作者：何海鸿, 张旭东, 陈明凯

作者单位：成都钟顺科技发展有限公司, 四川成都 610064

关键词：高度角; 地平坐标; 双轴跟踪系统; 连续测控; 数据拟合; 时基控制

摘要：

为了解决太阳高度角跟踪的非线性控制问题,建立了跟踪系统的三维模型,获得光伏阵列高度角的增量所对应的电动推杆的脉冲增量,并通过数据拟合得到两者的函数关系式,以控制电动推杆,同时利用太阳高度角的理论值所对应的电动推杆的脉冲增量对其进行修正。采用这种开环和闭环联合控制的方式,实现了光伏阵列对太阳高度角的连续精确跟踪。

Control and test of elevation angle for dual-axis tracking system of horizon coordinates

HE Hai-hong, ZHANG Xu-dong, CHEN Ming-kai

Chengdu Zhongshun Science and Technology Development Co., Ltd., Chengdu 610064, China

Abstract: In order to solve the non-linear tracking control problem of the solar elevation angle, a three-dimensional model of the tracking system had been established, and the elevation angle incremental of photovoltaic array and the pulse incremental of electric pushrod had been obtained.Then these data had been fitted to get the relationship for controlling the electric pushrod.At the same time, the electric pushrod pulse incremental, which corresponded to the theoretical value of solar elevation angle, had been used to amend the photovoltaic array elevation angle.With this open-loop and closed-loop joint control approach, it had been realized to track the elevation angle of the photovoltaic array continuously and accurately.

Keywords: Elevation angle; Horizon coordinates; Dual-axis tracking system; Continuous detection and control; Data fitting; Time-base control

2009, 35(4): 1-3  收稿日期: 2009-1-8;收到修改稿日期: 2009-3-15

基金项目: 国家863计划项目(2006AA050204)

作者简介: 何海鸿(1965-),男,重庆市人,高级工程师,主要从事太阳跟踪控制器控制系统的设计。

参考文献

[1] 赵争鸣,刘建政,孙晓瑛,等.太阳能光伏发电及其应用[M].北京:科学出版社,2002:77-78.
[2] 窦 伟,许洪华,李 晶.跟踪式光伏发电系统研究[J].太阳能学报,2007,28(2):169-173.
[3] 田 玮,王一平,韩立君,等.聚光光伏系统的技术进展[J].太阳能学报,2005,26(4):600.
[4] 王炳忠.太阳能中天文参数的计算[J].太阳能,1999(2):32-34.
[5] 何海鸿,张旭东,何 欢.LED太阳探测器的原理[J].硅谷,2009(1):41-42.
[6] 张旭东,何海鸿,陈明凯,等.太阳能光伏发电系统的双轴跟踪器设计[J].科技促进发展,2008(11):10-12.