Nezamuddin, OmarCrespo, Jonahdos Santos, Euzeli C., Jr.2017-09-212017-09-212016-06Nezamuddin, O., Crespo, J., & dos Santos, E. C. (2016, June). Design of a highly efficient microinverter. In Photovoltaic Specialists Conference (PVSC), 2016 IEEE 43rd (pp. 3463-3468). IEEE. https://doi.org/10.1109/PVSC.2016.7750310https://hdl.handle.net/1805/14150This paper proposes a grid-tied single-phase photovoltaic (PV) microinverter consisting of five-level four-switch (5L-4S) DC-AC converter fed by an isolated fly-back DC-DC converter. The microinverter utilizes a split-coil inductor to produce five levels of pulse width modulation (PWM) compared to the three levels of PWM using conventional four-switch topologies. These implementations reduce losses by up to 39% compared to a conventional topology. The results show that the proposed design improves performance throughout the switching frequency spectra with various loads. The theoretical expectations are validated with simulation and experimental results.enPublisher Policymicroinverterenergy conversionphotovoltaic systemConference proceedings