Bucking and MPPT?
Question here is whether I saw where the effect of MPPT was seen or not---was the amount of change about right? Situation was controller (Eco-Worthy 20amper) was showing 14.4v (as set by me for Flo...
Forum Discussion
Will try to answer however I am confused as to what EXACTLY you are asking
MPPT: Maximum Power Point Tracking
A proper unit can be thought of as a traditional PWM controller on steroids.
Up front ahead of the traditional PWM charging function there is a BUCK converter that down converts higher DC voltage from the array to the DC voltage the PWM charging section needs to properly charge the battery. Part of that BUCK conversion stage is a "tracking" function that attempts to find the Vmp of the array. If the Array voltage drops to low the "BUCK" conversion is simply bypassed - it becomes a traditional PWM controller.
You will need to measure the ARRAY voltage and ARRAY current as well as the Battery Voltage and Battery Current to see how the buck conversion stage is functioning.
Running a 12Vdc nominal panel with a MPPT controller IMHO is a majority of the time a waste of $. A parallel wired array with 12Vdc nominal panels in MOST Cases is best suited for a PWM controller.
You were simply drawing current dropping the battery voltage which dropped the controller from float to a different charge stage.
MEASURE your array voltage / current give us the details needed to properly comment.
MPPT: Maximum Power Point Tracking
A proper unit can be thought of as a traditional PWM controller on steroids.
Up front ahead of the traditional PWM charging function there is a BUCK converter that down converts higher DC voltage from the array to the DC voltage the PWM charging section needs to properly charge the battery. Part of that BUCK conversion stage is a "tracking" function that attempts to find the Vmp of the array. If the Array voltage drops to low the "BUCK" conversion is simply bypassed - it becomes a traditional PWM controller.
You will need to measure the ARRAY voltage and ARRAY current as well as the Battery Voltage and Battery Current to see how the buck conversion stage is functioning.
Running a 12Vdc nominal panel with a MPPT controller IMHO is a majority of the time a waste of $. A parallel wired array with 12Vdc nominal panels in MOST Cases is best suited for a PWM controller.
You were simply drawing current dropping the battery voltage which dropped the controller from float to a different charge stage.
MEASURE your array voltage / current give us the details needed to properly comment.
