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Reduced-Order Square-Root EKF for Sensorless Control of PMSM Drives
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SYSNO ASEP 0368814 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Reduced-Order Square-Root EKF for Sensorless Control of PMSM Drives Author(s) Šmídl, Václav (UTIA-B) RID, ORCID
Peroutka, Z. (CZ)Source Title Proceedings of the 37th Annual Conference of the IEEE Industrial Electronics Society. - Piscataway : IEEE, 2011 - ISSN 1553-572X - ISBN 978-1-61284-971-3 Pages s. 1929-1934 Number of pages 6 s. Publication form www - www Action IEEE Industrial Electronics, IECON 2011 - 37th Annual Conference on Event date 07.11.2011-10.11.2011 VEvent location Melbourne Country AU - Australia Event type WRD Language eng - English Country US - United States Keywords sensorless control ; square root EKF ; PMSM drive Subject RIV JA - Electronics ; Optoelectronics, Electrical Engineering R&D Projects GAP102/11/0437 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z10750506 - UTIA-B (2005-2011) UT WOS 000299032402033 DOI 10.1109/IECON.2011.6119446 Annotation Performance of square-root extended Kalman filter (EKF) based on reduced order models for sensorless control of permanent magnet synchronous motor (PMSM) drives is studied. The reduced order model of PMSM has two-dimensional state vector comprising of: (i) electrical rotor speed, and (ii) electrical rotor position. These state quantities are estimated by the EKF without either speed or position sensor on the motor shaft. The reduction of the model order results in dramatic speed-up of calculation of the estimator which takes only a few tens of microseconds on a conventional fixed-point digital signal processor. Accuracy of the estimator is improved using square-root representation of the covariance matrix. Due to its low computationalrequirements, the proposed square-root EKF estimator is eligible for sophisticated diagnostics as well for sensorless control of PMSM drive in a wide range of industrial applications. Presented theoretical conclusions are verified by both simulations and experiments carried out on developed PMSM drive prototype of rated power of 10.7kW. Workplace Institute of Information Theory and Automation Contact Markéta Votavová, votavova@utia.cas.cz, Tel.: 266 052 201. Year of Publishing 2012
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