International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395 -0056 Volume: 03 Issue: 07 | July-2016 www.irjet.net p-ISSN: 2395-0072 © 2016, IRJET | Impact Factor value: 4.45 | ISO 9001:2008 Certified Journal | Page 1213 Simulation Modelling of Solar And Wind Energy System Nidhi Jindal 1 , Vijay Garg 2 1 P.G Scholar, Electrical Engineering, UIET Kurukshetra University, Hrayana, INDIA 2 Assistant Professor, Electrical Engineering, UIET Kurukshetra University Hrayana, INDIA ---------------------------------------------------------------------***--------------------------------------------------------------------- Abstract - In present situation electrical energy is playing a crucial role in development of any nation. Enormous consumption of resources like coal, oil etc. has created demand for renewable energy. Due to the current requirements for the use of renewable energy as sources of electrical energy, solar energy and wind energy is getting much interest all over the world. This paper consist the simulation modeling of solar and wind energy system using MATLAB. Key Words: PV Panel, MPPT, Boost Converter, Wind Turbine, Permanent Synchronous Generator. 1. INTRODUCTION Today most of the researches in power system are going on the development of conventional energy based power generation. But the issues like international oil crisis, limited availability of non renewable sources and environmental pollution effect forced the researcher to think about an alternative source of energy that can be the solution for the above issues.. So conventional sources of energy acquire growing importance due to its enormous consumption and exhaustion of fossil fuel. The various forms of renewable energy sources like wind energy, solar energy, biogas energy, hydro energy, tidal energy etc. can be a probable solution to this. All these sources of renewable energy are plentifully available in nature, are recyclable and almost available free of cost. Moreover, solar energy and wind energy is the best among all the renewable energy sources. Energy provided by the sun in one hour is equivalent to the amount of energy necessary by the human in one year. Photo voltaic arrays are used in various applications such as battery charging ,water pumping, street lighting in rural town, and grid connected PV systems. Solar energy is non conventional, everlasting and vital source of energy. If used in a suitable way, it has a capacity to satisfy many energy needs of the world. The power from the sun captured by earth is nearly 2631MW. Thus Even though the PV system is modeled to its high capital fabrication cost and small conversion efficiency, the sky rocketing oil prices make solar energy naturally viable energy supply with potentially long- term benefits. [1] Power-Voltage curve of a solar panel, there is an optimal operating point such that the PV provides the maximum possible power to the load. The optimum operating point varied with solar irradiation and cell temperature. This paper describe the Perturb And Observe MPPT algorithm method. Wind power, as an alternative to fossil fuel is exist plentifully, renewable, largely distributed, unpolluted, produces zero greenhouse gas throughout operation and uses diminutive land for its installation.In year 1887 firstly when wind power was used for producing electricity. Later that wind energy was used to generate power at small scale. In the year 1973, when the oil price crisis increases the research of non-petroleum energy and investigators started doing research on wind based power generation for more use. Wind power station can work in both in standalone mode as well as grid connected mode. In wind energy conversion systems (WECSs), the main technologies contain wind turbine technology, permanent magnet synchronous generator (PMSG) modeling technology, power electronics technology and system control technology. This paper describe the control algorithm of direct-driven wind turbine PMSG system and simulated. The direct-drive wind turbine PMSG do not have the gearbox between the wind turbine and rotor shaft, which evade the mechanical power losses occurred by gearbox. Also the elimination of gearbox also helps in decreasing the cost of the system. The kinetic energy of the wind is transformed into mechanical energy by the turbine by mode of shaft and gearbox arrangement as of the different operating speed ranges of the wind turbine rotor and generator. The generator transforms this mechanical energy into electrical energy. Though, as wind is an irregular renewable source, the wind source take out by a wind turbine is therefore not constant. [2] Due to this, the wavering of wind power results in wavered power output from wind turbine generator. From the point of view of utilities, due to the wavering of generator output, it’s not suitable for the generator to be straight connected to the power grid. In order to attain the condition that the generator output power is appropriate for grid-connection, it is required to use a controller to manage the output generated by the wind turbine generator. 2. MODELLING OF PHOTOVOLTAIC CELL Solar cells are joined in series and parallel to build the solar array. Solar cell will generate dc voltage when the sunlight fall on it. Fig. 1 shows the equivalent electrical circuit for a solar cell. Solar cell can be considered as a non-linear current