The invention relates to a canal top solar FV project. More particularly, the invention relates to a seasonal tilting arrangement of a canal top solar FV Plant for generation of more power annually. The invention also relates to a moveable walkway to facilitate water washing of the FV modules as well as have total accessibility to the underside of the modules for erection and maintenance.
BACKGROUND OF THE INVENTION:
Canal top solar PV plants of the prior art have fixed type of structure for mounting PV modules i.e the modules are placed at Latitude angle and they do not have any arrangement for changing the orientation of the PV modules according to position of the sun during different months of the year.
The prior art design had separate/individual walkways for all the tables of modules mounting structures. The power generation due to fixed angle position round the year is less as compared to the seasonal tilting structure. Cost of Canal top solar PV plant increase due to individual walkways. There is no accessibility to the underside of the modules for erection and maintenance.
WO2012036642 discloses an invention of a solar equipment in which a set of solar modules and a set of mirrors are placed adjacent to each other in a V shape. There are solar sensors installed at the mirror designed to tilt the mirror clockwise and anticlockwise to capture the solar radiation. The tilting mechanism is further described a electromechanical design connected to the electronic controller or tilting mechanism of the hydraulic design having the actuator connected to the electronic controller outlet or the tilting mechanism of the pneumatic design having the actuator connected to the electronic controller outlet or

the tilting mechanism in the form of the endless screw having the
actuator connected to the electronic controller outlet.
US2010017S741 discloses an invention of an apparatus for controlling orientation of photovoltaic panels in which the panels are arranged in parallel to one another and pivotably mounted over a longitudinal axis the tilting mechanism is further described a frame as one of a plurality the said frames arranged to have substantially parellel longitudinal axes wherein said second orientation means are configured to set the frames
to substantially the same tilt angel thus setting the photovoltaic panels
in the frames to substantially the same tilt angle, girders to hold said plurality of frames in a common structure; and a support configured for attaching the apparatus with a base surface.
US8629383 discloses an invention of an apparatus of a photovoltaic system in which pluraUty of photovoltaic modules are tilted as per requirement.
The existing art teaches about tilting arrangement which can be adapted and equipped for solar plant installed on land.
OBJECT OF THE INVENTION:
It is therefore, an object of the invention is to increase the power generation of Canal top solar photo voltaic power plant by providing arrangement for seasonal tilting to face the sun at an optimum angle different seasons of the year.
Another object of the invention is to reduce the manual effort during tilting the purlins across the canal by providing an arrangement of jacking nuts and link rods.

Yet another object of the invention is to decrease the cost of structures by eliminating the maintenance walkways between each of the table of PV modules.
A still further object of the invention is to provide accessibility to the underside of module for ease of installation and preventive maintenance and diagnostic checks by providing a movable working platform.
A still further object of the invention is to design the structure in such a way that there is no need either to lay the cable in a trench or to provide a separate cable tray. The same is incorporated in the module mounting structures itself, on the top of Girder as shown in fig.6(a).
A still further object of the invention is to design an angle iron fencing part in such a way that the lower part of the fencing serves the dual purpose of stiffener of the girder cum fencing post.
Another object of the invention is to eliminate foundation required for fencing posts there by reducing installation and project execution time.
BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS:
It is to be noted, however, that the appended drawings illustrate only typical embodiments of the present subject matter and are therefore not to be considered for limiting of its scope, for the invention may admit to other equally effective embodiments. The detailed description is described with reference to the accompanying figures. In the figures, the left-most digit(s) of a reference number identifies the figure in which the reference number first appears. The same numbers are used throughout the figures to reference like features and components. Some embodiments of system or methods in accordance with embodiments of

the present subject matter are now described, by way of example, and with reference to the accompanying figures, in which:
Fig 1 shows a general arrangement of the invention
Fig 2a shows a front view of the Girder in accordance to the invention
Fig 2b shows a top view of the Girder in accordance to the invention
Fig 3a shows a Cable support (Tray) and cable cover on the Girder in accordance to the invention.
Fig 3b shows a section through Connecting lugs for axle pipe for purlin support of the Girder in accordance to the invention
Fig 3c shows a section through connecting lugs for connecting links of the Girder in accordance to the invention
Fig 3d shows a section through supports for tilting mechanism of the Girder in accordance to the invention
Fig 3e shows a section through arrangement for providing fencing of the Girder in accordance to the invention
Fig 3f shows a details of arrangement for fixing girder to pile foundation
Fig 4a shows a front view of purlin looking in the direction of Canal flow in accordance to the invention
Fig 4b shows a top view of purlin with the Solar PV modules mounted in accordance to the invention

Fig 4c shows a sectional views of purlin in accordance to the invention
Fig 5 shows a tilting arrangement in accordance to the invention
Fig 5a shows, a tilting arrangement to increase a tilt angle in accordance to the invention
Fig 5b shows a tilting arrangement to reduce a tilt angle in accordance to the invention
Fig 6a shows the view of trolly (Movable walkway) in accordance to the invention.
The figures depict embodiments of the present subject matter for the purposes of illustration only. A person skilled in the art will easily recognize from the following description that alternative embodiments of the structures and methods illustrated herein may be employed without departing from the principles of the disclosure described herein.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS:
A Canal top solar PV plant with seasonal tilting arrangement and moveable walkway according to the invention comprises of the following
1. Girder fixed on pile foundations.
2. Built-up triangular purlins on which solar PV modules are mounted.
3. Arrangement of connecting the purlins to the Girder through on axle pipe, Connecting link and a jacking nut mechanism.

4. An arrangement of moveable walkway/ working platforms which gives easy access to modules for cleaning inspection of cable connection and module fixing bolts.
Figures 2 and 3 illustrates a girder that primarily comprises of two angle iron members on the top and a channel at the bottom running parallel to the canal. The top angles and the bottom channels being connected by lacing pipes. This welded built- up girder thus gets the required inertia to transfer the wind load from the purlins to the site foundation. The top two angles are also connected by a horizontal members in the form of an square tube at regular intervals. This horizontal member provides the necessary tie for stiffening as well as necessary support for cables running along the solar array. Thus the top two angles along with horizontal bracing is a load transfer of member cum cable tray.
Figure 4 shows a purlin primarily comprises of two angle iron members on the top and a channel at the bottom running perpendicular to the canal. The top angles and the bottom channels being connected by lacing pipes. The PV modules are mounted on this built of purlins.
Fig 5 shows a tilting arrangement.
Fig 5a shows a tilting arrangement to increase a tilt angle. Fig 5b shows a tilting arrangement to reduce a tilt angle. A tilting mechanism for a solar power plant the tilting mechanism that comprises a link rod coupled by two link pin wherein one link pin is at the Girder end and one link pin is at the purlin end; wherein the link rod comprises of plurality of fastening means; wherein the fastening means at the proximal end is rotated clockwise elevate an end atleast a PV module; wherein the fastening means at the distal end is rotated clockwise to lower the said end of atleast a PV module; wherein the tiltable mechanism is configured

for a canal top solar plant; wherein the tilting mechanism in adapted for three seasonal position.
A Canal top solar PV plant with seasonal tilting to comprise of triangular built up purlin with an axle pipe arrangement. An adjusting arrangement comprising of a link rod link pipe with holes perpendicular to pin axis, jacking nuts for raising as well as lowering the purlins. A connecting link connecting the purlin to the girder through link pins. Connecting link having holes corresponding to three seasonal positions of a year. A canal top solar PV plant with movable walkway to comprise of a trolley moving on rails placed on top of canal facilitating total access to the solar PV modules whether for module cleaning as well as for maintenance and inspection of canal connection of PV modules. In case of unlined canals the working platform would move on rails fixed to column posts supporting the module mounting table.
The design of the structure does not require to lay a cable in a trench or to provide a separate cable tray. A cable tray is formed within the structure. Also the weight of the cable would compensate the wind uplift force and thus reduce net uplift force on the foundation. The angle iron fencing post serves the dual purpose of stiffener of the girder cum fencing post. Also the fencing parts and fencing are to be so positioned that the weight of fencing parts and fencing compensate to some extent wind uplift forces and gets transferred through the girder to the foundation. Uplift forces on the girder foundation is reduced to some extent.
Also, the fencing parts and fencing are to be so positioned that the weight of fencing parts and fencing compensate to some extent wind uplift forces and gets transferred through the panels to the girder. Uplift forces on the girder foundation is reduced to some extent.

WE CLAIM:
1. A tilting mechanism for a solar power plant the tilting mechanism
comprising:
a link rod coupled by two link pin wherein each link pin is coupled to an end of atleast a PV module;
wherein the link rod further comprises of plurality of fastening means; wherein the fastening means at the proximal end is rotated clockwise to elevate an end of atleast a PV module;
wherein the fastening means at the distal end is rotated clockwise to lower the said end of atleast a PV module; wherein the tiltable mechanism is configured for a canal top solar plant.
2. The tiltable mechanism as claimed in claim 1, wherein the PV module
is mounted on a purlin supported by a girder.
3. The tiltable mechanism as claimed in claim 1 and 2, wherein the purlin comprises a two angle iron members on a top and a channel perpendicular to the canal.
4. The tiltable mechanism as claimed in claim 1 and 2, wherein the girder comprises a two angle iron member on a top and a channel in parallel to the canal.
5. The tiltable mechanism as claimed in claim 1, wherein the tilting mechanism in adapted for three seasonal position.

6. The tiltable mechanism as claimed in claim 1, wherein a movable walkway comprises of a trolley moving on rails placed on top of canal facilitating total access to the solar PV modules.
7. The tiltable mechanism as claimed in claim 1, wherein the tilting mechanism alters position of plurality of PV module.
8. The tiltable mechanism as claimed in claim 1, wherein as illustrated in the accompanying drawings.