moosemaster
New member
- Joined
- Feb 24, 2021
- Messages
- 7
Hello,
I've been wrapping my head around MPP Solar gear and found the community here seem to have a solid grasp on the subject.
I am considering using 2x MPP Solar 8000W units in parallel, to manage a 16kW array. Providing I don't get a knock-off, these inverters tend to get pretty good reviews. Running without batteries is an impressive feature...
We're at a 58° northerly latitude - 16kW will see us through the short winter days for our basic needs - but kicks out a huge amount in summer.
The plan is to dump summer excess into heating elements - a large hot water thermal store - and a Rayburn range I'm converting; it has a bank of heat storage bricks that can hit 700°C.
I had been looking at keeping everything DC, but using AC from the inverter makes a few things simpler - in terms of selecting standard elements and off the shelf thermostats.
My head gets fuzzy when trying to figure out what size elements to install - and how I might program an inverter to dump to these when the batteries are charged.
For instance, if I attempt to power 16kW of elements (3.3Ω at 230v) - the theoretical maximum of the system - but the PV array is only kicking out 8kW... what happens? I imagine this all depends on the specific inverter. From what I see if the load is too big for the inverter - the inverter shuts down.
These are very cool and might be good to throw into the mix - MPPT controllers for connecting PV direct to heating elements: https://www.polskieprzetwornice.pl/skle ... -3500w-pro
Wondering how best to achieve this goal and perhaps overwhelmed by the number of options I could take...
Any thoughts appreciated!
I've been wrapping my head around MPP Solar gear and found the community here seem to have a solid grasp on the subject.
I am considering using 2x MPP Solar 8000W units in parallel, to manage a 16kW array. Providing I don't get a knock-off, these inverters tend to get pretty good reviews. Running without batteries is an impressive feature...
We're at a 58° northerly latitude - 16kW will see us through the short winter days for our basic needs - but kicks out a huge amount in summer.
The plan is to dump summer excess into heating elements - a large hot water thermal store - and a Rayburn range I'm converting; it has a bank of heat storage bricks that can hit 700°C.
I had been looking at keeping everything DC, but using AC from the inverter makes a few things simpler - in terms of selecting standard elements and off the shelf thermostats.
My head gets fuzzy when trying to figure out what size elements to install - and how I might program an inverter to dump to these when the batteries are charged.
For instance, if I attempt to power 16kW of elements (3.3Ω at 230v) - the theoretical maximum of the system - but the PV array is only kicking out 8kW... what happens? I imagine this all depends on the specific inverter. From what I see if the load is too big for the inverter - the inverter shuts down.
These are very cool and might be good to throw into the mix - MPPT controllers for connecting PV direct to heating elements: https://www.polskieprzetwornice.pl/skle ... -3500w-pro
Wondering how best to achieve this goal and perhaps overwhelmed by the number of options I could take...
Any thoughts appreciated!