On Some Nonlinear Current Controllers for Three-Phase Boost Rectifiers
Gensior, A.
Sira-Ramirez, H.
Rudolph, J.
Guldner, H.
Elektrotech. Inst., Tech. Univ. Dresden, Dresden;
This paper appears in: Industrial Electronics, IEEE Transactions on
Publication Date: Feb. 2009
Volume: 56,
Issue: 2
On page(s): 360-370
ISSN: 0278-0046
INSPEC Accession Number: 10478225
Digital Object Identifier: 10.1109/TIE.2008.2003370
First Published: 2008-08-19
Current Version Published: 2009-02-02
Abstract
Several flatness-based current controllers for three-phase three-wire boost rectifiers are compared. For this purpose, the flatness of a rectifier model is shown, and a trajectory planning algorithm that nominally achieves voltage regulation in finite time is given. The main focus lies on the inner loop current controllers. On one hand, linearization-based controllers using exact feedback linearization, exact feedforward linearization, and input-output linearization are discussed. On the other hand, two passivity-based approaches are compared. The first one is the energy shaping and damping injection method, and the other one uses exact tracking error dynamics passive output feedback. Furthermore, a reduced-order load observer is given, and a method that allows the prevention of invalid switching patterns is presented. The presented control algorithms are tested by simulations on a switched model.
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