Control of a three-phase AC/DC VIENNA converter based on the sliding mode loss-free resistor approach

Freddy Flores-Bahamonde, Hugo Valderrama-Blavi, Luis Martínez-Salamero, Javier Maixé-Altés, Germain García

Research output: Contribution to journalArticlepeer-review

33 Citations (Scopus)


The three-phase VIENNA rectifier supplying a regulated DC bus in a micro-grid architecture is controlled in this study by means of a sliding-mode regulation loop,which imposes a loss-free resistor (LFR) behaviour in each phase for power factor correction. Assuming equal parameters per phase and that the intermediate node between the output capacitors of the DC link is the neutral point of the AC generator, the rectifier can then be modelled as a tetra-port LFR with three decoupled resistive input ports and one output port characterised by a power source representing the input power absorbed by the rectifier. After demonstrating that the resulting sliding dynamics are globally stable, the control is analogically executed, this only requiring an analogue multiplier, several operational amplifiers and some auxiliary digitally implemented logic circuitry. Experimental results for different power levels and frequencies supplied by a low-power wind generator are in perfect agreement with the theoretical predictions.

Original languageEnglish
Pages (from-to)1073-1082
Number of pages10
JournalIET Power Electronics
Issue number5
Publication statusPublished - 2014
Externally publishedYes

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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