光伏发电最大跟踪点的激光定位测试

Laser Location Test for Maximum Tracking Point of Photovoltaic Power Generation

光伏发电效率较低,电池组的输出特性受气候、天气变化的影响大,为了更为有效地利用太阳能进行光伏发电,提出一种基于激光定位技术的光伏发电最大跟踪点定位测试方法研究。利用光强传感器和激光方位传感器对太阳的移动轨迹进行光电跟踪;引入基于灰度重心和边缘拟合的激光定位算法,确定光斑的精确位置;最后基于最优梯度法,选定光伏系统目标函数正确的梯度方向,并进行每一步迭代寻优,实现光伏发电最大功率点的精确跟踪和定位。结果表明,提出的激光定位测试方法具有更高系统稳定性和定位精度,同时光伏阵列也能够获得更高的输出功率。

Low efficiency of photovoltaic power generation,affect the output characteristics of the battery due to climate and weather changes,in order to make more effective use of solar photovoltaic power generation,a laser positioning technology based on the photovoltaic maximum tracking point positioning test method research. The light intensity sensor and laser range sensor movement trajectory of the sun photoelectric tracking; introduction of accurate positioning of the laser technology and gray centroid based on edge fitting,determine the spot position; finally,based on the optimal gradient method,the selected target PV system function correctly gradient direction,and each step of iterative optimization,accurate tracking and positioning the maximum power point of the photovoltaic power generation. The results show that the proposed laser positioning method has higher system stability and positioning accuracy,and the photovoltaic array can also achieve higher output power.