Analysis and Design of a Position Observer With Resistance Adaptation for Synchronous Reluctance Motor Drives

Author

Tuovinen, Tommi ; Hinkkanen, Marko ; Luomi, J.

Author_Institution

Dept. of Electr. Eng., Aalto Univ., Espoo, Finland

Volume

49

Issue

1

fYear

2013

fDate

Jan.-Feb. 2013

Firstpage

66

Lastpage

73

Abstract

A back-electromotive-force-based reduced-order position observer with stator-resistance adaptation is analyzed for motion-sensorless synchronous reluctance motor (SyRM) drives. Analytical equations for steady-state estimation errors and stability conditions are derived (with and without resistance adaptation), taking into account errors in the parameter estimates. The effect of the observer gain on the noise reduction is studied by means of eigenvector analysis. A robust gain selection is proposed, which maximizes the allowed uncertainties in the parameter estimates. The proposed observer design is experimentally evaluated using a 6.7-kW SyRM drive; stable operation is demonstrated at low speeds under various parameter errors.

Keywords

adaptive control; control system analysis; eigenvalues and eigenfunctions; electric current control; observers; reluctance motor drives; sensorless machine control; stability; back electromotive force; eigenvector analysis; motion sensorless synchronous reluctance motor; noise reduction; observer gain; power 6.7 kW; reduced order position observer; robust gain selection; stability condition; stator resistance adaptation; steady state estimation error; synchronous reluctance motor drives; Estimation error; Observers; Rotors; Stability analysis; Stators; Steady-state; Uncertain systems; Observer; speed sensorless; stability conditions; stator resistance estimation;

fLanguage

English

Journal_Title

Industry Applications, IEEE Transactions on

Publisher

ieee

ISSN

0093-9994

Type

jour

DOI

10.1109/TIA.2012.2228616

Filename

6355986