Current harmonic detection for induction motor speed sensorless control using fast orthogonal search

Author

Nutt, K. ; Tarbouchi, M. ; McGaughey, D. ; Chikhani, A.

Author_Institution

Dept. of Electr. Eng., R. Mil. Coll. of Canada, Kingston, Ont., Canada

Volume

4

fYear

2002

fDate

2002

Firstpage

3088

Abstract

This paper describes the design of an improved method of detection of harmonic current components in AC machines. A fully digital implementation of the speed estimator requires the use of DSP routines to perform a spectral analysis of the sampled current waveform and extract harmonic information. Conventional methods using Fast Fourier Transforms (FFTs) are limited by the frequency resolution and the minimum number of samples required to obtain this resolution. The Fast Orthogonal Search (FOS) alleviates these restrictions, which makes it suitable for use in this type of application.

Keywords

functional analysis; harmonic analysis; induction motors; machine control; parameter estimation; search problems; signal sampling; velocity control; AC machines; DSP routines; current harmonic detection; fast orthogonal search; fully digital implementation; harmonic current components; induced stator currents; induction motor speed sensorless control; sampled current waveform; spectral analysis; speed estimator; AC machines; AC motors; Amplitude estimation; Frequency estimation; Induction motors; Power harmonic filters; Rotors; Sampling methods; Sensorless control; Stators;

fLanguage

English

Publisher

ieee

Conference_Titel

American Control Conference, 2002. Proceedings of the 2002

ISSN

0743-1619

Print_ISBN

0-7803-7298-0

Type

conf

DOI

10.1109/ACC.2002.1025263

Filename

1025263