Forum Discussion
BFL13
Jan 22, 2015Explorer II
"... That's why I can pull the same amps in float as I do in MPPT. "
Not so sure about that! Yes you do get more amps than panel Isc which shows that the buck converter is working. But do you get as many as if panel voltage were at Vmp?
The MPPT, which is not "on" in Absorb and Float, ensures that the best panel voltage is chosen as buck converter input, but only during Bulk. So what panel voltage is in effect during Absorb and Float instead of Vmp?
It can't be just battery voltage as with 12v PWM controllers, because you get more than Isc when running loads in Absorb and Float.
Not so sure about that! Yes you do get more amps than panel Isc which shows that the buck converter is working. But do you get as many as if panel voltage were at Vmp?
The MPPT, which is not "on" in Absorb and Float, ensures that the best panel voltage is chosen as buck converter input, but only during Bulk. So what panel voltage is in effect during Absorb and Float instead of Vmp?
It can't be just battery voltage as with 12v PWM controllers, because you get more than Isc when running loads in Absorb and Float.
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