Design Of Solar Fixed Point Tracking Device And Energy Saving Technology Of Tracking System

Facing the increasingly serious energy and environmental issues, solar energy with itsinexhaustible, clean pollution-free by countries around the world generally preferred. Withsolar energy resources are very abundant in our country, develop good solar to relieve thestrain on our country’s energy supply has important practical significance.Solar light utilization technology is one of the key factors of efficient utilization of solarenergy. It not only determines how to use of the sunlight, also affects the service life of therelated materials, the structure and cost of the device. Due to the sun light irradiation intensityhas many characteristics, including intermittent, band, heterogeneity and the time-varying. Sothe sun light absorption utilization rate is relatively low. Now most of the solar device is fixedand can not guarantee that the sun be used fully. This leads to a waste of resources.Based on the division of sunlight utilization device, a biaxial servo solar tracker withmicrocontroller is designed. The device works with angle sensor signal acquisition and Solarposition algorithm. And photoelectric sensor detects the intensity of light and the deflection ofsun. At the same time, stepper motor makes the solar energy concentrating frequencyequipment vertical to sunlight, and maximizing the receiver using the solar resources.According to the outdoor wind environment, the design of a binary voltage compensationscheme, this can make the motor selection of smaller margin and achieve the purpose ofsaving energy consumption. According to the hardware structure of system design, thesoftware design of the system, including the main program, initialization module, solarposition algorithm module, a photoelectric detection module, drive execution module, voltagecompensation module etc. The hardware and software design is tested in the laboratory, andsatisfied the requirements of tracking basically.Although the condensing device can realize the basic frequency to track the location ofthe sun, but the reliability, the longitude and the speed of tracking are yet to be improved. So aparameter self-tuning fuzzy PID control system is designed. The tracking system’s dynamicresponse is texted through the SIMULINK. The result shows that: the intelligent controlmethod has high accuracy, fast dynamic response, small overshoot, and stronganti-interference ability. The intelligent method provides a theoretical basis for engineeringapplications, also shows that the intelligent control method has potential application in dishsolar light tracking.