Regenerative medium-voltage AC drive based on a multi-cell arrangement with minimum energy storage requirements

Marcelo A. Pérez, José R. Espinoza, José R. Rodríguez, Pablo Lezana

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

4 Citations (Scopus)

Abstract

Multi-cell power circuit topologies have probed to be an effective alternative to medium-voltage ac drives. Commercial units are built up based on modular units, namely cells, which are composed of a three-phase diode-based front-end rectifier, a dc link electrolytic capacitor, and a single-phase full-wave voltage-source inverter. The main advantage is the improved power quality at both ac system and motor sides. However, two drawbacks are present in these configurations. These are: (a) the single-phase operation of the inverter in each cell generates a large second current harmonic that is injected back into the dc link capacitor, thus, a large electrolytic capacitor has to be used in order to guarantee a reduced voltage ripple across it; (b) the three-phase diode-based front-end rectifier does not provide the regenerative operating mode as required, for instance, by down-hill belt conveyors in minery applications, where this operating mode is the normal one. This paper proposes to replace the diode-based front-end rectifier by an active front-end rectifier and a novel control strategy in order to overcome the aforementioned drawbacks. In fact, the active front-end rectifier allows the topology to regenerate and the control strategy removes the large second current harmonic from the dc link capacitor, thus reducing its size. Both features are achieved without any penalties in the quality of the waveforms. Simulated results confirm the theoretical considerations.

Original languageEnglish
Title of host publicationISIE 2002 - Proceedings of the 2002 IEEE International Symposium on Industrial Electronics
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages857-862
Number of pages6
ISBN (Print)0780373693, 9780780373693
DOIs
Publication statusPublished - 2002
Event2002 IEEE International Symposium on Industrial Electronics, ISIE 2002 - L'Aquila, Italy
Duration: 8 Jul 200211 Jul 2002

Publication series

NameIEEE International Symposium on Industrial Electronics
Volume3

Other

Other2002 IEEE International Symposium on Industrial Electronics, ISIE 2002
Country/TerritoryItaly
CityL'Aquila
Period8/07/0211/07/02

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Control and Systems Engineering

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