mppt vs pwm
Hi, A nice little video comparing mppt vs pwm with the batteries in bulk mode. mppt vs pwm
Forum Discussion
Shading
All panels parallel...output will be reduced only by the amount of the reduction of the panels that are shaded, this may or may not be the full output of these panels, depending on amount of shade etc...
Series is can of worms, two panels 17v at 4 amps in series produce 34v at 4 amps
The number of internal by pass diodes now play a major part in what happens
Panels with good by pass well drop output, from shade but still pass thru the amps from the sunny panel, do you might get 25v at 4 amps
Panels with poor low number of bypass diodes, might shut down most of the way and block the current, because there is no place for the amps from the sunny panel to pass thru aka around the shaded cells
Putting 3 or more panels in series requires no shading, or really good panel bypass diodes configuration
Series parallel attempts to give you the higher voltage and MPPT gains, yet limits the series to Paris of panels and puts the PAIRS in parallel so shading a panel doesn't kill the all the output
Shading one panel in one pair only reduces the output of one pair, not all the panels
All panels parallel...output will be reduced only by the amount of the reduction of the panels that are shaded, this may or may not be the full output of these panels, depending on amount of shade etc...
Series is can of worms, two panels 17v at 4 amps in series produce 34v at 4 amps
The number of internal by pass diodes now play a major part in what happens
Panels with good by pass well drop output, from shade but still pass thru the amps from the sunny panel, do you might get 25v at 4 amps
Panels with poor low number of bypass diodes, might shut down most of the way and block the current, because there is no place for the amps from the sunny panel to pass thru aka around the shaded cells
Putting 3 or more panels in series requires no shading, or really good panel bypass diodes configuration
Series parallel attempts to give you the higher voltage and MPPT gains, yet limits the series to Paris of panels and puts the PAIRS in parallel so shading a panel doesn't kill the all the output
Shading one panel in one pair only reduces the output of one pair, not all the panels
