Detection of speed oscillation in induction motor drives using the instantaneous stator power

Author

Ghassemzadeh, Majid ; Trzynadlowski, Andrzej M. ; Legowski, Stanislaw F.

Author_Institution

Dept. of Electr. Eng., Nevada Univ., Reno, NV, USA

Volume

1

fYear

1996

Firstpage

394

Abstract

Oscillation of speed in an induction motor drive indicates mechanical imperfections and/or vibration in the drive system. For the purpose of noninvasive diagnostics, analysis of the power spectrum of stator current is usually employed for the detection of speed oscillation. In this paper, another medium, namely the instantaneous stator power, is investigated. It is shown that the power spectrum of instantaneous stator power contains the so-called characteristic component directly at the frequency of oscillation. Theoretical analysis and supporting results of laboratory experiments are presented

Keywords

electric current measurement; induction motor drives; oscillations; power measurement; stators; velocity measurement; induction motor drives; instantaneous stator power; mechanical imperfections; noninvasive diagnostics; speed oscillation detection; vibration; AC motors; Admittance; Frequency; Induction motor drives; Induction motors; Laboratories; Rotors; Stators; Vibrations; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference and Exposition, 1996. APEC '96. Conference Proceedings 1996., Eleventh Annual

Conference_Location

San Jose, CA

Print_ISBN

0-7803-3044-7

Type

conf

DOI

10.1109/APEC.1996.500472

Filename

500472