mppt vs pwm
Hi, A nice little video comparing mppt vs pwm with the batteries in bulk mode. mppt vs pwm
Forum Discussion
jrnymn7 wrote:
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Or do folks see mppt drop out of mppt at a lower than expected SOC, and stay there?
And Brulaz brings up a good point. Perhaps some have their mppt's setpoint too low, and this is causing premature de-bulkulation?
Not sure how the MPPT would measure SOC. According to Rogue they just compare the battery voltage, which can vary with loads, SOC, to the setpoint (14.8V in my case). And move into Absorb mode when the setpoint is reached.
The manual also makes this point:
Rogue wrote:
Under some conditions (very low light and shading) the array’s power curve will be nearly flat and will have no discernable maximum power point to track. This can be especially evident when using series-wired modules.
During these periods, which are common in the morning and evening, and potentially during periods of array shading, the PV array produces little usable energy and the MPT-3048 may attempt a more efficient direct connection between the array and the batteries.
