Predictive control of a three-phase neutral-point-clamped inverter

René Vargas, Patricio Cortés, Ulrich Ammann, José Rodríguez, Jorge Pontt

Research output: Contribution to journalArticlepeer-review

429 Citations (SciVal)

Abstract

A new predictive strategy for current control of a three-phase neutral-point-clamped inverter is presented. The algorithm is based on a model of the system. From that model, the behavior of the system is predicted for each possible switching state of the inverter. The state that minimizes a given quality function g is selected to be applied during the next sampling interval. Several compositions of g are proposed, including terms dedicated to achieve reference tracking, balance in the dc link, and reduction of the switching frequency. In comparison to an established control method, the strategy presents a remarkable performance. The proposed method achieves comparable reference tracking with lower switching frequency per semiconductor and similar transient behavior. The main advantage of the method is that it does not require any kind of linear controller or modulation technique, achieving a different approach to control a power converter.

Original languageEnglish
Pages (from-to)2697-2705
Number of pages9
JournalIEEE Transactions on Industrial Electronics
Volume54
Issue number5
DOIs
Publication statusPublished - Oct 2007

Keywords

  • Current control
  • DC-AC power conversion
  • Inverters
  • Predictive control
  • Switching frequency
  • Voltage control

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering

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