msdmaddog1
New member
- Joined
- Nov 1, 2019
- Messages
- 6
Hi my name is Tobias,
iam pretty new to this topic, but i read a alot information on the forums. iam playing with the idea of retrofitting a DYI LiFePo4 Battery Bank to my present Grid Tied solar system. I know its mainly about DYI Batteries in this forum here, but i dont see a better place to discuss anywhere else.
current situation:
- 14.4kWp Grid Tied Solar system with 3phases
- Huawei SUN2000 12kW
- Solarlog 300 (Data Collecting and S0 House Power Draw reading)
- Energy Meter with S0 Interface reporting overall House powerdraw to Solarlog
- Feed In allowed but no good rewards. 2 way energy counter is installed (mandatory by electric company).
- UPS functionality i dont need
central power management control device:
- Homematic (control all possible 1phase / 3Phase devices) upon remaining solar power. Data is collected from Solarlog via Webserver
- EV Charging station is set to possible remaining solar power via Homematic script
Retrofit Idea:
- Retrofit AC Coupled Battery Bank 1phase for driving power devices which draws power over night (Heat Pump in Winter / EV charging (low speed <2kW in rare cases). Batteries should be recharged automatically when sun is shining and remaining solar is left.
- Startup Battery Build size 5kWh system with add in 5kwH Steps up to 20-30kWh
planned components:
- LiFePo4 Prismatic Cells BLS 3.2V 100AH 16x
- 48 V Setup should be the best (due to system size target of 20kWh)
- Inverter / Charger - Victron Energy MultiGrid oder Multiplus 48V / 3kW
- Victron Venus GX ?
- BMS DeliGreen 16S 100A (using max. 60A)
- Battery Shunts
Questions:
- Does these components make sense ?
- i dont know how to control the charge and recharge of the of the inverter charger upon solar and house power draw.
i have the actual house power draw / actual solar power via the present energy meter in my homematic control device available.
can i set these parameters on the venus gx to control the charging of the battery ? this is not explained anywhere.
- Is this planned setup in the configuration decribed easy to extend with +5kwH batteries just by adding additional battery + BMS + Cabling ?
- Please have a look of the grid plan i attached of the current system and leave our comments.
Thank you for taking time
regards Tobias
iam pretty new to this topic, but i read a alot information on the forums. iam playing with the idea of retrofitting a DYI LiFePo4 Battery Bank to my present Grid Tied solar system. I know its mainly about DYI Batteries in this forum here, but i dont see a better place to discuss anywhere else.
current situation:
- 14.4kWp Grid Tied Solar system with 3phases
- Huawei SUN2000 12kW
- Solarlog 300 (Data Collecting and S0 House Power Draw reading)
- Energy Meter with S0 Interface reporting overall House powerdraw to Solarlog
- Feed In allowed but no good rewards. 2 way energy counter is installed (mandatory by electric company).
- UPS functionality i dont need
central power management control device:
- Homematic (control all possible 1phase / 3Phase devices) upon remaining solar power. Data is collected from Solarlog via Webserver
- EV Charging station is set to possible remaining solar power via Homematic script
Retrofit Idea:
- Retrofit AC Coupled Battery Bank 1phase for driving power devices which draws power over night (Heat Pump in Winter / EV charging (low speed <2kW in rare cases). Batteries should be recharged automatically when sun is shining and remaining solar is left.
- Startup Battery Build size 5kWh system with add in 5kwH Steps up to 20-30kWh
planned components:
- LiFePo4 Prismatic Cells BLS 3.2V 100AH 16x
- 48 V Setup should be the best (due to system size target of 20kWh)
- Inverter / Charger - Victron Energy MultiGrid oder Multiplus 48V / 3kW
- Victron Venus GX ?
- BMS DeliGreen 16S 100A (using max. 60A)
- Battery Shunts
Questions:
- Does these components make sense ?
- i dont know how to control the charge and recharge of the of the inverter charger upon solar and house power draw.
i have the actual house power draw / actual solar power via the present energy meter in my homematic control device available.
can i set these parameters on the venus gx to control the charging of the battery ? this is not explained anywhere.
- Is this planned setup in the configuration decribed easy to extend with +5kwH batteries just by adding additional battery + BMS + Cabling ?
- Please have a look of the grid plan i attached of the current system and leave our comments.
Thank you for taking time
regards Tobias