Efficient Power Management Strategies for Inter-grid Connected PV-FC Hybrid System

The combination of photo voltaic panel or array and fuel cell is called as a hybrid system and it is presented in this paper. Two modes of operation of this system are feeder-flow control (FFC) mode, unit-power control (UPC) mode. Due to the sudden or regular changes of temperature and irradiation the solar cell will not delivery the constant power. So a technique called Maximum Power Point Technique (MPPT) is adopted. So that makes the PV uncontrollable. For solving these drawbacks we consider extra distribution energy sources i.e. fuel cell. Then this combination of fuel cell with PV array called hybrid system. Then the hybrid system can be controllable by changing the fuel cell (FC) output with the help of PV array output. Finally the hybrid system reference output value is achieved. By doing different flexible operation changes in operating method the FC and PV operating performance is improved. The logic we implemented in this work a given load driven by combination of solar, fuel and grid. A priority the total load met by PV solar first verified it will be supplied ok otherwise fuel cell is added still it is not sufficient grid is connected. In all cases simulated system load maintain voltage and frequency at specified