chilly2
New Member
- Joined
- Sep 14, 2021
- Messages
- 155
Hello!
My inverter has a single +/- DC input and can be connected to either PV or a battery. It has built in MPPT, and all it cares about is that the DC voltage meets the startup minimum of 49V. It is currently connected to a 1500W 60V (2S3P) PV, no battery.
The PV voltage with no load is 60V. As expected with hot weather and as load increases voltage drops some. When load is high it drops quite a bit, sometimes enough to go below the startup minimum, and this causes the inverter to reboot. It only takes a moment to get back to where it was, but I'm sure it can't be good for it to reboot a lot. I can't reconfigure the PV to 90V (3S2P) because the upper VOC limit on the inverter is 90V.
If I were to buy a separate charge controller and a 48v lifepo4 battery (so constant 51.2V) would this have the effect of smoothing out voltage so the inverter would no longer reboot a lot under high load?
Advice welcome!
My inverter has a single +/- DC input and can be connected to either PV or a battery. It has built in MPPT, and all it cares about is that the DC voltage meets the startup minimum of 49V. It is currently connected to a 1500W 60V (2S3P) PV, no battery.
The PV voltage with no load is 60V. As expected with hot weather and as load increases voltage drops some. When load is high it drops quite a bit, sometimes enough to go below the startup minimum, and this causes the inverter to reboot. It only takes a moment to get back to where it was, but I'm sure it can't be good for it to reboot a lot. I can't reconfigure the PV to 90V (3S2P) because the upper VOC limit on the inverter is 90V.
If I were to buy a separate charge controller and a 48v lifepo4 battery (so constant 51.2V) would this have the effect of smoothing out voltage so the inverter would no longer reboot a lot under high load?
Advice welcome!
