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Online compensation of current sensor gain-faults for safety-relevant IPM-drives

  • Detection and compensation of current sensor gain-faults regardless of the operating-point is a crucial aspect for safety-relevant servo-drives. This paper presents and investigates a new direct phase-gain re-balancing methodology, especially suited for interior permanent magnet machine (IPM) drives mostly operating at low speed-ranges including standstill. The proposed model-based approach utilizes high-frequency signal-injection (HFI) to facilitate fast and persistent sensor monitoring for any operating state of the drive. No additional sensing hardware is required. Extraction of the HFI-phase-current response enables detection and immediate compensation of sensor gain-faults. Implementation aspects of the proposed concept are discussed thoroughly. Experimental results are presented to prove and investigate robustness, reliability and fault-tolerant performance.

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Metadaten
Author:Benjamin Grothmann, Thomas Poelsterl, Dieter Gerling
DOI:https://doi.org/10.1109/ITEC.2017.7993355
Parent Title (English):2017 IEEE Transportation Electrification Conference and Expo (ITEC), 22-24 June 2017, Chicago, IL, USA
Publisher:IEEE
Document Type:conference proceeding (article)
Language:English
Year of first Publication:2017
Release Date:2022/05/12
Tag:Acoustic noise; Current measurement; Frequency synchronization; Hardware; Phase measurement; Signal to noise ratio; Torque
First Page:701
Last Page:706
Institutes:Fakultät Elektro- und Informationstechnik
Begutachtungsstatus:peer-reviewed
research focus:Energie und Mobilität
Licence (German):Keine Lizenz - Es gilt das deutsche Urheberrecht: § 53 UrhG