Controlling a grid-connected T-type three level inverter system using a sliding mode approach

V. Fernão Pires, Duarte M. Sousa, João Francisco Alves Martins

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Citations (Scopus)

Abstract

In this work a multilevel inverter based grid connected photovoltaic system is presented. It is used a T-type multilevel inverter. This inverter is based on a classic three-phase voltage source inverter. However, in order to increase the number of voltage levels, three extra bi-directional switches are used. These switches are connected between the three-phase terminals of the inverter and a common point of the two DC-capacitors. The inverter is connected to the photovoltaic panel through a DC/DC converter and to a three-phase transformer. The DC/DC converter and the multilevel inverter are controlled using a sliding mode controller. At the output of the controller associated to the multilevel inverter is used a vectorial modulator. This modulator will also be used to ensure the DC voltage balancing of the capacitors connected to the inverter. A maximum power point tracking algorithm associated to the photovoltaic generator is also presented. Several results are presented in order to confirm the characteristics of the proposed system.
Original languageEnglish
Title of host publicationProceedings of the IEEE International Symposium on Industrial Electronics
Pages2002-2007
DOIs
Publication statusPublished - 2014
EventIEEE 23rd International Symposium on Industrial Electronics (ISIE), 2014 -
Duration: 1 Jan 2014 → …

Conference

ConferenceIEEE 23rd International Symposium on Industrial Electronics (ISIE), 2014
Period1/01/14 → …

Keywords

  • photovoltaic system
  • sliding mode controller
  • T-type
  • three level inverter

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    Fernão Pires, V., Sousa, D. M., & Martins, J. F. A. (2014). Controlling a grid-connected T-type three level inverter system using a sliding mode approach. In Proceedings of the IEEE International Symposium on Industrial Electronics (pp. 2002-2007). [6864924] https://doi.org/10.1109/ISIE.2014.6864924