Parameter estimation of squirrel-cage induction motors without torque measurements

Author

Pedra, J. ; Sainz, L.

Author_Institution

Dept. of Electr. Eng., ETSEIB-UPC, Barcelona, Spain

Volume

153

Issue

2

fYear

2006

fDate

3/2/2006 12:00:00 AM

Firstpage

263

Lastpage

270

Abstract

A very simple method for determining squirrel-cage induction motor parameters is presented, and some problems in the determination of parameters with two methods proposed in IEEE Standard 112 are discussed and clarified. The double-cage model is used to describe the motor response for the entire operating range. Equivalent circuit parameters are calculated from data of three tests: no-load test, locked-rotor test and overload test. The method has the advantage of not requiring torque measurements. It is formulated as an iterative algorithm, and has been tested with 16 motors of different power ratings, showing very good convergence. The influence of measurement errors on the stability of the proposed method has been studied and its behaviour is very good.

Keywords

IEEE standards; equivalent circuits; iterative methods; machine testing; measurement errors; parameter estimation; rotors; squirrel cage motors; stability; IEEE Standard 112; double-cage model; equivalent circuit parameter; iterative algorithm; locked-rotor test; measurement errors; no-load test; overload test; parameter estimation; power rating; squirrel-cage induction motor; stability;

fLanguage

English

Journal_Title

Electric Power Applications, IEE Proceedings -

Publisher

iet

ISSN

1350-2352

Type

jour

DOI

10.1049/ip-epa:20050383

Filename

1608664