Grid-connected isolated PV microinverters: a review

Hasan, Rasedul, Mekhilef, Saad, Seyedmahmoudian, Mehdi and Horan, Ben 2017, Grid-connected isolated PV microinverters: a review, Renewable and sustainable energy reviews, vol. 67, pp. 1065-1080, doi: 10.1016/j.rser.2016.09.082.

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Title Grid-connected isolated PV microinverters: a review
Author(s) Hasan, Rasedul
Mekhilef, Saad
Seyedmahmoudian, Mehdi
Horan, BenORCID iD for Horan, Ben
Journal name Renewable and sustainable energy reviews
Volume number 67
Start page 1065
End page 1080
Total pages 16
Publisher Elsevier
Place of publication Amsterdam, The Netherlands
Publication date 2017-01
ISSN 1364-0321
Keyword(s) microinverter
photovoltaic system
grid-connected inverter
Summary Galvanic isolation in grid-connected photovoltaic (PV) microinverters is a very important feature concerning power quality and safety issues. However, high-frequency transformers and high switching losses degrade the efficiency of the isolated types of microinverters. Recently, several isolated topologies were proposed to increase the efficiency and lifetime of PV converters. This paper presents a comprehensive review of the most recent isolated topologies of PV microinverters. These topologies are categorized into two groups in terms of their power processing stages: 1) single-stage microinverter and 2) multi-stage microinverter. Various topologies are presented, compared, and scrutinized in terms of the power losses at different stages, control techniques, position of the decoupling capacitor, and cost analysis. Recommendations are provided to improve the existing topologies and select the suitable control techniques to obtain a clear picture of the framework for next-generation isolated PV microinverters.
Language eng
DOI 10.1016/j.rser.2016.09.082
Field of Research 090607 Power and Energy Systems Engineering (excl Renewable Power)
Socio Economic Objective 0 Not Applicable
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2016, Elsevier
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