Authors: Kapil Dev Sharma, Sumit Saroha, Sunil Kumar
The interconnection of both conventional and non conventional energy sources with grid is an important aspect of power system to meet the growing demand of electricity in present day scenario. This paper proposed a Solar PV array system with and without grid interconnected in which the Maximum Power Point Tracking algorithm is used for extracting maximum available power from PV module. Two operating control modes unit-power control (UPC) mode and feeder-flow control (FFC) mode has been considered. In UPC mode load variations are compensated by the main grid because the hybrid source output is regulated to reference power. Whereas in FFC mode the feeder flow is regulated to a constant, the extra load demand is picked up by the hybrid source. The purposes of the proposed operating strategy presented are to determine the control mode, to minimize the number of mode changes, to operate PV at the maximum power point, and to operate the FC output in its high-efficiency performance band. It is found that the proposed operating algorithm is a simplified and flexible method to operate a hybrid source in a grid-connected micro grid.
Fuel cell, Solar power, Micro grid, Unit power control (UPC), Maximum Power tracking algorithm.
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