Tracker support system for solar sensor

Abstract

Tracker support system ( 1 ) for solar sensor comprising:—a fixed structure ( 2 ) for anchoring to the ground exhibiting several anchoring points ( 21 ) defining an anchoring plane and separated from one another by distances termed ground prints, including a larger ground print distance (DE) established between at least two anchoring points ( 21 ); and—a movable structure ( 3 ) comprising:—a first armature ( 4 ) mounted rotatably on the fixed structure ( 2 ) according to a vertical axis of rotation (AV); and—a second armature ( 5 ) defining a support plane for the solar sensors and mounted rotatably on the first armature ( 4 ) according to a horizontal axis of rotation (AH) extending to a distance termed the zenith height from the anchoring plane; said tracker support system ( 1 ) being noteworthy in that the ratio of the largest ground print distance (DE) to the zenith height is included in a span ranging from 0.5 to 1.5, and preferably in a span ranging from 0.8 to 1.2.

1 . A tracker support system for a solar collector, of the type that can be oriented along two axes of rotation, a vertical axis of rotation and a horizontal axis of rotation, respectively, and comprising:
 a fixed structure for anchoring to the ground exhibiting several ground anchoring points, said anchoring points defining a ground anchoring plane orthogonal to the vertical axis of rotation and being separated from one another in the ground anchoring plane by predetermined distances called ground prints, including a larger ground print distance established between at least two anchoring points that are furthest apart; and   a movable structure comprising:   a first framework mounted rotatably on the fixed structure along the vertical axis of rotation; and   a second framework defining a support plane for the solar collectors and mounted rotatably on the first framework along the horizontal axis of rotation, said horizontal axis of rotation extending to a predetermined distance, comprising a zenith height, from the anchoring plane;   wherein a ratio of the largest ground print distance to the zenith height is included in a span ranging from 0.5 to 1.5.   
     
     
         2 . The tracker support system according to  claim 1 , wherein the fixed structure comprises a pylon having feet on which the anchoring points are provided and extending over a predetermined height from the ground anchoring plane, the ratio of said height of the pylon to the zenith height being comprised in a span ranging from 0.5 to 0.9. 
     
     
         3 . The tracker support system according to  claim 2 , wherein the pylon has:
 four feet separated from each other and defining the four corners of a rectangle or square, said feet having respective lower ends defining four ground anchoring points; and   a mast topping said feet, which extend toward the outside of the mast.   
     
     
         4 . The tracker support system according to  claim 2 , wherein said pylon is made up of an assembly of metal profiles having a length smaller than approximately 3 m, a transverse section whereof the dimensions are smaller than approximately 150 mm by 150 mm, said metal profiles being assembled by screwing, bolting or riveting. 
     
     
         5 . The tracker support system according to  claim 1 , wherein the fixed structure includes a ring gear on which the first framework is rotatably mounted along the vertical axis of rotation, and several feet distributed on the periphery of the ring, and defining the ground anchoring points. 
     
     
         6 . The tracker support system according to  claim 1 , wherein the second framework includes a platform defining the support plane for the solar collectors and at least two guy ropes positioned on either side of the vertical axis of rotation, each guy rope extending substantially orthogonally to said support plane and having a part fixed on the platform and at least one free end connected to the platform using connections comprising at least one of a tension rope, rigid rod or metal profile. 
     
     
         7 . The tracker support system according to  claim 6 , wherein each guy rope extends on either side of the platform and has two opposite free ends connected to the platform using connections, each guy rope having a central part fixed on the platform. 
     
     
         8 . The tracker support system according to  claim 6 , wherein the at least two guy ropes comprise two pairs of guy ropes positioned on either side of the vertical axis of rotation. 
     
     
         9 . The tracker support system according to  claim 1 , wherein the second framework includes a platform defining the support plane of the solar collectors and which comprises:
 at least two sidepieces substantially parallel to the horizontal axis of rotation and rotatably mounted on the first framework; and   several beams extending between the sidepieces, fixed on said sidepieces and designed to bear the solar collectors.   
     
     
         10 . The tracker support system according to  claim 1 , further comprising at least three anchoring members, configured to cooperate with the ground anchoring points to anchor the fixed structure in the ground, said ground anchoring members being designed to penetrate the ground and anchor the tracker support system. 
     
     
         11 . The tracker support system according to  claim 1 , wherein the first framework includes at least two arms secured to each other and rotatably mounted on the fixed structure. 
     
     
         12 . The tracker support system according to  claim 12 , wherein the two arms form a V-shaped structure. 
     
     
         13 . The tracker support system according to  claim 12 , wherein the first framework includes two supports fixed on the upper ends of the two arms, respectively, and each having a first bearing and a second bearing in which the transmission shaft and the corresponding ring gear sector are respectively rotatably mounted. 
     
     
         14 . The tracker support system according to  claim 1 , comprising a motorized system for rotating the first framework along the vertical axis of rotation, including:
 a casing securely mounted on the first framework;   a rotary engine mounted in the casing and rotating an output shaft;   a worm screw secured in rotation to the output shaft of the rotary engine; and   an annular gear wheel fixed on the fixed structure and in mesh with the worm screw.   
     
     
         15 . The tracker support system according to  claim 1 , comprising a motorized system for rotating the second framework along the horizontal axis of rotation, including:
 two ring gear sectors positioned on either side of the vertical axis of rotation and extending in two planes orthogonal to the horizontal axis of rotation, said ring gear sectors being fixed on the second framework;   two drive pinions positioned on either side of the vertical axis of rotation and in mesh with the corresponding ring gear sectors;   a transmission shaft rotatably mounted on the first framework and supporting the two drive pinions for synchronous rotation of said drive pinions; and   a rotary engine rotating said transmission shaft and mounted on the first framework.   
     
     
         16 . The tracker support system according to  claim 1 , wherein the second framework defines a support surface area for the solar collectors comprised between approximately 40 and 100 m 2 . 
     
     
         17 . The tracker support system according to  claim 1 , wherein the horizontal axis of rotation is separated from the vertical axis of rotation by a predetermined distance such that the second framework can be moved into a position in which the support plane is vertical. 
     
     
         18 . A solar assembly including a tracker support system according to  claim 1 , and solar collectors supported by the second framework of the tracker support system.