Investigation of microinverter based on the two-switch DC-DC flyback converter topology

International Conference on Renewable Energies and Energy Efficiency 2017

Iysaouy, L. El^1,4 ; Bielskis, E.^2 ; Lahbabi, M.^1 ; Baskys, A.^3 ; Oumnad, A.^4

Signals, Systems and Components Laboratory, Sidi Mohamed Ben Abdellah University FST, Fez, Morocco^1

Center for Physical Sciences and Technology, Sauletekio al.3, Vilnius

LT-10257, Lithuania^2

Department of Computer Engineering, Vilnius Gediminas Technical University, Naugarduko St. 41, Vilnius

LT-03227, Lithuania^3

Department of Electrical Engineering, Mohamed v University, EMI, Rabat, Morocco^4

关键词: Electric grids;    Flyback converters;    Flyback transformer;    High-efficiency;    Micro inverters;    Number of components;    Output filters;    Total harmonic distortion (THD);   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/161/1/012024/pdf
DOI  :  10.1088/1755-1315/161/1/012024

来源: IOP

【 摘 要 】

This paper presents an investigation of a novel scheme of the single stage flyback microinverter based on two-switch [1]. The purpose of this topology of microinverter is to transform the DC power generated by the DC voltage input to a standard electric grid AC voltage. The single stage two-switch DC-DC flyback microinverter for the case CL output filter ensures the isolation between the DC power sources and the AC sources by a flyback transformer; has high efficiency (more than 96%) if the parameters of dual two-transistor stage: M1 to M4 are chosen correctly and Total Harmonic Distortion THD less than 5 %. However, the design of this microinverter is characterized by a low number of components.