Local Weak Observability Conditions of Sensorless AC Drives

Mohamad Koteich (1, 2) , Abdelmalek Maloum (2) , Gilles Duc (1) , Guillaume Sandou (3, 1)

1 L2S - Laboratoire des signaux et systèmes
2 Technocentre Renault [Guyancourt]
3 DISCO - Dynamical Interconnected Systems in COmplex Environments

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.

Mots clés: Induction Motor; AC machine; Observability Analysis; Sensorless control; Synchronous motor

Domaines: Automatique / Robotique; Energie électrique

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⟩