Abstract
In recent years, light emitting diode (LED) has changed the scenario of residential and commercial lighting. Day lighting applications has huge scope for power saving by use of solar photovoltaic (PV) based LED lighting with DC distribution system. In this paper, a hybrid system with combination of PV and grid power has been presented. In proposed system, PV source and grid power sourced converter (GSC) operate in parallel and both are directly connected to load. GSC is mainly used for supplying the gap between the maximum PV generation and load demand. Power converter is realised using single stage high power factor grid-source converter (GSC). Maximum power point (MPP) of PV source is tracked by incremental conductance (INC) algorithm and used as feedback to control power from utility bus to load. Proposed topology is validated using 150 VA laboratory prototype and results of experimentation are given in the paper.
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