Abstract
The dynamic behaviour and simulation results of a stand – alone hybrid power generation system comprising of a wind turbine, solar array and battery storage are presented in this Paper. The objective of this study is to review the state of the simulation, optimization and control technologies of the stand-alone hybrid solar–wind energy system with the inclusion of battery storage. The hybrid system used for the simulation consisted of a 100W wind turbine, 150W solar array and a 70Ah lead acid battery. A Fuzzy Logic Maximum Power Point Tracker (MPPT) controller was applied to the variable–speed, fixed–pitch small scale wind turbine while maximum power point tracking (MPPT) method based on Perturb & Observation (P&O) searching algorithm was applied to the stand–alone solar photovoltaic system. MATLAB SimulinkTM 7.2 / Simpower system software environment was utilized to accomplish and simulate individual wind and PV dynamic models of the hybrid system. The public domain software, Hybrid Optimization Model for Electric Renewables (HOMER) produced by the National Renewable Energy Laboratory was used to optimize the hybrid system with data taken from a feasibility study together with meteorological data obtained from a selected area in Sri Lanka ENGINEER, Vol. 48, No.04, pp. 1-15, 2015
Highlights
Solar power and wind power are extensively utilized throughout the world specially for powering rural economies [1].Photovoltaic technology has become a relatively cost effective method for rural areas where the main grid is not available
As a remedy for this problem, in this study, a photovoltaic system combined with a wind generation system is suggested to reduce zero– power intervals
A solar/wind hybrid power system (HPS) will minimize the impacts of intermittency associated with these sources
Summary
Solar power and wind power are extensively utilized throughout the world specially for powering rural economies [1].Photovoltaic technology has become a relatively cost effective method for rural areas where the main grid is not available. Solar power and wind power are extensively utilized throughout the world specially for powering rural economies [1]. The variation of the intensity of solar energy falling on earth‟s surface with time and the impacts of the environmental conditions are challenges faced in obtaining a continuous electricity supply from the system. The generation of electricity from wind energy is facing similar challenges due to diurnal and annual wind speed variations. As a remedy for this problem, in this study, a photovoltaic system combined with a wind generation system is suggested to reduce zero– power intervals. Sunny days are usually quiet and not windy. It is usually windy on cloudy days and at night. A solar/wind hybrid power system (HPS) will minimize the impacts of intermittency associated with these sources
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