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PI Stabilization of Power Converters With Partial State Measurements

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5 Author(s)
Jaafar, A. ; SUPELEC Syst. Sci. Res. team, SUPELEC, Gif-sur-Yvette, France ; Alawieh, A. ; Ortega, R. ; Godoy, E.
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In a recent paper a procedure to design globally asymptotically stabilizing linear proportional plus integral controllers for switched power converters was proposed. The construction requires the measurement of the full state of the system, which is often unavailable in practice. In this note we identify a class of converters for which an asymptotically convergent reduced order observer, preserving the aforementioned stability property of the closed-loop, can be designed. The class is characterized by a simple linear matrix inequality. The new controller is illustrated with the widely-popular, and difficult to control, single-ended primary inductor converter, for which simulation and experimental results are presented.

Published in:

Control Systems Technology, IEEE Transactions on  (Volume:21 ,  Issue: 2 )

Date of Publication:

March 2013

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