Indirect Matrix Converter-Based Grid-Tied Photovoltaics System for Smart Grids

Thomas Geury, Sonia Pinto, Johan Gyselinck, Patrick Wheeler

Research output: Contribution to journalArticle

1 Citation (Scopus)
29 Downloads (Pure)

Abstract

This paper proposes an Indirect Matrix Converter (IMC)-based grid-tied Photovoltaic (PV) system for Smart Grids (SGs). The PV array injects current in thedc link’of the IMC through an inductive link, and is connected to the SG with shunt and series connections, allowing for the compensation of current-and voltage-related Power Quality (PQ) issues, respectively, for the sensitive loads and the SG connection. A direct sliding mode-based controller is proposed to guarantee nearly sinusoidal currents in the connection to the SG, and sinusoidal voltages guaranteeing compliance with international standards, when supplying the sensitive loads. Additionally, a novel control approach for thedc link’voltage is synthesised to allow for the control of both the PV array current and the power flow to the SG. To guarantee the semiconductors safe commutation an asynchronous commutation strategy is derived. Simulation and experimental results show that the proposed system significantly improves PQ in the SG, minimizing the total harmonic distortion of the currents injected in the SG, and guaranteeing the quality of the voltage supplied to the sensitive loads, even in the occurrence of voltage sags or overvoltages.
Original languageEnglish
Article number5405
Pages (from-to)5405-5423
Number of pages18
JournalEnergies
Volume13
Issue number20
DOIs
Publication statusPublished - 16 Oct 2020

Keywords

  • Indirect Matrix Converter
  • photovoltaic systems
  • Power Quality
  • Smart Grids
  • sliding mode control
  • Unified Power Quality Conditioner

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