I friend I bought used panels from had sun-tracking on her panels and the frustrating thing is the energy they used up compensating for clouds and the tracker kept moving to find the sun. Mine are in a fixed position and I don't worry about trying to get every millivolt of energy from the array. If I want more power I add more panels and more batteries.
Yes, TODAY, the only reason to track is if you have some kind of restriction on the amount of panels...either a power company feedback issue, or space restriction. 15 years ago, when panels were 4-5 bucks/watt, it made economic sense to squeeze out every drop of power. Panels under a buck/watt, it no longer does.
If "using bigger relays made them last longer a bit longer" then that might be the place to start. I could slave the controller to send its 12v output to a 240V relay. I have a small pile of 240v to 12v transformers, and bridge rectifiers are almost free. Or maybe there are some that use solid state relays now. The problem here is wind also. I will limited to a single 300w panel per actuator.
