Zero-steady-state-error input-current controller for regenerative multilevel converters based on single-phase cells

Pablo Lezana, César A. Silva, José Rodríguez, Marcelo A. Pérez

Research output: Contribution to journalArticlepeer-review

85 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)733-740
Number of pages8
JournalIEEE Transactions on Industrial Electronics
Issue number2
Publication statusPublished - Apr 2007


  • Multilevel converter
  • Pulsewidth-modulation (PWM) rectifiers
  • Resonant controller

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering


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