Design And Development Of Solar Motion Simulation Platform Based On Atmega16

Nowadays,photovoltaic power generation has become the focus for many research group to develop at home and abroad, which makes the study of solar tracking become a continuous hotpot. However, there are no uniform standards in the detection accuracy of the solar tracker. In order to provide a repeatable test platform for tracking solar system, thereby improving the utilization efficiency of solar energy, a solar motion simulation platform was designed. The platform Horizon coordinate system was adopted, in which the sun’s position was broken down into elevation angle and azimuth, was adopted to build a two-dimensional system. Atmega16 was used as a controller to control stepper motor to simulate the sun trajectory in the system. The system can realize the demonstration via the upper computer, to achieve a comprehensive forecast of the sun position and reproduce.Based on the sun theory, the sun’s trajectory was analyzed and the trajectory of the sun was broken down into two elevation angle and azimuth parameters in this paper. And then, the conclusion was drawn that the sun speeds are different in different regions at the same time. Hardware parts contain two aspects: the build of experiment platform according to the sun trajectory and the design of hardware circuit. According to the system requirements to design experimental platform, a sun motion simulation platform was built by selected components. The controller and auxiliary circuits formed the hardware together. The software parts mainly consisted of lower computer control program and PC control interface. MCU overall control ideas was described in lower computer control programming, through the motor speed for analog sources with moving at different speeds per hour, and the program flow chart was drawn. In the PC, the control interface was designed so that it can communicate with lower computer, uploading data could display the azimuth and elevation angle curve at the interface, and the data was saved. Finally, through physical testing, the desired function, which an analog source in accordance with expected trajectory, was achieved by the platform, the design of the platform was proved to be reliable. Comparison of the data with the theoretical value and PC data obtained, the error is calculated within the allowable range, indicating experimental platform designed to meet system requirements.