Constrained state-feedback control of an externally excited synchronous machine

State-feedback control of externally excited synchronous machines employed in applications such as hybrid electric vehicles and full electric vehicles is a challenging problem. Indeed, these applications are characterized by fast dynamics that are subject to hard physical and control constraints. Th...

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Bibliographic Details
Published in2013 21st Mediterranean Conference on Control and Automation (MED) pp. 1133 - 1140
Main Authors Carpiuc, Sabin-Constantin, Lazar, Mircea
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.06.2013
Subjects
Angular velocity
Equivalent circuits
Rotors
Stability analysis
Stator windings
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DOI10.1109/MED.2013.6608863

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Summary:State-feedback control of externally excited synchronous machines employed in applications such as hybrid electric vehicles and full electric vehicles is a challenging problem. Indeed, these applications are characterized by fast dynamics that are subject to hard physical and control constraints. The goal of this paper is to provide a controller synthesis method that can answer these challenges effectively. To this end, firstly, a linear control law is obtained for the unconstrained dynamics via a standard control Lyapunov function (CLF), along with an admissible basin of attraction. Then, a piecewise affine control law defined on a cubic partition of the state-space is obtained for the constrained dynamics via a flexible CLF. An a posteriori test for checking stability and invariance of a set of initial conditions for the resulting closed-loop dynamics is also proposed. The effectiveness of the developed synthesis method is demonstrated in a realistic simulation scenario.
DOI:10.1109/MED.2013.6608863