Dynamic stability of three-phase grid-connected photovoltaic system using zero dynamic design approach

M. A. Mahmud*, H. R. Pota, M. J. Hossain

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

108 Citations (Scopus)

Abstract

This paper presents a new approach to control the grid current and dc-link voltage for maximum power point tracking and improvement of the dynamic response of a three-phase grid-connected photovoltaic (PV) system. To control the grid current and dc-link voltage, the zero dynamic design approach of feedback linearization is used, which linearizes the system partially and enables controller design for reduced-order PV system. This paper also describes the zero dynamic stability of the three-phase grid-connected PV system, which is a key requirement for the implementation of such controllers. Simulation results on a large-scale grid-connected PV system show the effectiveness of the proposed control scheme in terms of delivering maximum power into the grid.

Original languageEnglish
Article number6235975
Pages (from-to)564-571
Number of pages8
JournalIEEE Journal of Photovoltaics
Volume2
Issue number4
DOIs
Publication statusPublished - 2012
Externally publishedYes

Keywords

  • dynamic stability
  • grid-connected photovoltaic (PV) system
  • maximum power point tracking (MPPT)
  • zero dynamic controller

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