Permanent magnet synchronous drives observability analysis for motion-sensorless control
Mohamad Koteich, Abdelmalek Maloum, Gilles Duc, Guillaume Sandou
TL;DR
This paper analyzes the local observability of sensorless permanent magnet synchronous drives, especially at standstill, using numerical simulations to improve understanding of their performance limitations.
Contribution
It provides a detailed observability analysis for both salient and non-salient PMSMs at standstill, addressing a key challenge in sensorless drive control.
Findings
Observability issues are prominent at standstill conditions.
Numerical simulations illustrate the observability characteristics.
Insights can guide improved sensorless control strategies.
Abstract
Motion-sensorless control techniques of electrical drives are attracting more attention in different industries. The local observability of sensorless permanent magnet synchronous drives is studied in this paper. A special interest is given to the standstill operation condition, where sensorless drives suffer of poor performance. Both, salient and non-salient machines are considered. The results are illustrated using numerical simulations.
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