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Rotor-Current and Position Estimator for Doubly-Fed Induction Generators: Application to Sensor-Fault Detection

par Mollet, Yves ;Gyselinck, Johan
Référence 4th IEEE International Energy Conference (ENERGYCON2016), Leuven, Belgium, 4-8 April 2016
Publication Publié, 2016

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Résumé :

A combined encoder and rotor-current-sensor fault detection and isolation algorithm for doubly-fed induction machines is presented. A rotor-position and current estimator based on air-gap power vector computation is used for residual generation. A cumulative-sum function permits detecting and isolating the investigated faults. The algorithm is experimentally tested on a 3 kW generator in steady and transient regimes. Sensor outages as well as current-sensor gain drifts and offsets are investigated. Transients do not significantly affect the algorithm, which alsoallows for a very short detection time for the most critical faults.