Synthesis of Single Phase DC/AC Inverters

The paper presents the basic derivation procedure and topological possibilities of creating single phase dc/ac inverters using simple dc/dc converters. It is shown that two separately controlled basic dc/dc converters are sufficient to produce sinusoidal output voltage. The connection of two converters can be generalized into two categories: parallel-power inverter (PPI) and series-power inverter (SPI). New PPI topologies combining different dc/dc converters to form an inverter is introduced and discussed. Owing to redundant power process in SPI, a new family of improved SPI is proposed. Simulation results of the selected converter topology are given to confirm the proposed approach.