21 Sep DCM MPPT rev3 preliminary efficiency results
This is pretty rough territory for trackers to operate in – low input voltage, high input current, huge boost ratios. Datasheets for commercially available trackers show extremely low boost ratios that are unlikely in silicon solar car arrays.
We’ll continue to try and improve upon the high boost ratio design, but what we have today is already very good. It provides quite acceptable efficiency at a very low mass. Each board has two channels and weighs 347g without its case. That makes it 3.75 times the tracker-density of Drivetek trackers. There are still some losses to wring out of the inductor and the output diode.