I am currently developing a open-source solar tracker system in Matera within the framework of the unMonastery project. Here is the description of the project : /t/open-source-solar-tracker/355
I’m looking for experts to collaborate with me to design the mechanical and electrical part.
Mechanical part :
Design a system that can support solar panels :
Should be as simple as possible so that “anyone” can build it.
Should be designed in a way that you can adapt it easily if you want to build a smaller / larger system
Electrical part :
Design a system that can drive the mechanical part described above.
Should be as simple as possible so that “anyone” can build it.
To get the system position it should rely on independent components (like encoders) so that the motors can be interchangeable.
I had this idea for a friend who’s making a heliostat (sun mirror). He liked it, but sticked with his very complex gearboxes. The elegance of this system is that it will be very stable, because the edges are supported, and not only a center joint that has to be very rigid and therefore expensive.
Here’s the proof of concept in cardboard (first two minutes is introduction to the problem)
Downside of this mechanism is that the angle is limited, it cannot make full use of the late evening/early morning sun.
Let me know, would be a joy to work it out with you guys.
Althoug this system suffer from a reduced range of inclination, it can offer the huge benefit of a lightweight structure. As in other cases, it could be useful to develop a simulation that, given the optimal and the actual range of rotation on both axis, calculates the relative efficiency of the panels under such conditions. I don’t know if something similar is already done by someone, i could make some search.
Okay, I’ve been playing with Qcad and this system does not seem the best to me. (btw, any tips to share these dxf files with you and the rest of the world?)
Two major disadvantages:
The max angle seems to be around 22,5° in two directions. The sum of the diagonals is about 6% shorter then when it is in the middle. This asks for some elastic element, which is an extra disadvantage for the next disadvantage.
At max angle the lower leg and the solar panel are almost in-line. This is very close to a self-locking angle of 180°.
I was electrical/ electronic fitter & turner. If I can be of any assistance please contact me. I have a few friends who work in the solar business who may be willing to assist.
