mppt vs pwm
Hi, A nice little video comparing mppt vs pwm with the batteries in bulk mode. mppt vs pwm
Forum Discussion
Salvo said,
"You take a fairly large hit when going series. Look at the Rogue 3048 efficiency graph on pg. 43.
At 10A:
the 85V system is 93% efficient
the 51V system is 95% efficient
the 17V system is 97% efficient
That a loss of 0.4A when operating at 85V. 4% loss is significant. When on average, mppt is only 5% better than pwm, you're losing your advantage. I don't see it as a big deal to increase wire size for the 17V system to keep losses at 1%. RV cable runs are so short the cost is insignificant. "
I spent an extra $45 on cabling and connectors to go parallel, including 50' of portability.
"You take a fairly large hit when going series. Look at the Rogue 3048 efficiency graph on pg. 43.
At 10A:
the 85V system is 93% efficient
the 51V system is 95% efficient
the 17V system is 97% efficient
That a loss of 0.4A when operating at 85V. 4% loss is significant. When on average, mppt is only 5% better than pwm, you're losing your advantage. I don't see it as a big deal to increase wire size for the 17V system to keep losses at 1%. RV cable runs are so short the cost is insignificant. "
I spent an extra $45 on cabling and connectors to go parallel, including 50' of portability.
