Solar Tracker for Photovoltaic Panels
Yuval Magal & Kobe Bachar.
World energy consumption and the resulting CO2 emissions are increasing substantially and this increase puts in danger the ecological stability of our Earth. Growing scarcity and rising prices of fossil fuels may lead to economical and political instability in many countries in the near future. These problems can be solved by contributing significantly the use of renewable energy resources. The solar radiation effect is articulated and based on hourly average global irradiation data the daily average irradiation is found on an inclined surface; the sun rotation relative to the earth is analyzed in order to calculate the optimum angle in any latitude on the earth surface to receive the maximum annual irradiation. Based on the given data a graphical user interface is modeled by MATLAB, GUI which calculate the energy yield by using data set for different PV module technologies to be presented to the end-users for decision making in PV energy investment as you can see in the illustration of Software Package . Based on power system and power electronic knowledge different design proposals are modeled by using component specification provided by the manufacturers. The design of dual axis tracking photovoltaic collectors in a field involves relationships between the field and collector parameters and solar radiation data. Shading and masking (expressed by the configuration factor) may affect the collector deployment in the field by decreasing the incident energy on the collector plane. The use of many rows of collectors densely deployed, in a given field, increases the field incident energy but also increases the shading). Therefore there is an optimal deployment of collectors in a field yielding, for example, maximum energy, minimum required field area, or other objectives. In this report you will find a software package that provides a dynamic, useful tool for planning and optimization of various solar systems with a uniform construction with variety of photovoltaic collectors. in the illustration below you can see examples for daily run.
The System Design:
figure 1:one row of Photovoltaic Panels.
figure 2:field of Photovoltaic Panels.
The Shade problem
figure 1:Shading by panels in tracking solar field.
figure 2:Shading by panels in tracking solar field as seen in the software.
figure 2: Annual comparison of systems.
we can notice from this chart that dual axis tracking system will produce 26% more energy then fix tilt system
figure 3,4:daily output example.