mppt vs pwm
Hi, A nice little video comparing mppt vs pwm with the batteries in bulk mode. mppt vs pwm
Forum Discussion
One thing I'm wondering about:
We know MPPT controllers use excess voltage to create amps. But do they also use available amperage to create voltage?
... In the mppt vs. pwm test, (the one by cruisemarine? is it?), it was cloudy and rainy. The pwm did poorly, but the mppt did quite well, all things considered. So how did it do it?
I'm thinking, seeing as the 12v panel's Vmp would be low, the pwm had little to no voltage to "pull down", so charging was poor at best, and often not at all. But the MPPT was able to scavenge enough Wattage, regardless of the low Vmp, and make enough power to charge. In other words, available amps were sacrificed in order to increase voltage to a level high enough for charging to take place.
We know MPPT controllers use excess voltage to create amps. But do they also use available amperage to create voltage?
... In the mppt vs. pwm test, (the one by cruisemarine? is it?), it was cloudy and rainy. The pwm did poorly, but the mppt did quite well, all things considered. So how did it do it?
I'm thinking, seeing as the 12v panel's Vmp would be low, the pwm had little to no voltage to "pull down", so charging was poor at best, and often not at all. But the MPPT was able to scavenge enough Wattage, regardless of the low Vmp, and make enough power to charge. In other words, available amps were sacrificed in order to increase voltage to a level high enough for charging to take place.
