A general algorithm for speed and position estimation of AC motors
Harnefors, L.; Nee, H.-P.
Industrial Electronics, IEEE Transactions on
Volume 47, Issue 1, Feb 2000 Page(s):77 - 83
Digital Object Identifier   10.1109/41.824128
Summary:A computationally efficient speed and position estimation algorithm, generally applicable to AC motor drives, is designed and analyzed. Applications include: (a) sensorless permanent-magnet and reluctance synchronous motor drives using the fundamental excitation as information source; (b) sensorless drives using saliency and signal injection; and (c) sensored drives using resolvers. Particular attention is given for case (a). Low parameter sensitivity in the entire speed range (except at low speeds for the reluctance motor)-implying a small position estimation error-and good dynamic properties at nominal speeds are verified

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