Asynchronous Distributed Generation System Based on Asymmetrical Cascaded Multilevel Inverter

An asynchronous distributed generation (DG) single-phase system is proposed. It is based on an asymmetrical cascaded multilevel inverter with 19 levels and it is supplied by asynchronous voltage sources. It is possible to operate continuously the proposed GD system during the grid-connected or the stand-alone modes. Details about its operation modes are presented. A prototype of the proposed GD system has been implemented on a fixed-point DSP TMS320F2812. An injection of only active power into the grid utility and an uninterrupted load supply have been pursued. Simulation and experimental results presents the performance of the proposed GD system.