Sensorless synchronous motor drives: A review of flux observer-based position estimation schemes using the projection vector framework
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Journal Title
Journal ISSN
Volume Title
A2 Katsausartikkeli tieteellisessä aikakauslehdessä
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Date
2021-01-01
Major/Subject
Mcode
Degree programme
Language
en
Pages
10
Series
IEEE Transactions on Power Electronics
Abstract
This article reviews six fundamental-wave excitation sensorless techniques for synchronous machines reported in the literature. All the techniques rely on a hybrid flux observer scheme, combining the voltage and current-models of the machine, and use the flux observer error signal to track the rotor phase angle and the rotational speed. A common mathematical framework with magnetic nonlinearity is constructed for the stability analysis where each of the studied technique is represented by a unique projection vector. The dynamics of the flux and the position observer is investigated and the regions of instability are identified for each scheme under similar operating conditions. Experimental validation to support the stability analysis is reported on a 1.1-kW synchronous reluctance machine test-bench.Description
Keywords
Sensorless control, Synchronous machine, Projection vector framework, Stability analysis
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Citation
Varatharajan, A, Pellegrino, G, Armando, E & Hinkkanen, M 2021, ' Sensorless synchronous motor drives : A review of flux observer-based position estimation schemes using the projection vector framework ', IEEE Transactions on Power Electronics, vol. 36, no. 7, 9312430, pp. 8171-8180 . https://doi.org/10.1109/TPEL.2020.3048922
