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Sensorless position estimation and control of permanent-magnet synchronous motors using a saturation model

Authors: Al Kassem Jebai, F. Malrait, Ph. Martin, P. Rouchon, Int. Journal of Control, Vol 89 no 3, pp. 535-549, Oct 04 2015. DOI: 10.1080/00207179.2015.1084049, available online
Sensorless control of permanent-magnet synchronous motors at low velocity remains a challenging task. A now well-established method consists of injecting a high-frequency signal and using the rotor saliency, both geometric and magnetic-saturation induced. This paper proposes a clear and original analysis based on second-order averaging of how to recover the position information from signal injection; this analysis blends well with a general model of magnetic saturation. It also proposes a simple parametric model of the saturated motor, based on an energy function which simply encompasses saturation and cross-saturation effects. Experimental results on a surface-mounted motor and an interior magnet motor illustrate the relevance of the approach.
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BibTeX
@Article{2015-12-29,
author = {F. Malrait Al Kassem Jebai, Ph. Martin, P. Rouchon},
title = {Sensorless position estimation and control of permanent-magnet synchronous motors using a saturation model},
journal = {Int. Journal of Control},
volume = {89},
number = {3},
pages = {535-549},
year = {2015},
}