Analysis and modeling of rotor slot enclosure effects in high speed induction motors

Author

Boglietti, A. ; Bojoi, R. ; Cavagnino, A. ; Guglielmi, P. ; Miotto, A.

Author_Institution

Dipt. di Ing. Elettr., Politec. di Torino, Torino, Italy

fYear

2011

fDate

17-22 Sept. 2011

Firstpage

154

Lastpage

161

Abstract

In this paper the effects due the presence of closed or open rotor slots in high speed induction motors is presented. In particular, the problem linked to electromagnetic effects on the motor current is analyzed in detail. Two 32000 rpm induction motor prototypes, the former with open rotor slots and the latter with closed ones, have been built and tested in order to verify the theoretical analysis and considerations. A modified steady-state equivalent circuit to take into account the electromagnetic effects of rotor closed slots is proposed and experimental tests have been performed to validate the proposed model. The presented study has been focused on high speed induction motors for turbomolecolar vacuum pumps.

Keywords

equivalent circuits; induction motors; rotors; vacuum pumps; electromagnetic effects; high speed induction motors; motor current; rotor slot enclosure effects; steady-state equivalent circuit; turbomolecolar vacuum pumps; Bridge circuits; Equivalent circuits; Generators; Induction motors; Rotors; Stators; Torque; high speed applications; induction motor modeling; induction motors; molecular pump; rotor slot enclosure effects;

fLanguage

English

Publisher

ieee

Conference_Titel

Energy Conversion Congress and Exposition (ECCE), 2011 IEEE

Conference_Location

Phoenix, AZ

Print_ISBN

978-1-4577-0542-7

Type

conf

DOI

10.1109/ECCE.2011.6063763

Filename

6063763