Buck-boost single-stage microinverter for building integrated photovoltaic systems

Derick Mathew*, Mohamed Emad Farrag*, Rani Chinnappa Naidu*, Rajesh Kumar Muthu, A. Sivaprakasam, P. Somasundaram

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

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Abstract

Microinverters for Building Integrated Photovoltaic (BIPV) systems must have had a small number of components, be efficient, and be reliable. In this context, a single-phase Buck-Boost Single-stage Microinverter (BBSM) for grid-connected BIPV systems is presented. The concept of topology is extracted from the buck-boost converter. The leakage current in the system is kept under control. It uses an optimal number of active and passive components to function at a high-efficiency level. The suggested topology provides a high level of reliability due to the absence of shoot-through problems. To validate the findings, a simulation in combination with an experimental system for a 70 W system is developed with the design approach. The efficiency of the microinverter, total harmonic distortion of the grid current are measured as 96.4% and 4.09% respectively. Finally, a comparison study has indicated the advantages and disadvantages of the suggested inverter.
Original languageEnglish
Article number7854
Number of pages21
JournalEnergies
Volume14
Issue number23
Publication statusPublished - 23 Nov 2021

Keywords

  • buck-boost microinverter; building integrated photovoltaic; discontinuous conduction mode

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