Abstract: This paper presents a multifunction grid connected system using partial power converter .The proposed micro inverter employs a two-stage topology with active- clamped current-fed push pull converter cascaded with a full bridge inverter .This system can operate in grid connected mode to feed power to the grid with a programmable power factor .This presents a multi-loop control scheme with programmable capability for achieving multiple functions. This implements a partial power converter for DC-DC converter stage. In addition, the proposed control scheme embedded a multi-module parallel capability that multiple MI modules can be paralleled to enlarge the capacity with autonomous control in all operation modes.

Keywords: Autonomous control of inverter, active-clamped current-fed push-pull converter, zero feeding power

| DOI: 10.17148/IJIREEICE.2019.7523