Abstract
The changes in the intensity of solar radiation cause the electrical power produced by solar panels to be not optimal. The solar panel position control system to the position of the solar is an effort to overcome this problem. There are four Light Dependent Resistor (LDR) sensors placed on the sides of the four cardinal directions. The difference in the intensity of solar radiation received by each sensor causes the position of the solar panel to turn perpendicular to the position of the solar. The control method used is fuzzy logic control with three membership functions. The controlled variables are pitch angle and yaw angle in an active two-axis solar tracking system. Input fuzzy logic control is an error, and output is PWM. The results of the performance of the pitch angle control system produce settling time for 10 s and error steady-state obtained by 0.080 %, while for the yaw angle control system produces settling time for 13 s and steady-state error is obtained at 0.038 %. The existence of a control system resulted in an increase in the percentage of power above 30 % with a power difference of 7.49 W to a fixed panel.
Highlights
The daily and seasonal solar radiation are essential issues in the utilization of solar energy
The first method called solar tracking system, which the direction of solar panels will change due to the solar radiation position [2,3,4,5]. The purpose of this method is to optimize the electrical power received by solar panels when capturing solar radiation by controlling the position of the solar panel against the position of the solar automatically
The set point testing is done to determine the time required for the pitch and yaw angle to reach the set point until it reaches a steady state
Summary
The daily and seasonal solar radiation are essential issues in the utilization of solar energy. The direct usage of solar energy faces a major constrain, namely the limited time when the solar emits massive radiation so its function could not be continued. The first method called solar tracking system, which the direction of solar panels will change due to the solar radiation position [2,3,4,5]. The purpose of this method is to optimize the electrical power received by solar panels when capturing solar radiation by controlling the position of the solar panel against the position of the solar automatically
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