A modified active flyback-forward converter derived isolated three-phase micro-inverter with Artificial Neural Network (ANN) [articol]

Abstract

A dual boost Modified Active Clamp Flyback Forward Converter (MACFFC) based isolated micro-inverter is presented to provide high boosting gain with reduced switching stress and duty ratio. The proposed system is designed to boost the 24 V PV array output voltages into 400 V, 50 Hz AC which is required for the synchronization of grid. Normally, the flyback boost converter derived micro-inverters offers enhanced power transfer capability between the PV array and grid. The active clamp flyback converter provides single stage boosting with extremely high duty ratio. The proposed system is construed with an inductors and three winding coupled inductor, Voltage Doubler (VD) rectifier and full bridge Voltage Source Inverter (VSI) to enhance the power transfer capability and to increase the conversion efficiency by reducing active and passive components. In addition, a dual input dual output Artificial Neural Network (ANN) is adopted to provide the wide range of control over the transfer of real and reactive power and to provide low Total Harmonic Distortion (THD) at the load. The results of the simulated and experimental models are presented to validate the power transfer capability of the proposed three-phase micro-inverter.