mppt vs pwm
Hi, A nice little video comparing mppt vs pwm with the batteries in bulk mode. mppt vs pwm
Forum Discussion
BFL said,
"It is the buck converter, that's the whole point. Isc means nothing when you are using the controller with a buck converter. The amps you get to the battery is always output power/Vbatt. All the MPPT does in Bulk is fine tune the input power to improve the output power somewhat."
O.K., I think it just clicked. I was thinking in terms of an MPPT dropping completely out of mppt AND bucking, and being left with only pwm working with panel Isc. But if the bucker is still functioning, the switch from bulk to abs, at a lower soc, would not cause a sudden drop down to Isc.
"It is the buck converter, that's the whole point. Isc means nothing when you are using the controller with a buck converter. The amps you get to the battery is always output power/Vbatt. All the MPPT does in Bulk is fine tune the input power to improve the output power somewhat."
O.K., I think it just clicked. I was thinking in terms of an MPPT dropping completely out of mppt AND bucking, and being left with only pwm working with panel Isc. But if the bucker is still functioning, the switch from bulk to abs, at a lower soc, would not cause a sudden drop down to Isc.
