Solar

It’s starting to get hot and as a result power outages are getting more frequent.  Last year with more than 12hour daily power outages and only 3 or 4 during daylight hours it was hard to get any work done.  This year however, we got a solar system setup and I hope that makes things go smoother.  There are still some quirks to work out, but we seem to have a system that is giving us consistent power through the day.  We have 960W array and a 48V 400ah battery pack.  The interesting bit is the charge controller, a Su-kam PCU 2k48.  I haven’t seen anything quite like it and it seems like a fairly ideal system for our situation.  There’s no net metering policy in Bangladesh, and even if there was, the grid power is so inconsistant that you would need some sort of battery backup anyway.   This unit ties together PV, grid and a batteries.  I haven’t tested inverter efficiency yet, but the design seems like about the most sane way to do it.  The documentation is fairly confusing, but there are two paths though it. There’s the PV -> Charge controller/Battery->  Inverter path which it prefers, but in the event that it can’t supply enough from that source, it fails over to the other path which is Grid power, also there is a battery charger which can charge your pack at the same time.