Zero-Steady-State-Error Input-Current Controller for Regenerative Multilevel Converters Based on Single-Phase Cells
Lezana, P.
Silva, C.A.
Rodriguez, J.
Perez, M.A.
Departamento de Electronica, Univ. Tecnica Federico Santa Maria, Valparaiso;
This paper appears in: Industrial Electronics, IEEE Transactions on
Publication Date: April 2007
Volume: 54,
Issue: 2
On page(s): 733-740
ISSN: 0278-0046
INSPEC Accession Number: 9400422
Digital Object Identifier: 10.1109/TIE.2007.891994
Current Version Published: 2007-03-05
Abstract
Multicell converters are one of the alternative topologies for medium-voltage industrial drives. For an application requiring regenerative capability, each power cell must be constructed with a three- or single-phase pulsewidth-modulation (PWM) rectifier as front end. The choice of single-phase PWM rectifiers for the input of the cells results in a reduced number of power switches and a simpler input transformer than the three-phase equivalent. However, its control is not as straightforward. This paper proposes the use of higher order resonant controllers in the classical control structure of the single-phase PWM rectifier. This ensures zero steady-state tracking error of the reference current at fundamental frequency. A detailed description of the design criteria for the position of the zeros and poles of the controller is given. Experimental results showing the good performance of the single-phase input cells and its proposed control are included
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