International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395 -0056 Volume: 2 Issue: 9 | Dec-2015 www.irjet.net p-ISSN: 2395-0072 © 2015, IRJET ISO 9001:2008 Certified Journal Page 2004 MODELING OF PHOTOVOLTAIC CELL- FUEL CELL HYBRID SYSTEM: FOR UNINTERRUPTED POWER MANAGEMENT Gaurav Kumar 1 , Dr R. Vijaya Santhi 2 , 1 MTech scholar, Dept. of Electrical Engineering, Andhra University, Andhra Pradesh, India 2 Assistant Professor, Dept. of Electrical Engineering, Andhra University, Andhra Pradesh, India ---------------------------------------------------------------------***--------------------------------------------------------------------- Abstract - This paper deals with the details of a hybrid model of a solar and fuel cell. The load supplied is based on the photovoltaic panel, while the fuel cells are back-up for compensating possible power load shortage. The simulation includes all realistic components of the system, in this thesis power delivered by the combine system component is compared with each other and various conclusions are drawn. This paper describe of solar-fuel hybrid system for supplying electricity to power grid. In this thesis solar power module and its modeling is also simulated through MATLAB. . Key Words: Solar power, fuel cell, hybrid generation energy, grid etc… 1. INTRODUCTION Hybrid systems, as the name implies, combine two or more renewable or non-renewable modes of electricity generation together, usually using renewable technologies such as solar photovoltaic (PV) and fuel cell. Non - Renewable energy sources are fast depleting source and are not sustainable in nature. Apart from that present topographical )ndia doesnǯt have grid connectivity in every place. This thesis deals with the introduction of Hybrid power sustainable system comprising of solar power system and fuel cell system connected to feeder. Although photovoltaic panels are used as popular renewable energy sources, major problems they encounter depending on power production are with solar irradiation. Hence this problem can be solved by using fuel cell in this thesis. 2. SOLAR POWER SYSTEM The solar system is developed and designed with the series and parallel connection of solar cell or photovoltaic cell. A Solar cell is a device that converts the energy of sunlight into electricity or flow of electron. The effect by which energy of sunlight is converted into flow of electron is called photoelectric effect. A single solar cell produces only about 0.5V however 12 V panel about 25inches by 54 inches will contain 36 cells wired in series to produce about 17 volts peak output. Nomenclature Vph is the output of photovoltaic cell I is current output of PV cell,current source Iph represents the cell photocurrent. Rsh and Rs are the intrinsic shunt and series resistance of the cell A = B is an ideality factor = 1.6 k is Boltzman constant = 1.3805 × 10-23 J/K Isc is the cell short circuit current at 250C and 1kW/m2 Ki is cell short circuit current temperature coefficient, Tr is the cell reference temperature, λ is the solar isolation in kW/mʹ Irs is the reverse saturation current at a reference temperature, Eg is the band-gap energy 1.1eV Voc is the PV open circuit voltage at the reference temperature 2.1 PV cell model General model: A general mathematical description of the I-V output characteristics of a PV cell has been studied. As shown in figure 1, the equivalent circuit of the general model is composed of photo current source, diode, parallel resistor expressing the leakage current and series resistor describing the internal resistance to the current flow Fig 1The equivalent circuit of photo voltaic cell Characteristic equation for the pv cell is given by I=Iph-Is(exp[ ]-1)-( ) (1)