Design and Innovative Test of a Linear Induction Motor for Urban MagLev Vehicles

Roberto Oliveira, Richard Magdalena Stephan, Antonio Carlos Ferreira, Joao Murta-Pina

Research output: Contribution to journalArticlepeer-review

11 Citations (SciVal)


This article presents the design and innovative test of a linear induction motor (LIM) to be used in the urban superconducting magnetic levitated vehicle named MagLev-Cobra. This levitation method, based on the flux pinning property of high-Temperature superconductors in the proximity of rare-earth permanent magnets, has constraints related to the lifting forces. This issue is even more critical as there is no control of the levitation gap, which changes according to the load. The motor design is based on analytical equations and computational simulations by finite element methods. An innovative workbench for tests was developed to measure values of interest, such as end effects, forces, electrical currents, magnetic flux densities, and others. Numerical and experimental results support the desired performance of the proposed LIM.

Original languageEnglish
Article number9190078
Pages (from-to)6949-6956
Number of pages8
JournalIEEE Transactions on Industry Applications
Issue number6
Publication statusPublished - 1 Nov 2020

Bibliographical note

Funding Information:
Manuscript received October 16, 2019; revised February 8, 2020, April 3, 2020, July 2, 2020, and August 13, 2020; accepted September 5, 2020. Date of publication September 9, 2020; date of current version November 19, 2020. Paper 2019-TSC-1335.R4, presented at the 2019 12th International Symposium on Linear Drives for Industry Applications, Neuchatel, Switzerland, Jul. 1–3, and approved for publication in the IEEE TRANSACTIONS ON INDUSTRY AP-PLICATIONS by the Transportation Systems Committee of the IEEE Industry Applications Society. This work was supported in part by the Brazilian agencies CNPq, in part by the CAPES Finance Code 001 and FAPERJ, and in part by the Portugueseagency FCT (Fundação para a Ciência e a Tecnologia), within the scope of Research Unit CTS, Centre of Technology and Systems, with the reference UID/EEA/00066/2019. (Corresponding author: Roberto André Henrique de Oliveira.) Roberto André Henrique de Oliveira is with the Institute for the Development of New Technologies (UNINOVA), NOVA School of Science and Technology (FCT NOVA), 2825-149 Caparica, Portugal (e-mail:

Publisher Copyright:
© 1972-2012 IEEE.


  • Linear induction motor (LIM)
  • MagLev
  • superconducting magnetic levitation (SML) levitation

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering


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