Detection of airgap eccentricity for permanent magnet synchronous motors based on the d-axis inductance
- The majority of the work performed for detecting eccentricity faults for permanent magnet synchronous motors (PMSM) focus on motor current signature analysis (MCSA), as it provides continuous on-line monitoring with existing current sensors. However, MCSA cannot be applied under nonstationary conditions and cannot distinguish faults with load torque oscillations, which are limitations for many PMSM drive applications. In this paper, it is shown that the d-axis inductance, L d , decreases with increase in the severity of eccentricity due to the change in the degree of magnetic saturation, and it is proposed as a new fault indicator. The inverter can be used to perform a standstill test automatically whenever the motor is stopped, to measure L d for eccentricity testing independent of load variations or oscillations, which is not possible with MCSA. An FE and experimental study on a 10hp PMSM verifies that eccentricity can be detected independent of the load with high sensitivity and reliability.
Author: | Jongman Hong, Sang Bin Lee, Christian Kral, Anton Haumer |
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DOI: | https://doi.org/10.1109/DEMPED.2011.6063651 |
ISBN: | 978-1-4244-9301-2 |
ISBN: | 978-1-4244-9303-6 |
Parent Title (English): | 8th IEEE International Symposium on Diagnostics for Electric Machines, Power Electronics & Drives (SDEMPED), 2011 // 05. - 08.09.2011, Bologna, Italy |
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: | Airgap Eccentricity; Condition Monitoring; Diagnostics; Magnetic Saturation; Motor Current Signature Analysis (MCSA); Permanent Magnet Synchronous Motor; fault location; inductance; load (electric); machine testing; permanent magnet motors; synchronous motor protection |
First Page: | 378 |
Last Page: | 384 |
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 |