PWM input voltage, Xantrex C40 test video
here is the Video link, the fluke is plugged directly into the Solar panel drop wiring before it enters the controller right above the panel input protection fuse, that i use for a disconnect just c...
Forum Discussion
there is a lot of talk about "voltage avg"
about voltage being low when controller is pulsed on and high when controller is pulsed off.. do any of you know what that means
it means that 14.xx v is the applied voltage to the system
and that 16.xx~17.xx is the applied panel voltage
stop and think about regular 60Hz 120vac.. where everybody does thee volt-amps aka watts calculations
do you realize that is the RMS voltage aka Relative Mean System volts
that the peak to peak of 120vac is 177vac
that 120v is the Average, what is the"mean" distance of something, another way of saying average
this whole discussion, was because people couldn't believe the panel output was not down to controller output
i provide the readings and the video and still dis-belief
its all about the controller and enough solar watts to supply amps for the batteries
i know what my meters say.. its there for you to see
you try to explain it away as an optical illusion or misunderstanding of whats going on
yet its exactly what i said it is once the panel voltage gets higher than the set point, it starts controlling the output voltage, no matter what level the amps are at..
its that simple
the controller is not wasting any more amps than any other PWM controller
that is irrelevant logic
in my case the blue sky MPPT gave me only a little bit more avg ampHrs with previous panel wattage than the C-40
what has given me a boost and made a change in the charging profile is having more wattage so the Solar can raise voltage earlier
remember..all i did was make a statement in some other thread about an observation of 17v input 14.4v output
i wasn't asking any questions, how or why, i wasn't complaining, and i wasn't bragging,
and the questions started coming ..saying NOT possible...PWM doesn't work that way...etc..
about voltage being low when controller is pulsed on and high when controller is pulsed off.. do any of you know what that means
it means that 14.xx v is the applied voltage to the system
and that 16.xx~17.xx is the applied panel voltage
stop and think about regular 60Hz 120vac.. where everybody does thee volt-amps aka watts calculations
do you realize that is the RMS voltage aka Relative Mean System volts
that the peak to peak of 120vac is 177vac
that 120v is the Average, what is the"mean" distance of something, another way of saying average
this whole discussion, was because people couldn't believe the panel output was not down to controller output
i provide the readings and the video and still dis-belief
its all about the controller and enough solar watts to supply amps for the batteries
i know what my meters say.. its there for you to see
you try to explain it away as an optical illusion or misunderstanding of whats going on
yet its exactly what i said it is once the panel voltage gets higher than the set point, it starts controlling the output voltage, no matter what level the amps are at..
its that simple
the controller is not wasting any more amps than any other PWM controller
that is irrelevant logic
in my case the blue sky MPPT gave me only a little bit more avg ampHrs with previous panel wattage than the C-40
what has given me a boost and made a change in the charging profile is having more wattage so the Solar can raise voltage earlier
remember..all i did was make a statement in some other thread about an observation of 17v input 14.4v output
i wasn't asking any questions, how or why, i wasn't complaining, and i wasn't bragging,
and the questions started coming ..saying NOT possible...PWM doesn't work that way...etc..
