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Grid Synchronization and Islanding Detection Methods for Single-Stage Photovoltaic Systems

Department of Information Engineering (DINFO), University of Florence, 50139 Florence, Italy
Energies 2020, 13(13), 3382; https://doi.org/10.3390/en13133382
Received: 29 April 2020 / Revised: 14 June 2020 / Accepted: 28 June 2020 / Published: 1 July 2020
(This article belongs to the Special Issue Grid-Connected PV Plants)
Synchronization and islanding detection represent some of the main issues for grid-connected photovoltaic systems (PVSs). The synchronization technique allows to achieve PVS high power factor operation and it provides grid voltage monitoring. The islanding detection control function ensures safe operation of the PVS. Focusing on low-power single-stage PVSs, in this study the most adopted and the highest performance synchronization and islanding detection methods are discussed. The role of the synchronization system is fundamental to detect the grid conditions, for the islanding detection purpose, and to manage the reconnection to the grid after a PVS trip. Hence a combined review is advantageous. View Full-Text
Keywords: photovoltaic systems; synchronization systems; phase-locked loops; islanding detection methods photovoltaic systems; synchronization systems; phase-locked loops; islanding detection methods
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Mastromauro, R.A. Grid Synchronization and Islanding Detection Methods for Single-Stage Photovoltaic Systems. Energies 2020, 13, 3382.

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