摘要
针对一般光伏发电系统中存在的太阳能利用率较低的问题,设计了一种太阳能跟踪光电传感器,并提出了一种混合跟踪控制策略的优化方法。系统采用时控和光控相结合的跟踪模式,通过控制器整合处理传感器的实时数据,将俯仰和方位两个维度的偏差角度转换成一定数量的PWM脉冲,从而驱动步进电机使太阳能电池板与太阳光线呈垂直姿态。实验测试结果表明:所设计的光电检测传感器模块可以准确地跟踪太阳方位,采用优化的混合跟踪控制策略不仅降低了系统功耗,而且提高了跟踪精度,整个系统最终实现了太阳能利用率最大化的目标。
A solar tracking photoelectric sensor was designed and an optimization method of hybrid trackingcontrol strategy was proposed for improving solar energy utilization in general photovoltaic power generationsystem. The system adopts a tracking mode combining time control with photoelectric control. The controllerintegrates and processes the real-time data of the sensor,converts the deviation angles of pitch and azimuth intosome pulse width modulation,thereby drives the stepping motor to make the solar panel in a vertical positionwith the sun’s rays. The experimental results showed that the designed photoelectric detection module couldaccurately track the position of the sun,and the optimized hybrid tracking control strategy not only reduced thesystem power consumption,but also improved the tracking accuracy. The entire system finally achieved the goalof maximum utilization of solar energy.
作者
张双华
文小玲
邵鹏程
陈立明
ZHANG Shuanghua;WEN Xiaoling;SHAO Pengcheng;CHEN Liming(School of Electrical and Information Engineering, Wuhan Institute of Technology, Wuhan 430205, China;Hubei Research Center of Video Image and High Definition Projection Technology, Wuhan 430205, China)
出处
《武汉工程大学学报》
CAS
2018年第3期315-319,共5页
Journal of Wuhan Institute of Technology
关键词
太阳能
时控跟踪
光控跟踪
光电传感器
单片机
solar energy
time clock tracking
photoelectric tracking
photoelectric sensor
single-chip microcomputer
