Frank Blue
New Member
Hi everybody,
background:
First post here, I was a professional in solar since 2007, now passionate and some freelance work.
I developed my house and is now very smart, I optimized the load use to the point she needs few kWh when solar is down, now ready to install a battery (first time in history that is really convenient, DIY here have a return time of investment around 2years).
my solar:
because I have a very old pv I am paid (a lot, 48c) to just produce (not inserting into grid, just produce) via a counter on the exit of my pv ongrid inverter.
I need to charge battery from 220V because I should pass solar energy via the production counter to be paid.
Everything in my house is mqtt controlled, influxdb stored. I have all kinds of sensors and actuators (13 esp32 I personally programemd are running now).
The goal of my house is having high loads only when solar is available (or just grid driven) so I can have smallest battery possible. Actually I run my house sucking around 3kWh a day from the grid during the night, mostly lights and technology (pc server power supplies chargers etc).
the problem:
I was thinking to use a simple 12V hybrid inverter with 4s 280Ah, that will give the <300W my house needs for lights and technology. I need to control the charge amps (To follow the pv production).
From my research I found easun powmr powland, probably all made from srne..I found something on github but wish to know if some of you had personal experience in controlling the charge amps with an esp32 or similar.
Is there another solution to control charge amps that comes to your mind? the bulk of my house is 12V (like a big RV) so I can avoid using the inverter for lights and technology..I just need a charger I can control.
I have an rv and there I use a dcdc 50A..I monitor it with an esp32 but can't control charge amps..if I could find something similar I can use a power supply with a dcdc controlled by an esp32.
Clearly an hybrid inverter is better because is future proof. I hope with time the battery cost will drop and can cover also the holes during the day due to high loads (actually is not convenient, I plan to have only 1 charge/discharge cycle a day on the lights and tech segment that is almost constant power). Bad news is cheap hybrid inverter I know sucks 25W..that is 600Wh a day..20% of a 12V 280Ah bank.
I have been long, thank you for the time you dedicated to this
background:
First post here, I was a professional in solar since 2007, now passionate and some freelance work.
I developed my house and is now very smart, I optimized the load use to the point she needs few kWh when solar is down, now ready to install a battery (first time in history that is really convenient, DIY here have a return time of investment around 2years).
my solar:
because I have a very old pv I am paid (a lot, 48c) to just produce (not inserting into grid, just produce) via a counter on the exit of my pv ongrid inverter.
I need to charge battery from 220V because I should pass solar energy via the production counter to be paid.
Everything in my house is mqtt controlled, influxdb stored. I have all kinds of sensors and actuators (13 esp32 I personally programemd are running now).
The goal of my house is having high loads only when solar is available (or just grid driven) so I can have smallest battery possible. Actually I run my house sucking around 3kWh a day from the grid during the night, mostly lights and technology (pc server power supplies chargers etc).
the problem:
I was thinking to use a simple 12V hybrid inverter with 4s 280Ah, that will give the <300W my house needs for lights and technology. I need to control the charge amps (To follow the pv production).
From my research I found easun powmr powland, probably all made from srne..I found something on github but wish to know if some of you had personal experience in controlling the charge amps with an esp32 or similar.
Is there another solution to control charge amps that comes to your mind? the bulk of my house is 12V (like a big RV) so I can avoid using the inverter for lights and technology..I just need a charger I can control.
I have an rv and there I use a dcdc 50A..I monitor it with an esp32 but can't control charge amps..if I could find something similar I can use a power supply with a dcdc controlled by an esp32.
Clearly an hybrid inverter is better because is future proof. I hope with time the battery cost will drop and can cover also the holes during the day due to high loads (actually is not convenient, I plan to have only 1 charge/discharge cycle a day on the lights and tech segment that is almost constant power). Bad news is cheap hybrid inverter I know sucks 25W..that is 600Wh a day..20% of a 12V 280Ah bank.
I have been long, thank you for the time you dedicated to this
