侧拉式斜单轴太阳能跟踪装置的设计及发电效率研究
Design of Side-pull Tilted Single Axis Solar Tracker and Efficiency Improvement of Power Generation

侧拉式斜单轴太阳能跟踪装置利用将旋转驱动力从转动轴分离到远离轴心的支架上这一机械结构创新理念，并结合“杠杆原理”大大降低了跟踪驱动力；减小跟踪控制半径提高跟踪精度；引入“三点决定一个平面”几何原理改善装置运行稳定性；并采用下潜式双层结构降低设备转动部件的重心以便减小风力扰动引起的不稳定性。样机测试表明：与固定式光伏发电系统相比，侧拉式太阳能跟踪装置的发电量可以提高28.9%-51.9%；不论晴天或是多云，其发电效率提升稳定性好；月均发电效率提升40.57%，接近并超过部分双轴跟踪系统。
The side-pull tilted single axis tracking PV system has an innovation of the structural design idea, which removes the driving force far away from the rotating axis, introduces the conception of lever principle to reduce the driving force, and reduces the tracking control radius leading to increase the accuracy of tracker, and introduces the geometric principle of "three points determine a plane" to improve the running stability. The new design of double-deck brackets lowered the center of gravity to effectively enhance the instability of the wind disturbances. The power generation of the solar PV system was tested and a comparative test shows the increase of daily power generation of the side-pull tilted single axis tracker is 28.9% to 51%. The results show that the side-pull tilted single axis tracking PV system can gain more electricity steady even in a partly-cloudy weather. The monthly average increase of power generation efficiency is 40.77% than the fixed one, which performs very close even beyond a dual axis tracking system