Single Stage Reconfigured Inverter Topology for Solar Power Integrated AC/DC loads

This paper introduces a restructured model of a single phase topology which contains a combined AC/DC solar powered residential load. It consist of a single phase topology with the distinct advantage of performing DC/DC, DC/AC and grid tie modes of operation. The proposed system can be utilized for both AC and DC types of loads. It helps to reduce power loss by avoiding needless power conversions. It employes efficient uses of switching devices to integrate solar photovoltaic distributed generation in conventional grid. Also it distinguishes load type (AC or DC )and accordingly connects the appropriate supply to it. One of the major advantage of such system is that harmonic profile of the system as a whole improves as DC loads are isolated to DC supply side and rest to AC supply side. By identifying major harmonic producing appliances, we can substitute them with their DC counterpart and connecting them to DC source, thus eliminating harmonic contributed by them to the system. This dissocitation of loads reduces the burden on AC supply thus less harmonics are produced. Simulated results of such a system is implemented using MATLAB simulink. The obtained results are then validated with hardware implementation of the proposed topology.