A methodology to determine gains of induction motor flux observers based on a theoretical parameter sensitivity analysis

Author

Robyns, Benoît ; Berthereau, Frédérique ; Cossart, Gregory ; Chevalier, Loic ; Labrique, Francis ; Buyse, Hervé

Author_Institution

Lab. d´´Electrotechnique, Ecole des Hautes Etudes Commerciales, Montreal, Que., Canada

Volume

15

Issue

6

fYear

2000

fDate

11/1/2000 12:00:00 AM

Firstpage

983

Lastpage

995

Abstract

A method to compute gains of induction machine flux observers, based on a theoretical sensitivity analysis taking the magnetic saturation into account, with the aim to minimize the observer sensitivity to electrical parameter uncertainties is proposed in this paper. It is shown for a reduced order observer, that the sensitivity to parameter uncertainties may be independent of the reference frame, when a modification is introduced in the classical determination of the slip frequency. It is also shown how to extend the proposed method to a full order observer. The theoretical study is completed by experiments on a 750 W induction machine (using DSP TMS320C31) which confirms the theoretical results

Keywords

digital signal processing chips; induction motor drives; machine vector control; magnetic flux; magnetic variables control; observers; robust control; sensitivity analysis; uncertain systems; 750 W; DSP TMS320C31; electrical parameter uncertainties; gain determination; induction motor flux observers; magnetic saturation; observer sensitivity; reduced order observer; robustness; slip frequency; theoretical sensitivity analysis; Error correction; Induction machines; Induction motors; Magnetic flux; Magnetic separation; Observers; Saturation magnetization; Sensitivity analysis; Stators; Uncertain systems;

fLanguage

English

Journal_Title

Power Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0885-8993

Type

jour

DOI

10.1109/63.892703

Filename

892703