Nick,
You said the microinverter only draws enough current... Could you explain how
this works? I primarily work with battery based systems and the charge
controllers that perform current limiting do so by shunting the excess current
as heat. How are you leaving current in the module?
Thank
I assume the device just operates the module away its MPP. That would reduce
its power output.
On Jan 29, 2013, at 8:48 AM, Larry Crutcher, Starlight Solar Power Systems
wrote:
Nick,
You said the microinverter only draws enough current... Could you explain
how this works? I primarily
Just to add another $.02:
I agree with Mr. Berdner, wearing out the electronics is a significant cost in
that scenario.
Energetically,
Christopher LaForge
Great Northern Solar
77480 Evergreen Road, Suite #1
Port Wing, WI 54865
715 774 3374
___
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Folks,
Anyone have an idea of what would happen if I connected a bench top DC
power supply with adjustable voltage and current to the pv inputs of a
microinverter that is also connected on the Ac side? Would something bad
happen as the inverter tries to run it's mppt on the ps?
Mark Frye
Mark:
Depends on the supply and the micro.
One or the other has to have isolation or bad things can happen.
Check with the manufacturers to see if the devices are isolated.
You could also use an isolation transformer ahead of the DC supply and be ok.
You might also need to float the ground on the
On 1/29/2013 7:20 AM, David Brearley wrote:
I assume the device just operates the module away its MPP. That would
reduce its power output.
That's exactly how it works. Picture this... When you disconnect the
PV completely,
it is at its open circuit Voc voltage and there is no current or
The idea of the electronics wearing outis a strange one. The inverters
are only at full capacity for a small amount of the time, at peak hours
which is only 2 to 4 hours a day, and only for part of that time if you
have clouds, and who doesn't?
Pushing them a little harder should not wear them
This is going back several years...
The Outback VFX series lacks the tight input current regulation of
the SW series, so the max AC amps in is really just a suggestion.
In many cases (and especially with these small generators) we want
to set the max amps
wrenches,
i am working on a design for an off grid camp. they need a new generator as the
one they have is a total pos.
i am interested in suggestions for a commercial grade, 10 to 15 kW propane
fueled unit. are kohler and onan still the best thing going or am i living in
the past?
Check out Gillette Generators
Made in Indiana
Jeremy
All Solar
Sent via BlackBerry. Sorry for typos and shorthand!
-Original Message-
From: toddc...@finestplanet.com
Sender: re-wrenches-boun...@lists.re-wrenches.orgDate: Tue, 29 Jan 2013
19:39:43
To:
Allan:
Could it be that the SW systems are protecting the generator with Generator
Support, and the Outback inverters are not?
William Miller
At 07:18 PM 1/29/2013, you wrote:
This is going back several years...
The Outback VFX series lacks the tight input current regulation of the SW
Those look interesting, especially the 20 Kw unit that is 1800 rpm.
How's auto start, is it two wire?
Does it have a no load draw for its electronics like the other newer
standby generators?
And finally does the warranty still apply for off grid use?
Thanks,
Ray Walters
What On 1/29/2013
I just found Generac's Off grid model 6 Kw. I know I've heard nothing
but $% about Generac, but this unit appears to actually be designed
specifically for off grid, and has a special oil cooling system and
runs at 2600 rpm. Anybody dare try one?
Ray Walters
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