Abstract:
An adjusting device is provided for solar tracker. The adjusting device is used for testing off-axis beam damage of a CPV module. A universal transmission unit is comprised for adjustment. Thus, a CPV module is exactly focused to a predestined position. Furthermore, a focusing point of the CPV module can be biased to the predestined position for testing off-axis beam damage.

Description:
TECHNICAL FIELD OF THE INVENTION 
       [0001]    The present invention relates to adjusting solar tracker; more particularly, relates to using a universal transmission unit for exactly focusing a concentrator photovoltaic (CPV) module and further biasing a focusing point of the CPV module to a predestined position for testing off-axis beam damage. 
       DESCRIPTION OF THE RELATED ART 
       [0002]    Owing to power shortage and environmental protection issue, green and convenient solar energy is most welcomed. However, because of the revolution of the earth around the sun and the earth&#39;s tilted axis, the orbit of the sun related to the earth is ever-changing by seasons and time. Therefore, solar trackers are developed for effectively collecting sunlight. 
         [0003]    However, these solar trackers only focus on the function of tracking, not on climatic changes or device error control. As a result, a focus bias of a CPV module may burns a key component in a solar cell or make it malfunctioned; and, thus, operation of a whole solar system containing the CPV modules may become in danger or be ruined. Hence, the prior art does not fulfill requests of off-axis beam damage test on actual use. 
       SUMMARY OF THE INVENTION 
       [0004]    The main purpose of the present invention is to use a universal transmission unit for exactly focusing a CPV module and further biasing a focusing point of the CPV module to a predestined position for testing off-axis beam damage. 
         [0005]    To achieve the above purpose, the present invention is an adjusting device of solar tracker for testing off-axis beam damage of a CPV module, comprising a solar tracker, a universal transmission unit and a CPV module, where the solar tracker comprises a base, a driver unit, a platform, a sun position sensor and a controller unit; the driver unit is located on the base; the platform is located on the driver unit; the sun position sensor is located on the platform; the controller unit is electrically connected with the driver unit and the sun position sensor; the universal transmission unit is located on the platform of the solar tracker; the universal transmission comprises a first transmission unit, a second transmission unit and a frame; the first transmission unit is located on the platform; the second transmission unit is located on the first transmission unit; the frame is located on the second transmission unit; and the CPV module is located on the frame of the universal transmission unit. Accordingly, a novel adjusting device of solar tracker for testing off-axis beam damage of a CPV module is obtained. 
     
    
     
       BRIEF DESCRIPTIONS OF THE DRAWINGS 
         [0006]    The present invention will be better understood from the following detailed description of the preferred embodiment according to the present invention, taken in conjunction with the accompanying drawings, in which 
           [0007]      FIG. 1  is the perspective view showing the preferred embodiment according to the present invention; 
           [0008]      FIG. 2  is the explosive view showing the present invention; and 
           [0009]      FIG. 3  is the view showing the universal transmission unit. 
       
    
    
     DESCRIPTION OF THE PREFERRED EMBODIMENT 
       [0010]    The following description of the preferred embodiment is provided to understand the features and the structures of the present invention. 
         [0011]    Please refer to  FIG. 1  to  FIG. 3 , which are a perspective view and an explosive view showing a preferred embodiment according to the present invention; and a view showing a universal transmission unit. As shown in the figures, the present invention is an adjusting device of solar tracker for testing off-axis beam damage of a CPV module, comprising a solar tracker  1 , a universal transmission unit  2  and a concentrator photovoltaic (CPV) module  3 . 
         [0012]    The solar tracker  1  comprises a base  11 ; a driver unit  12  located on the base  11 ; a platform  13  located on the driver unit  12 ; a sun position sensor  14  located on the platform  13 ; and a controller unit  15  electrically connected with the driver unit  12  and the sun position sensor  14 . 
         [0013]    The universal transmission unit  2  is located on platform  13  and comprises a first transmission unit  21  located on the platform  13 ; a second transmission unit located on the first transmission unit  21 ; and a frame  23  located on the second transmission unit  22 . Therein, the first transmission unit  21  comprises a fixing support  211  located on the platform  13 ; a first worm wheel  212  located on the fixing support  211 ; a first moving support  213  movably combined with the fixing support  211 ; and a first worm  214  movably combined with the first moving support  213  and geared into the first worm wheel  212 . The second transmission unit  22  comprises a second worm wheel  221  located on the first moving support  213 ; a second moving support  222  movably combined with the first moving support  213 ; and a second worm  223  movably combined with the second moving support  222  and geared into the second worm wheel  221 ; and, the frame  23  is combined on an end surface of the second moving support  222 . 
         [0014]    The CPV module  3  is located on the frame  23  of the universal transmission unit  2  and comprises a module frame  31  located on the frame  23  of the universal transmission unit  2 ; a solar cell  32  located on the module frame  31 ; and an optical unit  33  corresponding to the solar cell  32  and located on the module frame  31 , where the optical unit  33  is a lens. 
         [0015]    On using the present invention, the universal transmission unit  2  is used to make the CPV module  3  exactly focus sunlight and to bias the focusing point at a predestined angle for testing off-axis beam damage of the CPV module  3 . With coordination of a tool or motor, the first worm  214  of the first transmission unit  21  is turned automatically or manually. When the first worm  214  is turned, the first worm  214  is coordinated with the first worm wheel  212  on the fixing support  211  to drive the first moving support  213  to be adjusted leftward or rightward on the fixing support  211 ; and, then, the second transmission unit  22  and the frame  23  are driven to be turned left or right for thus biasing the focusing point of the CPV module at the predestined angle. 
         [0016]    In the other hand, with coordination of a tool or motor, the second worm  223  of the second transmission unit  22  is turned automatically or manually. When the second worm  223  is turned, the second worm  223  is coordinated with the second worm wheel  221  on the first moving support  213  to drive the second moving support  213  to be adjusted forward or backward on the first moving support  213 ; and, then, the frame  23  are driven by the second moving support  22  to be moved forward or backward for thus biasing the focusing point of the CPV module at the predestined angle. Thus, the first transmission unit  21  and the second transmission unit  22  of the universal transmission unit  2  bias the focusing point of the CPV module  3  to a predestined place. With coordination of the sun position sensor  14 , the driver  12  and the controller  15  of the solar tracker  1 , the platform  13  carries the universal transmission unit  2  and the CPV module  3  for continuously tracking the sunlight in the environment and effectively testing off-axis beam damage. 
         [0017]    To sum up, the present invention is an adjusting device of solar tracker for testing off-axis beam damage, where a universal transmission unit is used for exactly focusing a CPV module and further biasing a focusing point of the CPV module to a predestined position for testing off-axis beam damage. 
         [0018]    The preferred embodiment herein disclosed is not intended to unnecessarily limit the scope of the invention. Therefore, simple modifications or variations belonging to the equivalent of the scope of the claims and the instructions disclosed herein for a patent are all within the scope of the present invention.