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Detection and classification of rotor demagnetization and eccentricity faults for PM synchronous motors

  • Condition monitoring of rotor problems such as demagnetization and eccentricity in permanent magnet synchronous motors (PMSM) is essential for guaranteeing high motor performance, efficiency, and reliability. However, there are many limitations to the off-line and on-line methods currently used for PMSM rotor quality assessment. In this paper, an inverter-embedded technique for automated detection and classification of PMSM rotor faults is proposed as an alternative. The main concept is to use the inverter to perform a test whenever the motor is stopped, to detect rotor faults independent of operating conditions or load torque oscillations, which is not possible with motor current signature analysis (MCSA). The d-axis is excited with a dc+ac signal, and the variation in the inductance pattern due to the change in the degree of magnetic saturation caused by demagnetization or eccentricity is observed for fault detection. An experimental study on a 7.5kW PMSM verifies that demagnetization and eccentricity can be detected and classified independent of the load with high sensitivity.

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Metadaten
Author:Jongman Hong, Doosoo Hyun, Tae-june Kang, Sang Bin Lee, Christian Kral, Anton Haumer
DOI:https://doi.org/10.1109/ECCE.2011.6064103
ISBN:978-1-4577-0542-7
ISBN:978-1-4577-0541-0
ISBN:978-1-4577-0540-3
ISSN:2329-3721
ISSN:2329-3748
Parent Title (English):2011 IEEE Energy Conversion Congress and Exposition (ECCE 2011) : Energy conversion innovation for a clean energy future ; Phoenix, Arizona, USA, 17.-22.09.2011
Publisher:IEEE
Place of publication:Piscataway, NJ
Document Type:conference proceeding (article)
Language:English
Year of first Publication:2011
Release Date:2022/12/10
Tag:AC Machine; Condition Monitoring; Demagnetization; Eccentricity; Magnetic Saturation; Permanent Magnet (PM); Synchronous Motor (SM); d-axis Inductance; fault diagnosis; invertors; permanent magnet motors; synchronous motors
First Page:2512
Last Page:2519
Institutes:Fakultät Elektro- und Informationstechnik
Fakultät Elektro- und Informationstechnik / Labor Elektrische Maschinen und Antriebstechnik
Begutachtungsstatus:peer-reviewed
Publication:Externe Publikationen
research focus:Energie und Mobilität
Licence (German):Keine Lizenz - Es gilt das deutsche Urheberrecht: § 53 UrhG