Procedure to match the dynamic response of MPPT and droop-controlled microinverters

Ruben B. Godoy, Douglas B. Bizarro, Elvey T. De Andrade, Jurandir De O. Soares, Pedro E. Ribeiro, Marcio L.M. Kimpara, Leonardo A. Carniato, Joao O.P. Pinto, Kamal Al-Haddad, Carlos A. Canesin

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Scopus citations

Abstract

Photovoltaic systems require the implementation of maximum power point tracking (MPPT) algorithms to maximize power extracted from these systems. However, the application of such algorithms in grid-connected droop-controlled systems is hampered by differences in the dynamic responses of the respective techniques. In this context, this study presents the development of a strategy that enables a push-pull converter controlled by MPPT and a low power plug and play grid-connected inverter governed by droop-control to operate stably even under variations in solar radiation and without any battery storage bank. The goal is achieved based on two approaches: i) designing the DC link capacitor properly; ii) using a control loop in order to adapt the droop curves in accordance with the available input power. Theoretical analysis and experimental results have proven the viability of the approach.

Original languageEnglish
Title of host publication2015 IEEE Energy Conversion Congress and Exposition, ECCE 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages4188-4193
Number of pages6
ISBN (Electronic)9781467371506
DOIs
StatePublished - Oct 27 2015
Event7th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2015 - Montreal, Canada
Duration: Sep 20 2015Sep 24 2015

Publication series

Name2015 IEEE Energy Conversion Congress and Exposition, ECCE 2015

Conference

Conference7th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2015
Country/TerritoryCanada
CityMontreal
Period09/20/1509/24/15

Keywords

  • capacitor sizing
  • droop-controlled inverters
  • photovoltaic systems

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