Microinverter for wireless charging

Abstract

This paper presents a multi stages grid connecting single phase micro-inverter for photo voltaic utilisation. Conventional single switch flyback inverter suffers from high voltage transients across switch, which leads to a significant reduction in efficiency, the stress on the device causes an increase in cooling arrangements and also underutilization of the device as far as the ratings are concerned. The proposed topology will have an additional switch and two clamped diodes at the primary side so as to have a reduction in the switch stress which increases the efficiency. Converter is operated in Discontinuous conduction mode to have a simple control and to avoid the stability issues. Simulation results authenticate the concert of the proposed method.