Analysis and design of a position observer with resistance adaptation for synchronous reluctance motor drives

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Journal Title
Journal ISSN
Volume Title
School of Electrical Engineering | A4 Artikkeli konferenssijulkaisussa
Date
2011
Major/Subject
Mcode
Degree programme
Language
en
Pages
8
Series
Abstract
A back-EMF-based reduced-order position observer with stator-resistance adaptation is analyzed for motion-sensorless synchronous reluctance motor 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 synchronous reluctance motor drive; stable operation is demonstrated at low speeds under various parameter errors.
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Keywords
observer, speed sensorless, stability conditions, stator resistance estimation
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Citation
Tuovinen, Toni & Hinkkanen, Marko & Luomi, Jorma. 2011. Analysis and design of a position observer with resistance adaptation for synchronous reluctance motor drives. 2011 IEEE Energy Conversion Congress and Exposition (ECCE). 8. ISBN 978-1-4577-0542-7 (electronic). DOI: 10.1109/ecce.2011.6063753.