Diagnosis and Mitigation of Sensor Malfunctioning in a Permanent Magnet Synchronous Generator Based Wind Energy Conversion System

Sajeeb Saha*, Md Enamul Haque, Md Apel Mahmud

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

An approach for diagnosis and mitigation of sensor malfunctioning in a permanent magnet synchronous generator based direct-drive variable speed wind energy conversion system (WECS) is presented in this paper. Malfunctioning of current sensors causes erroneous grid- and machine-side current measurements, which significantly affect the operation of grid- and machine-side controllers, and in turn, performance of the WECS system degrades. In the proposed approach, the sliding-mode observer-based fault diagnosis theory is used to diagnose (i.e., to detect and estimate) the error induced in the grid- and machine-side current measurements due to sensor malfunctioning. The proposed mitigation action rectifies the measured grid- and machine-side currents using estimated measurement errors, as soon as malfunctioning of sensors is diagnosed, and ensures resilient operation of the WECS against sensor malfunctioning. The accuracy and effectiveness of the proposed approach are verified through rigorous simulation and experimental studies, which clearly demonstrate the effectiveness of the proposed approach.

Original languageEnglish
Article number8226844
Pages (from-to)938-948
Number of pages11
JournalIEEE Transactions on Energy Conversion
Volume33
Issue number3
Early online date19 Dec 2017
DOIs
Publication statusPublished - Sep 2018
Externally publishedYes

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