复合式太阳能跟踪控制器的设计  

Design of compound solar tracking controller

作　　者：张晓军[1] 杨家强[1] 汪俊杰 ZHANG Xiao-jun;YANG Ji(College of Electrical Engineering,Zhejiang a-qiang,WANG Jun-jie University,Hangzhou 310027,China)

机构地区：[1]浙江大学电气工程学院,浙江杭州310027

出　　处：《机电工程》2018年第6期649-652,共4页Journal of Mechanical & Electrical Engineering

基　　金：国家自然科学基金资助项目(51777191)

摘　　要：针对斜单轴太阳能跟踪系统单一跟踪方式跟踪精度低、存在跟踪累积误差、受天气影响大、稳定性差等问题,对太阳运动轨迹和光伏阵列跟踪轨迹建立了数学模型。提出了采用视日运动轨迹粗跟踪(此时误差2°内),然后通过二象限硅光电池光照传感器实现了精准跟踪(误差矫正到0.5°内的复合式跟踪方式);利用2.25 k W斜单轴跟踪装置,对所提复合式跟踪模型进行了验证和测试。研究结果表明:采用所提的复合式跟踪方式系统的跟踪误差在0.5°内,光伏阵列发电量比固定式光伏阵列发电量高26.2%,可以消除累计误差,克服天气影响,实现全天候可靠运行,对于提高光伏跟踪系统的跟踪精度和光伏电站发电量具有重要意义。Aiming at the single inclined uniaxial solar tracking system has low tracking precision, tracking accumulated error exists, affected by the weather and poor stability problems, the trajeetory and photovoltaie solar array tracking trajeetory mathematical model was established, which proposed depending on the day trajeetory coarse tracking （error 2°） at this time, then through two quadrant silicon photocell light sen- sors to realize accurate tracking （error correction to within 0.5°）. A 2.25 kW diagonal tracking device was used to verify and test the pro- posed compound tracking model. The results indicate that the proposed composite tracking mode can make the system tracking error within 0.5°, PV array output 26.2% higher than fixed photovoltaie an＇ay output, and it can eliminate the accumulated en＇or, to overcome the weather affect, realize the all-weather reliable operation, which to improve the tracking precision of PV tracking system and photovoltaie power generation is of great significance.

关 键 词：斜单轴 光照传感器 复合跟踪 

分 类 号：TP24[自动化与计算机技术—检测技术与自动化装置] TK513.4[自动化与计算机技术—控制科学与工程]