Hi Everyone
How does the Mppt make the decision (What is the logic) between charging, Absorbtion etc when there is a variable load in parallel with the battery.
How does it ‘know’ how much current is going to the battery/load in order to not over charge the battery
Andy
The change from bulk to absorp is triggered by battery voltage.
The charger does know how much output current is required to maintain the target battery voltage.
If a load cuts in during absorp, the battery voltage would drop, thus the charger would increase the output current until the battery voltage reaches the absorp target.
Likewise if a load cuts out, the battery voltage would creep up.
Then the charger output current will be reduced until the battery voltage settled back to the target voltage.
Thanks that makes a lot of sense
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