高精度太阳能跟踪控制器

摘要

针对目前采用的传统太阳能跟踪控制器传感器形式单一、抗干扰性差、跟踪精度不高等问题,设计了一种基于可编程逻辑控制器(Programmable Logic Controller,PLC)的太阳能跟踪控制器系统.该系统将固定轨迹粗略跟踪方式与光电传感器精确跟踪方式有效地结合起来,并重点将光电传感器加以改进,从而有效地提高了太阳能利用率.由伺服电机作为执行机构控制太阳能板对太阳位置的跟踪,可以实现对太阳高度角和方位角的双自由度跟踪,使太阳能跟踪装置始终正对着太阳光线位置.通过对比实验表明,该跟踪控制器可以达到较高的跟踪精度.%Considering the problems of the current solar tracking controller, such as poor immunity, poor tracking accuracy and the single form of traditional sensor, we designed a dual-mode, high-precision solar tracking system based on Programmable Logic Controller ( PLC). The system effectively combines the rough tracking of fixed trajectory with the accurate tracking of photoelectric sensor, and improves the solar tracking controller's photoelectric sensor tracking mode, thus can increase the utilization of solar energy. The controller has two degrees of freedom, which can track the solar altitude angle and azimuth, and the servo motor as executive agency controls the position of the sun solar tracker, make solar tracking device always vertical to the sun's rays. The experiments results show that the tracking controller can achieve high tracking accuracy.