I wanted to run by my first go at upgrading the AC / DC system on my 45
Hunter and see what the group thinks.
I am planning on replacing the 12V house bank with two 9kWhr
lithium ion
batteries that are in parallel for a total of 18kWhr of
storage and wrapping that in Outback
Power gear so I can run everything on the
boat off the
batteries and recharge with shore/generator
power when the
solar and
wind can’t keep up.
I am planning on using two VFXR2812A inverters and chargers on the 12V bank which will allow me to basically run everything on the
boat (3000w of
Air conditioning which is the biggest load and 1000w of other ‘entertainment gear’). Two FlexMax60 charge controllers that will be connected to four 350w
solar panels in a parallel configuration (shading may be an issue but I’ll oversize wire to reduce loss). I am also going to use the Flexnet and Mate3 to
monitor the inverters,
solar output and
wind generator output as well as relay trigger the onboard 8Kwh
generator to recharge the 12V house bank in the event that the solar /
wind isn’t keeping up and I get into a low SOC %. I will also be setting the wind charge controller for target voltages of 0.2VDC lower than the Outback
gear so theoretically the wind generation would shut down at say 90-95% SOC but the Outback chargers would be set to charge all the way up to 100% SOC
Here are my questions for the Outback experts.
1) Is the Flexnet and DC stents needed to
monitor the output of the inverters/chargers and solar charge controllers (included in my drawing) or can I log and monitor them individually with the built in
hardware of the unit?
2) I know I will need the stents and Flexnet to monitor the DC
battery bank as well as the wind generation and trigger the
generator on a low SOC but I didn't’ need to know if I need to wrap the inverters and solar charge controllers as well.
3) Will there be a conflict / error if both the charge controllers and inverters are trying to charge the
battery at the same time provided that all the charge parameters and voltages are set the same on all four units?
Do you foresee any issues accurately monitoring the SOC on a parallel Balqon
lifepo4 bank with the Flexnet / Mate 3?
Let me know what you guys think and if I am on the right track integrating all the outback gear. I’ll take your feedback and update my crude drawing with some additional fusing and disconnect/ transfer switching.
P.S. I know the drawing is crowded, I’ll clean it up after everyone’s feedback
Here is the link to my drawing
Much appreciated.
Sean
Linear Mode
Recent Discussions