Comparative Study Of The Inductances Of An Induction Motor With Rotor Eccentricities

Elkin F. Rodriguez; José Andrés Santisteban; Antônio Carlos Ferreira

doi:10.18618/REP.2010.3.213219

Authors

Elkin F. Rodriguez Fluminense Federal University, PGMEC, Niterói – RJ, Brazil.
José Andrés Santisteban Fluminense Federal University, PGMEC, Niterói – RJ, Brazil.
Antônio Carlos Ferreira Rio de Janeiro Federal University, COPPE – PEE, Rio de Janeiro – RJ, Brazil

DOI:

https://doi.org/10.18618/REP.2010.3.213219

Keywords:

Airgap Eccentricity, Bearingless Induction Motor, Finite Elements Method, Inductance

Abstract

In this work, the inductances of an induction motor, which rotor may be misaligned, are evaluated. Two types of analysis are performed: Analytical Method (AM) and Finite Element Method (FEM). For radial displacements, both methods show equivalent results but to evaluate inductances as a function of angular displacements, only with FEM was possible to get results as with AM it would be necessary intricate functions. The inductances obtained with FEM were included in simulations of a bearingless induction motor with split windings. This approach shows a good agreement with experimental results.

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Author Biographies

Elkin F. Rodriguez, Fluminense Federal University, PGMEC, Niterói – RJ, Brazil.

was born in Bogotá, Colombia, in 1978. He received the Dipl.-Eng. degree in Electronic Engineering from “Los Libertadores” University, Bogotá, Colombia, in 2003. The M.Sc. degree in Mechanical Engineering from the Fluminense Federal University (UFF), in 2006, where he is currently working toward the D.Sc. degree. His main interests are control systems, instrumentation and electric machines.

José Andrés Santisteban, Fluminense Federal University, PGMEC, Niterói – RJ, Brazil.

was born in Lima, Perú, 1961. He received the B.Sc. and the Engineer degrees in Electronic Engineering from Universidad Nacional de Ingeniería (UNI), Lima, Perú, in 1986 and 1988 respectively and the M.Sc and D.Sc. degrees in electrical engineering from Universidade Federal do Rio de Janeiro (COPPE/UFRJ), Brazil, in 1993 and 1999 respectively. From 1988 to 1991, he worked as a researcher and as an assistant professor in UNI. From 1993 to 1995 was a researcher at UFRJ. In 1999, he joined to Universidade Federal Fluminense, Niterói, Brazil, where he is currently an Associate Professor in the Electrical Engineering Department and the Post-graduate Program in Mechanical Engineering. He was an invited Associate Professor in Tokyo University of Science in 2003. His current research activities include bearingless machines, power electronics and electrical drives. Dr. Santisteban is member of IEEE and SOBRAEP (The Brazilian Society of Power Electronics).

Antônio Carlos Ferreira, Rio de Janeiro Federal University, COPPE – PEE, Rio de Janeiro – RJ, Brazil

received the B.Sc. and M.Sc. degrees from the Federal University of Rio de Janeiro, Rio de Janeiro, Brazil, in 1987 and 1991, respectively, and the Ph.D. degree from the University of Cambridge, Cambridge, U.K., in 1997, all in Electrical Engineering. Since 1989, he has been with the Graduate School of Engineering, Federal University of Rio de Janeiro, where he is currently an Associate Professor, teaching at both under-graduate and post-graduate levels. His main interests are power system and electrical machines.

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