Hello everyone.
This may have been covered before, but I am scratching my head a little to try and figure out the best way to manage my system.
Currently I have 3 100w Renogy panels on my roof, connected in series to my Tracer 3215RN 30A MPPT Charge controller. This controller is working wonderfully for me, and has plenty of room for me to expand in the future. I am also using the serial data protocol to log my system's stats, and give me real time monitoring capability through a raspberry pi. (http://69.180.190.146:8081/solar/) at the moment, its pretty nifty.
I am using this system to charge a pair of 12v 140AH deep cycle AGM batteries that were previously destined to live their life in a floor scrubber. I am running my system at 24v
This energy is currently used to power my Ham Radio station, my raspberry pi's, my cable modem/router etc. In the winter, this balance works out well, but I am planning on expanding the system in the future, and I am optimistic that I will be producing a much greater amount of power this summer, so I would like to find a good way to send the excess to the grid.
As most of you are well aware, charging batteries happens in multiple stages. During the bulk charge state, every watt of power produced by the panels is put into the battery. Once the battery's voltage rises to a set threshold, the charging circuit will reduce the charge current, holding charge voltage constant. After the charge current is reduced to a specific percentage, the battery is simply given a float charge.
What I would like to do is to find some good way to take the power not being used by the controller for battery charging, once the charger reaches it's absorption phase, and send this energy to a grid tied inverter.
The basic idea being to properly charge the batteries, and keep them topped off every day, and what energy isnt used by the charger is sent to the grid.
Anyone have any idea how I can accomplish this goal, preferably without replacing my MPPT charge controller?
Thanks for the help.
This may have been covered before, but I am scratching my head a little to try and figure out the best way to manage my system.
Currently I have 3 100w Renogy panels on my roof, connected in series to my Tracer 3215RN 30A MPPT Charge controller. This controller is working wonderfully for me, and has plenty of room for me to expand in the future. I am also using the serial data protocol to log my system's stats, and give me real time monitoring capability through a raspberry pi. (http://69.180.190.146:8081/solar/) at the moment, its pretty nifty.
I am using this system to charge a pair of 12v 140AH deep cycle AGM batteries that were previously destined to live their life in a floor scrubber. I am running my system at 24v
This energy is currently used to power my Ham Radio station, my raspberry pi's, my cable modem/router etc. In the winter, this balance works out well, but I am planning on expanding the system in the future, and I am optimistic that I will be producing a much greater amount of power this summer, so I would like to find a good way to send the excess to the grid.
As most of you are well aware, charging batteries happens in multiple stages. During the bulk charge state, every watt of power produced by the panels is put into the battery. Once the battery's voltage rises to a set threshold, the charging circuit will reduce the charge current, holding charge voltage constant. After the charge current is reduced to a specific percentage, the battery is simply given a float charge.
What I would like to do is to find some good way to take the power not being used by the controller for battery charging, once the charger reaches it's absorption phase, and send this energy to a grid tied inverter.
The basic idea being to properly charge the batteries, and keep them topped off every day, and what energy isnt used by the charger is sent to the grid.
Anyone have any idea how I can accomplish this goal, preferably without replacing my MPPT charge controller?
Thanks for the help.
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