I must have missed this in your post!
https://solar.schneider-electric.com/solution/centralised-solar-power-plants-1500v/
You can navigate to their engineering team. I have found that once you
have a case number you communicate easily with e-mail.
--Dave
> I appreciate everyone's replies so
There are many large 250kw to multi mw battery based inverters that should
cover this project.
Most are coming out of china, so I don’t know if UL is something they have.
Princeton is one here in the USA, looks like 250kw and 500kwh is their largest
on the web site.
Sun Grow is one of many
I appreciate everyone's replies so far. First, we already have an
electronic soft start control, it just needs to be reprogrammed to
reduce the starting surge more. Second, we are way beyond 48v land. We
are in the realm of commercial scale inverters of at least 500 kW to 1.5
MW. They will
I know Schneider would love to sell you their cluster of 15 XW6848+ for a
max of 102KW and probably well over 300KW of surge.
Here is a link to their commercial offgrid. I do own their stock and other
companies also :) Their commercial engineers are pretty smart about this.
Try a three phase soft starter. Programmable start ramp time with relay
bypass. Not as expensive as a full blown VFD.
Frank BZP.
On 4/26/2018 9:17 AM, Dave Angelini Offgrid Solar wrote:
Agree with Daryl here at the end. You have to solve the motor surge with
variable frequency drive and go
Hello Ray,
I have a couple 60/100 kW SMA Sunny Island systems out there, systems with 100
kW generators, 400 kWh battery banks and generally token renewable inputs. I
feel with this configuration we close maxing out what can be done with 48VDC.
Getting into the MW scale scares me to be
A tough assignment, but Daryl has the right idea.
A company I used to work for did large off grid systems and would use something
they called a rotary capacitor (or something like that). It was a large
induction motor paralleled into the grid. It had a DC pony motor and some
synchro
We're not too worried about reducing the surge at this point; the
existing soft start controller is currently programmed for a fast start,
because their electrician was worried about motor damage if the
controller was set to limit current. It is currently surging to 700% of
run current, so we
Agree with Daryl here at the end. You have to solve the motor surge with
variable frequency drive and go 3 phase. If there is a reasonable cost to
use the grid I would not even bother with quoting an off the grid
solution. It is what the grid is best at and batteries are the wrong way
for this.
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