Buck Gizmo Test Results
This test was to see how much the amps went up at the output of the buck converter compared with the input amps. This is the gizmo again: http://www.ebay.com/itm/DC-DC-15A-Converter-Buck-Adjustabl...
Forum Discussion
ken white wrote:BFL13 wrote:
...Ok so the CV in the controller's buck converter has some magic way to match the battery voltage (is that impedance matching?) that my gizmo is missing? What is that magic way?
A controllers feedback loop is designed to optimize current, not voltage so the design is quite different.
I get that the controller has an MPPT up front that fiddles its resistance to keep the panel at Vmp (sampling for wattage with feedback on that) so it will maintain best wattage for later use by the buck converter to have the best output wattage so it can make optimum amps at any battery voltage (I think :( )
So now as well as that, it has another feedback thing happening at the CV end?
I do see the MPPT controller still doing higher than panel amps when the controller is in PWM and there is enough "demand" for those amps, so it isn't MPPT doing that
