Calling on Solar Techies
I have been thinking of going solar for some time and decided to pull the plug. My wants are a 400 to 500 watt system. I have four 12 volt batteries with 340ah. I am not planning on changing b...
Forum Discussion
MPPT controllers have a buck converter in them, which is used even when doing 12-12 or 24-24 etc.
They only do MPP tracking in the Bulk charging stage, and do not do tracking for Vp in the Absorb/Float stages when the action is by "demand" on the buck converter. If the demand goes up for more of a load in Float then it will supply more amps (if the panels will supply them)
Panel voltage will seem to go up and down with the rapid switching on/off timing durations making for an average kind of reading, not be held to Vp, and that on/off is called PWM.
They only do MPP tracking in the Bulk charging stage, and do not do tracking for Vp in the Absorb/Float stages when the action is by "demand" on the buck converter. If the demand goes up for more of a load in Float then it will supply more amps (if the panels will supply them)
Panel voltage will seem to go up and down with the rapid switching on/off timing durations making for an average kind of reading, not be held to Vp, and that on/off is called PWM.
