Local Weak Observability Conditions of Sensorless AC Drives

Mohamad Koteich 1, 2, * Abdelmalek Maloum 2 Gilles Duc 1 Guillaume Sandou 3, 1
* Corresponding author
3 DISCO - Dynamical Interconnected Systems in COmplex Environments
L2S - Laboratoire des signaux et systèmes, Inria Saclay - Ile de France, SUPELEC, CNRS - Centre National de la Recherche Scientifique : UMR8506
Abstract : Alternating current (AC) electrical drive control without mechanical sensors is an active research topic. This paper studies the observability of both induction machine and synchronous machine sensorless drives. Observer-based sensorless techniques are known for their deteriorated performance in some operating conditions. An observability analysis of the machines helps understanding (and improving) the observer's behavior in the aforementioned conditions.
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Mohamad Koteich, Abdelmalek Maloum, Gilles Duc, Guillaume Sandou. Local Weak Observability Conditions of Sensorless AC Drives. 17th European Conference on Power Electronics and Applications (EPE-ECCE Europe 2015), Sep 2015, Geneva, Switzerland. ⟨10.1109/EPE.2015.7309238⟩. ⟨hal-01151725⟩

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