Buck-Boost Single-Stage Microinverter for Building Integrated Photovoltaic Systems

Derick Mathew, Mohamed Emad Farrag, Rani Chinnappa Naidu, Rajesh Kumar Muthu, A Sivaprakasam and P Somasundaram
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Derick Mathew: Electrical and Electronics Engineering, Kerala Technical University, Kerala 695016, India
Mohamed Emad Farrag: School of Engineering and Built Environment, Glasgow Caledonian University, Glasgow G4 0BA, UK
Rani Chinnappa Naidu: School of Electrical Engineering, VIT University, Tamil Nadu 600127, India
Rajesh Kumar Muthu: School of Electrical Engineering, VIT University, Tamil Nadu 600127, India
A Sivaprakasam: Department of Electrical and Electronics Engineering, Anna University, Tamil Nadu 600025, India
P Somasundaram: Department of Electrical and Electronics Engineering, Anna University, Tamil Nadu 600025, India

Energies, 2021, vol. 14, issue 23, 1-21

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.

Keywords: buck-boost microinverter; building integrated photovoltaic; discontinuous conduction mode (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
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