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Synchronization at startup and stable rotation reversal of sensorless nonsalient PMSM drives
KTH, School of Electrical Engineering (EES), Electrical Machines and Power Electronics.ORCID iD: 0000-0002-0744-2552
2006 (English)In: IEEE transactions on industrial electronics (1982. Print), ISSN 0278-0046, Vol. 53, no 2, 379-387 p.Article in journal (Refereed) Published
Abstract [en]

In this paper, a variant of the well-known voltage model is applied to rotor position estimation for sensorless control of nonsalient permanent-magnet synchronous motors (PMSMs). Particular focus is on a low-speed operation. It is shown that a guaranteed synchronization from any initial rotor position and stable reversal of rotation can be accomplished, in both cases under load. Stable rotation reversal is accomplished by making the estimator insensitive to the stator resistance. It is also shown that the closed-loop speed dynamics are similar to those of a sensored drive for speeds above approximately 0.1 per unit, provided that the model stator inductance is underestimated. Experimental results support the theory.

Place, publisher, year, edition, pages
2006. Vol. 53, no 2, 379-387 p.
Keyword [en]
permanent-magnet synchronous motor (PMSM), position estimation, sensorless control, stability analysis, rotor position, vector control, induction-motors, saliency, design, speed
National Category
URN: urn:nbn:se:kth:diva-15601DOI: 10.1109/tie.2006.870731ISI: 000236776900005ScopusID: 2-s2.0-33645724479OAI: diva2:333643
QC 20100525, QC 20111108Available from: 2010-08-05 Created: 2010-08-05 Last updated: 2011-11-08Bibliographically approved

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Wallmark, OskarLeksell, Mats
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