Dual-inverter for grid-connected photovoltaic system: Modeling and sliding mode control

V. Fernão Pires, João Francisco Alves Martins, Chen Hao

Research output: Contribution to journalArticlepeer-review

64 Citations (Scopus)


A fast and robust control strategy for a multilevel inverter in grid-connected photovoltaic system is presented. The multilevel inverter is based on a dual two-level inverter topology. There are two isolated PV generators that feeding each bridge inverter. The output of each inverter is connected to a three-phase transformer. The active and reactive powers flowing into the grid are controlled by a sliding mode algorithm. An alfa-beta space vector modulator is also used. The inverters DC voltages are also controller by a sliding mode controller. In this way, a fast and robust system controller is obtained. Several test results are presented in order to verify the effectiveness of the proposed system controller. (C) 2012 Elsevier Ltd. All rights reserved.
Original languageEnglish
Pages (from-to)2106-2115
Number of pages10
JournalSolar Energy
Issue number7
Publication statusPublished - Jul 2012


  • Sliding mode controller
  • Vector modulator
  • Dual inverter
  • Photovoltaic system
  • Power converter


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