Modeling and control of a push-pull converter for photovoltaic microinverters operating in island mode

C. L. Trujillo, D. Velasco, E. Figueres, G. Garcerá, R. Ortega

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

This paper presents the modeling and control of a push-pull converter integrated into a two-stage photovoltaic microinverter operating in island mode without backup energy storage components (batteries). A push-pull small signal model is presented, from which they are derived all transfer functions needed to implement the controllers that regulate the output current, input voltage and output voltage interacting with the MPPT algorithm. A significant contribution of the paper is the proposal of an innovative control structure that simultaneously regulates in island mode both the ac voltage and the dc voltage of the panels, in order to place it in the best operation point. Such operation point is calculated by a specific control loop that interacts with the MPPT algorithm. To validate the proposed concept, simulations in PSIM™ were carried out. © 2011 Elsevier Ltd.
Original languageAmerican English
Pages (from-to)2824-2834
Number of pages2540
JournalApplied Energy
DOIs
StatePublished - 1 Jan 2011

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converters
Electric potential
electric potential
transfer function
modeling
output
backups
energy storage
transfer functions
Energy storage
simulation
Transfer functions
electric batteries
proposals
controllers
Controllers
battery
Maximum power point trackers

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Trujillo, C. L. ; Velasco, D. ; Figueres, E. ; Garcerá, G. ; Ortega, R. / Modeling and control of a push-pull converter for photovoltaic microinverters operating in island mode. In: Applied Energy. 2011 ; pp. 2824-2834.
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Modeling and control of a push-pull converter for photovoltaic microinverters operating in island mode. / Trujillo, C. L.; Velasco, D.; Figueres, E.; Garcerá, G.; Ortega, R.

In: Applied Energy, 01.01.2011, p. 2824-2834.

Research output: Contribution to journalArticle

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