eISSN 1742-6596. URL: http://dx.doi.org/10.1088/1742-6596/97/1/012220. (ISI Web of Science, Citations: 5).

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Official URL: http://dx.doi.org/10.1088/1742-6596/97/1/012220

Abstract

This paper presents the design of a test rig for an all HTS linear synchronous motor. Although this motor showed to have several unattractive characteristics, its design raised a number of problems which must be considered in future HTS machines design. HTS electromagnetic properties led to the development of new paradigms in electrical machines and power systems, as e. g. in some cases iron removal and consequent assembly of lighter devices. This is due to superconductor's ability to carry high currents with minimum losses and consequent generation in the surrounding air of flux densities much higher than the allowed by ferromagnetic saturation. However, severe restrictions in HTS power devices design that goes further beyond cryogenic considerations must be accounted in. This is usually the case when BSCCO tapes are used as conductors. Its bending limitations and the presence of flux components perpendicular to tape surface, due to the absence of iron, have to be considered for it may turn some possible applications not so attractive or even practically unfeasible. An all HTS linear synchronous motor built by BSCCO tapes as armature conductors and two trapped-flux YBCO bulks in the mover was constructed and thrust force measurements are starting to be performed. Although the device presents severe restrictions due to the exposed and other reasons, it allowed systematising its design. A pulsed-field magnetiser to generate opposite fluxes for both YBCO bulks is also detailed. Thrust force numerical predictions were already derived and presented.

Item Type:Article
Divisions:Departamento de Engenharia Electrotécnica > Electrotecnia e Máquinas Eléctricas
Centre of Technology and Systems 2007-2010 > CTS0710-B Industrial/Manufacturing Systems and Energy Efficiency > CTS0710-B1 Energy
ID Code:1817
Deposited By:Elsa Abrantes
Deposited On:27 Nov 2009 10:03
Last Modified:25 Mar 2011 13:55

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