Abstract:
Special requirements on the system structure, components selection and converter topology of
the Module Integrated Inverters (Converters) for PV applications are considered. Under discussion are the
features of usage of different converter topologies in photovoltaics, including buck, boost, forward, flyback
converters. Examples are studied of using Silicon Carbide junction field-effect transistors in PV inverters and
their influence on the inverter schematics. The single-stage Module Integrated Inverter (Solar Microinverter
SMI-01) has been designed and fabricated in the frame of this work. The developed microinverter uses the
interleaved flyback topology and is intended for integration in PV modules up to 240W. It has the following
parameters: input voltage - 30 ÷ 48V, maximum system voltage - 600V, efficiency - 96%, output current
THD - 4.5%, input/output isolation, dimensions - 220 x 150 x 56 mm. Microinverter is traced on the 4-layer
PCB and placed in the IP65 case.