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.
Author: | Benjamin Grothmann, Thomas Poelsterl, Dieter Gerling |
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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 |