Design of syncronized photovoltaic and wind hybrid power generation system for street lighting application

Abstract

Fluctuation of wind energy and solar radiation that is inconsistent become a major challenge to build alternative power generation. The uncertainties to two energy sources is a problem in synchronizing. To build a plant, first performed testing the potential energy that can be harnessed. Testing the potential of wind energy using Weibull distribution methods and estimation of solar energy radiation using a model Annandale, Hargreaves and the proposed model as well as to these three models were tested statistically using MATLAB simulation. Wind energy and solar radiation are fluctuating and inconsistent results in the voltage generated are not constant. For the voltage is not constant can be fixed using a buck-boost converter. Buck-boost converter is a dc-dc converter that can increasing and decreasing the voltage. Design buck-boost converter uses a combination of electronic components such as inductors, capacitors, diodes, XL6009, TIP2955 and LM7815. Of a difficulty to combine the two plants directly with a voltage are not constant. Merger of wind energy and solar radiation using a microcontroller, which serves to connect or disconnect the two energy sources to the electrical power system, if one or two sources of energy have a voltage less than or greater than the voltage is specified, then the microcontroller works to break source energy to the battery. If one or both energy sources have the same voltage with the voltage specified, then the microcontroller to work connecting the energy source to the battery. Based on MATLAB simulation that the potential for wind energy and solar radiation in Perlis show that wind energy is low at maximum wind speed of 1.10 m/s in PDF 0.44 (in 2011) and a maximum wind speed of 1.11 m/s in PDF 0.51 (2014), while the results of estimation and statistical tests (CRM, RMSE and e%) for solar radiation using MATLAB shows that the proposed model (combination Hargreaves and Annandale model) is better than model Hargreaves and Annandale and energy of solar radiation is very good with solar radiation average 1,316 wh/m2 (above the standard value of 1,000 wh/m2). Design and development of buck-boost converter with the addition of components Inductors 35.5 μH and capacitors 220 μF can increasing and decreasing the voltage of the source of wind energy and solar radiation. Implementation buck-boost converter in the synchronization system wind energy (WP) and photovoltaic (PV) is used for charging batteries. The battery charging of 5-6 hours and discharging the battery of 28 hours.