A Single-Stage Double-Side LCL Resonant Mode Microinverter for grid-tied PV applications

Microinverters can lower installation and maintenance costs in solar systems. A single-stage isolated topology is preferable to reduce component cost. In this study, we present operation waveforms of a novel single-stage LCL resonant microinverter. Findings reveal that this topology can achieve partial ZVS on the primary FETs, full ZVS on the secondary FETs, low reactive power, current source output characteristic and compatible with bidirectional GaN FETs. This topology is validated through both 500kHz 380 W simulation and experimental setup.