Solar-Panel to Controller Loss
Much has been made of the lower losses on the panel to controller path with MPPT because the amps are less. So once you have your loss measured, how valuable is it to improve on that if you don't lik...
Forum Discussion
There is mo way for a MPPT controller to "drop out" of bucking because there is no secondary straight PWM controller built in to do it with. Everything comes through the buck converter.
The Eco-w has a built in sensor that keeps it from cooking itself. The only time I saw it work was when I let it sit in the sun and the case got hot to the touch. I know if it gets too hot it will shut down and display a over heat message but all mine did was clip the amps until I shaded it. Then it went back to normal operation. Other than that I have had them get warm while pushing 17 and 18a long term but they never never backed off the same peak they pushed when cool.
Even after three years I still see people wanting to say that somehow the Eco-w is faulty. It can push the same current/watts from the 250w polys as the MS-MPPT-60 does and did so for four hours while running the little A/C.(twice) I can tell you this, I have never had a Eco-w get stuck in float or become confused after a panel crashed like the big controller does.
The Eco-w has a built in sensor that keeps it from cooking itself. The only time I saw it work was when I let it sit in the sun and the case got hot to the touch. I know if it gets too hot it will shut down and display a over heat message but all mine did was clip the amps until I shaded it. Then it went back to normal operation. Other than that I have had them get warm while pushing 17 and 18a long term but they never never backed off the same peak they pushed when cool.
Even after three years I still see people wanting to say that somehow the Eco-w is faulty. It can push the same current/watts from the 250w polys as the MS-MPPT-60 does and did so for four hours while running the little A/C.(twice) I can tell you this, I have never had a Eco-w get stuck in float or become confused after a panel crashed like the big controller does.
