Diagnosing Malfunctions in Grid-Connected Photovoltaic Single-Phase Fly-back Inverters

A new defect diagnostic method is predicted based on the features of staggered flyback photovoltaic grid-connected inverter topologies. Because it operates in interleaved continuous mode, the micro-inverter is a single-inverse device. Work and rest take turns in the alternating intermittent mode of operation. All inverter power levels may be controlled with the same method. And since the quality of the grid-connected current is dependent on the inverter's performance, this might boost its effectiveness across the board. An expression for the relationship between the reference current and grid-connected current is generated.