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Operation, Control & Management of Active Power for a Grid Connected Hybrid System

Sakshi jain, sparsh chawla, Shilpi

This paper evaluates the performance of a grid connected hybrid system. Renewable energy is currently widely used. One of these resources is solar energy. The hybrid system composed of a Photovoltaic (PV) array and a Proton exchange membrane fuel cell (PEMFC) is considered. The PV array acquaints with an improved maximum power point tracking (MPPT) technique to a grid connected hybrid system to continuously deliver the highest power to the load when variations in irradiation and temperature occur. The disadvantage of PV energy is that the PV output power depends on weather conditions and cell temperature, making it an uncontrollable source. Furthermore, it is not available during the night. In order to overcome these inherent drawbacks, alternative sources, such as PEMFC(Proton Exchange membrane fuel cell) is installed in the hybrid system. By changing the FC output power, the hybrid source output becomes controllable. The hybrid source has two control modes: 1) unit-power control (UPC) mode and 2) feeder-flow control (FFC)mode. The coordination of two control modes, the coordination of the PV array and the PEMFC in the hybrid system is presented in this paper