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Research and Development of Alternative Concepts in HTS Machines

Pina, João and Inácio, David and Luis, Gonçalo and Ceballos, José M. and Pereira, Pedro and Martins, João and Ventim-Neves, M. and Alvarez, Alfredo and Rodrigues, A. Leão (2011) Research and Development of Alternative Concepts in HTS Machines. IEEE Transactions on Applied Superconductivity, 21 (3), pp. 1141-1145. ISSN 1051-8223. eISSN 1558-2515. URL: http://dx.doi.org/10.1109/TASC.2010.2094594.

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Official URL: http://dx.doi.org/10.1109/TASC.2010.2094594

Abstract

High temperature superconducting (HTS) machines are recognized to offer several advantageous features when comparing to conventional ones. Amongst these, highlights the decrease in weight and volume of the machines, due to increased current density in conductors or the absence of iron slots' teeth; or the decrease in AC losses and consequent higher efficiency of the machines, even accounting for cryogenics. These concepts have been already demonstrated and some machines have even achieved commercial stage. In this paper, several alternative approaches are applied to electrical motors employing HTS materials. The first one is an all superconducting linear motor, where copper conductors and permanent magnets are replaced by Bi-2223 windings and trapped flux magnets, taking advantage of stable levitation due to flux pinning, higher current densities and higher excitation field. The second is an induction disk motor with Bi-2223 armature, where iron, ironless and hybrid approaches are compared. Finally, an innovative command strategy, consisting of an electronically variable pole pairs' number approach, is applied to a superconducting hysteresis disk motor. All these concepts are being investigated and simulation and experimental results are presented.

Item Type:Article
Divisions:Centre of Technology and Systems 2007-2010 > CTS0710-B Industrial/Manufacturing Systems and Energy Efficiency > CTS0710-B1 Energy
Departamento de Engenharia Electrotécnica 2010 > DEE2010-B Energia e Sistemas > DEE2010-B1 Energia
ID Code:2534
Deposited By:MSc. Pedro Miguel Ribeiro Pereira
Deposited On:01 Apr 2011 15:00
Last Modified:29 Jul 2013 11:44

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