stribution.solar
From: RE-wrenches on behalf of
Jason Szumlanski via RE-wrenches
Sent: Monday, October 30, 2023 8:32 AM
To: RE-wrenches
Cc: Jason Szumlanski
Subject: Re: [RE-wrenches] AC Coupling
I read through this thread, and I don't think one important as
422
>
> 805-438-5600
>
> www.millersolar.com
>
> CA Lic. 773985
>
>
>
>
>
> *From:* RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] *On
> Behalf Of *Jason Szumlanski via RE-wrenches
> *Sent:* Monday, October 30, 2023 7:33 AM
> *To:* RE-w
ischarged very carefully. I do not believe
> AC-coupled charging is a good way to charge lithium batteries, or any
> battery.
>
>
>
> William Miller
>
>
>
> Miller Solar
>
> 17395 Oak Road, Atascadero, CA 93422
>
> 805-438-5600
>
> www.millersolar
www.millersolar.com
CA Lic. 773985
*From:* RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] *On
Behalf Of *Jason Szumlanski via RE-wrenches
*Sent:* Monday, October 30, 2023 7:33 AM
*To:* RE-wrenches
*Cc:* Jason Szumlanski
*Subject:* Re: [RE-wrenches] AC Coupling
I read
of 100% AC coupled PV, but
> these days there are very few legitimate concerns or issues... Most if not
> all of which disappear with a 10% - 60% DC coupled system.
>
> Thanks,
> Kienan
>
>
> *Green-Go Solar Wholesale Distribution*
> *maxfieldso...@hotmail.com *
>
ieldso...@hotmail.com<mailto:maxfieldso...@hotmail.com>
(801) 631-5584 (Cell)
www.distribution.solar
From: RE-wrenches on behalf of
Jerry Shafer via RE-wrenches
Sent: Saturday, October 28, 2023 11:14 PM
To: William Miller ; RE-wrenches
Cc: Jerry Shafer
Subje
inverters
> is a crude affair. I am not a fan.
>
>
>
> William
>
>
>
> Miller Solar
>
> 17395 Oak Road, Atascadero, CA 93422
>
> 805-438-5600
>
> www.millersolar.com
>
> CA Lic. 773985
>
>
>
>
>
> *From:* Jay [mailto:jay.p
t:* Saturday, October 28, 2023 1:58 PM
*To:* will...@millersolar.com; RE-wrenches
*Subject:* Re: [RE-wrenches] AC Coupling
I’m going to both agree and disagree
Agree The older inverters ( Schneider, Outback, etc) your drawing is
correct.
Disagree For many new inverters ( sol ark, ev4, fortress) t
And just to muddy the waters a little, 2023 NEC uses AC Connected and DC
connected wording in place of coupled. Same concept, new name.
On Sat, Oct 28, 2023 at 5:01 PM Roland - RES via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:
> Agreed and we'll understand the differences, all of
Agreed and we'll understand the differences, all of our SMA SI systems utilize both dc charging and AC coupled charging.Roland ShackelfordPresident / OwnerNABCEP PVIP #091209-162Office 808.775.7410Mobile 808.938.9239Power Solutions for Generations Renewable Energy Services, Inc." Where there is
I’m going to both agree and disagree Agree The older inverters ( Schneider, Outback, etc) your drawing is correct. Disagree For many new inverters ( sol ark, ev4, fortress) they bring ac coupling into the inverter directly. Usually on the generator input and not in the backup loads panel. And I
I agree totally with your drawings.
On Sat, Oct 28, 2023 at 4:17 PM William Miller via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:
> Friends:
>
>
>
> I am starting to get the impression that there is a diversion on the
> understanding of the definition of AC coupling within the
Sam,
Thanks for pointing me in that direction. It looks like you can update some
of the grid protection settings, although I am not sure if that will allow
for freq-watt control. My LG rep told me to use CA rule 21 grid profile,
but I am not sure if there is something like that on the old A series
Good Morning, Dave,
Take a look at this pdf and see if the info about setting up "Grid
Protection" gets you anywhere. Starting on page three it shows how to make
the Vmin/max and Fmin/max for screened inverters. What I can't verify for
you is whether the A series has the same menu structure as
I can use in the book as a universal explanation of how this
> works? It can be SMA documentation, or other ref. You can reply here if
> it's useful to the list, and/or contact me off-line.
>
> Thanks! – Windy
>
> On Dec 1, 2022, at 5:47 PM, re-wrenches-requ...@lists.re-wrenches.or
e.
Thanks! – Windy
> On Dec 1, 2022, at 5:47 PM, re-wrenches-requ...@lists.re-wrenches.org wrote:
>
> From: Harry Mahon <mailto:michael.ma...@sma-america.com>>
> Subject: Re: [RE-wrenches] AC Coupling Standard?
> Date: December 1, 2022 at 5:47:18 PM MST
> To: RE-wren
Jeremy
With a mate 3 and a hub. Wire the out- puts into their own breaker in a
service panel then out to the critical loads panel
- Original Message -
From: Jeremy Rodriguez
To: RE-wrenches
Sent: Friday, December 28, 2018 12:30 PM
Subject: [RE-wrenches] AC Coupling with
Wrenches
You can still AC couple Outback, they just eliminated tha option because of
breaker issues but it can still be done using contactors all set to
normally open and configured by DC Voltage. With Outback there is no real
limit to battery capasity like you have with both the new SMA sunny boy
I've liked the StorEdge design of SolarEdge since it was first introduced a
few years ago, but have never done it even seen an instant with it. What
are others experience with it, especially compared to AC coupled battery
backup solutions?
Howie
On Jul 25, 2018 8:18 PM, "Scot Arey" wrote:
Yes I
Yes I had also heard from Outback that AC Coupling not supported.
Too bad because the AC coupling load center was slick setup and integration.
Scot
Get Outlook for Android
On Wed, Jul 25, 2018 at 10:29 AM -0600, "Kelly Keilwitz, Whidbey Sun & Wind"
wrote:
Larry,I
Larry,
I recommend considering retrofitting the SolarEdge “StorEdge” Li-ion battery.
It’s a high-voltage battery on the PV side of the inverter. We have a few out
there now for a few months without a problem. Really like the design concept of
the storage on the PV side, increasing system
Kirpal
Thanks for the recommendations
If you have a diagram that would be most helpful and generous
What Lithium Battery are you using with this configuration?
Much Appreciated
Larry
Larry Brown
Sun Mountain
845-657-8096
sunmount...@netstep.net
On Jul 19, 2018, at 11:15 AM, Kirpal wrote:
Larry
I have had very good luck with Outback both with the FX and the newer
Radian systems, have not tried this with the new "R" inverter system, we
have used the contactors to reduce production once the batteries are full
in the off gird application. Simple and strait forward and been good
Jerry
Larry
Outback Radians work great.
peter
- Original Message -
From: "Larry Brown"
To: "RE-wrenches"
Sent: Thursday, July 19, 2018 10:07 AM
Subject: [RE-wrenches] Ac Coupling
Does anyone have a recommendation on a battery based inverter to AC Couple
with a Solar Edge 11400A-US
Larry--Forgot to add on the original post--you would need three Magnum 4448s to
work w the 11.4 SolarEdge. Bill Hennessy
Berks Solar, LLC
371 Centennial Rd
Mertztown, PA 19539
o 610 682 4300
c 484 560 4666
NABCEP certified installer
PA contractor #44411
www.berkssolar.com
From: Larry
Larry.Outback Radian would work fine but you would need 2 of the 8kW
inverters for your ~11kW GT inverter. Outback recommends a maximum 75%
loading ratio when AC coupling. We have used a simple solid state relay
controlled by the Aux Out of the Radian to turn off one leg of the
SolarEdge
I am working with a similar situation. It looks like the Tesla Powerwall
will work.
Kevin Eigel
Ecohouse Solar
On Thu, Jul 19, 2018, 10:07 AM Larry Brown wrote:
> Does anyone have a recommendation on a battery based inverter to AC Couple
> with a Solar Edge 11400A-US Inverter that is already
You could ask them? I know the XW+ works fine with the SMA TL series grid
inverters. Phone: +1 866-519-1470
Email: re.techsupp...@schneider-electric.com --Dave
> Does anyone have a recommendation on a battery based inverter to AC Couple
> with a Solar Edge 11400A-US Inverter that is already
I checked into the PRI strategy a few months back. An Outback
applications engineer responded that while they were collaborating with
SolarEdge at one time on the method, they don't recommend it any longer
and were going to pull the tech note. The response also questioned
whether SolarEdge
Hi Gary,
These Solar Edge inverters can use radio ripple control to change power
output. Its a simple control strategy that allows control of the power
output presumably from a grid-operator. You would need to enable the
RRCR. Here is a paper about that
Maverick:
Thanks for responding. You've been very helpful in the past with
my battery based solution questions.
Daily load demand from the Protected Loads Panel is about 10kWh.
With 5 average daily peak sun hours, and 75% charging efficiency,
the
How many kWh are you shooting for?
> On Oct 17, 2016, at 9:54 PM, Gary Willett
> wrote:
>
> Esteemed Wrenches:
>
> Anyone have experience setting up AC coupling with SolarEdge and the Outback
> Radian?
>
> I have a client with a SolarEdge SE1A-US
It looks like way too much power to AC couple
with a 4KW Radian. Be sure to talk to an Outback
engineer in great detail before using the GSLC175AC-120/240.
At 10:54 PM 10/17/2016, you wrote:
Esteemed Wrenches:
Anyone have experience setting up AC coupling
with SolarEdge and the Outback
Brian,
Thanks, it came through perfectly! Am I correct to assume that the SE
inverter will only respond to a PRI Port input signal to ramp output up and
down and not a frequency shift? I'll have to check if there is someway to
use that function with the XW. When I spoke with SolarEdge support,
If the inverter were in search, I would think that there would be no AC
power produced by
the micro inverters at all because of anti-islanding.
boB
On 9/21/2015 4:40 PM, Jay wrote:
Nope wasn't in search when I had flicker.
If the loads were greater than the enphase production then no
Nope wasn't in search when I had flicker.
If the loads were greater than the enphase production then no flicker.
If it was "charging" then there was flicker.
My vfx 3524 is 8+ years old, but I don't think that would be a factor.
Jay.
Sent from my iPhone
> On Sep 21, 2015, at 12:46 PM,
WrenchesCheck and confirm that the OB is not set in search, yhis will cause
issues like this.Jerry
Sent from my Verizon Wireless 4G LTE smartphone
Original message
From: jay
Date: 09/21/2015 6:58 AM (GMT-10:00)
To: RE-wrenches
I'll tell you exactly how to do this, if I understand the SolarEdge
documentation. I am working on a similar project, but using a contactor to
disconnect three 10KW String inverters.
Forget the Radio Ripple. The SolarEdge has a simple four line control
system. SMA has the same thing on it's Power
Hi Mac,
It looks like they are doing all that work on the AC side.
If you do the DC side, you'll lose the comm from the optimizers causing error
messages etc.
For the few times a year this will actually need to regulate, depending on the
battery inverter I'd install a AC relay and kill the
Mac
Outback makes a AC couple ready radian wired box its nice because it
already has the relay to kill the PV system along with the programming to
make it work
Jerry
On Wed, Dec 10, 2014 at 6:04 AM, jay peltz j...@asis.com wrote:
Hi Mac,
It looks like they are doing all that work on the AC
Question
Is the Hz shift/ power reduction included/required in all battery less
inverters?
Thanks
Jay
Peltz power___
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From:
jay peltz j...@asis.com
To:
RE-wrenches re-wrenches@lists.re-wrenches.org,
Date:
12/10/2014 10:13 AM
Subject:
Re: [RE-wrenches] AC coupling SolarEdge
Sent by:
RE-wrenches re
Since grid-tie inverters sell back with a power factor of 1, the load
~should~ be entirely resistive and
not inductive or capacitive so a appropriately rated relay contacts
~should~ be fine.
Except maybe if the inverter is designed to supply VARs like the last
Solar-Pro magazine talks
Hi Drake,
I think you can put a power diode in parallel to the gt inverter that can
conduct that inductive current if you need to. However, I think BoB is
correct, there should just be induction of the wiring itself for most
grid-tied inverter. The relay engineer recommended this diode for a DC
with his comments (below).
Dan
On Mon, 6/16/14, Mac Lewis maclew...@gmail.com wrote:
Subject: Re: [RE-wrenches] AC Coupling Relays
To: RE-wrenches re-wrenches@lists.re-wrenches.org
Date: Monday, June 16, 2014, 10:59 AM
Hi Drake,
I think you can put
Hi Mac--
We've installed four Magnum 4048-Fronius AC coupled systems, ranging from the
older Fronius IG through the later Fronius IG Plus with arc fault. One system
had three Magnums, another two Magnums and two were single Magnums. We had a
small glitch on the two Magnum system on one occasion
We did one and it seems to work fine. We AC
coupled a pair of Sunny Islands to a Fronius IG
Plus 10.0-1 UNI. There might be a problem if you
are using a Radian with the Fronius.
At 04:44 PM 4/16/2014, you wrote:
Hello wrenches,
Has anyone had good success AC coupling with
Fronius
Have one with dual Xantrex XWs and a IG plus 10.0. Working good
Jeremy Rodriguez
All Solar
CO USA
- Original Message -
From: Drake
To: RE-wrenches
Sent: Thursday, April 17, 2014 9:15 AM
Subject: Re: [RE-wrenches] AC coupling with Fronius
We did one and it seems to work
Mac,
I have a customer with 17kW on 3 Fronius inverters. He connected a cheap 40kW
china diesel generator during a week long power outrage. I was amazed when he
told me they sync'd up with no problems.
Larry
On Apr 16, 2014, at 1:44 PM, Mac Lewis maclew...@gmail.com wrote:
Hello wrenches,
We have done a number of off grid AC coupling projects over the last eight
years. We have found they are successful with anything that comes close to a
true sign wave, including some of the old Trace inverters. I would be
careful to not come too close to the wattage of the source inverter, and
Hi Lars
I'm curious what you found those efficiency differences to be?
And how are you measuring inverter charging efficiency in the bi directional
mode
Thanks
Jay
Peltz power
Sent from my iPhone
On May 28, 2013, at 10:53 AM, lars Ortegren l...@cal-solar.com wrote:
We have done a
Lars,
With the old Trace inverters? Were they 4.01 firmware or
4.10/4.30? Did you use the GTI? How did you AC couple them - which
input/output terminals?
And what was the rationale in an off grid scenario - distance to
sun in a shady forest?
I
I also saw that webinar. We had just coupled a Fronius 10K to a pair
of Sunny Islands. It seems to be working fine. It is a backup
system, so we have only tested it. SMA tech support assured me it
would work before we bought the system.
Is the Outback wave form unique in any way, causing
Maybe their position has changed, but
the last time I looked into AC coupling a Fronius inverter I was
told by Fronius that it would void their warranty. Has that policy
changed?
Regards,
Gary Willett
Icarus Engineering LLC
It seems a little vague on that point. Talking to Fronius tech
support did not produce a definitive answer. I think so long as the
system is basically grid tied, it likely wouldn't. In the webinar,
the presenter said that Fronius wasn't worried about the AC relay
being switched on and off by
Jeremy
I have a system on my house with 6 kW of grid tie inverters AC coupled to an
Outback Radian, which is actually two 4 kW inverters in one box. It works
great in full sun with the grid off. I don't see a problem with what you are
doing.
David Katz
Sent from my iPhone
On May 25, 2013, at
Hi Jeremy,
FYI: I heard that Fronius is the most sensitive of the GT inverters and so the
most difficult to fool or keep on in an AC coupled system. That was from the
Magnum AC Coupling webinar.
Blessings,
Kelly
Kelly Larson
Electrical Engineer
NABCEP Certified Solar PV Installation
What brand of inverter are your using for the off-grid inverter. SMA has
addressed this issue with the Sunny Island. I'm looking at an all-SMA
option for a new installation, and also an SMA-Enphase AC Coupled system,
so I'll be interested to see what others with more AC coupling experience
have to
Hi Jeremy
Seems like a perfect place for the 600v controller from xantrex
Jay
Peltz power.
Sent from my iPhone
On Mar 18, 2013, at 7:23 PM, Jeremy Rodriguez- All Solar Inc.
allso...@scswifi.net wrote:
Wrenches,
Here is my situation: GT string inverter - 3 strings of mods, 10KW DC.
(many years of data comms experience B4 solar)
From: re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of mac Lewis
Sent: Thursday, October 04, 2012 9:41 PM
To: RE-wrenches
Subject: Re: [RE-wrenches] AC coupling and Outback inverters
Hi
-wrenches.org] On Behalf Of David Katz
Sent: Friday, October 05, 2012 2:11 AM
To: RE-wrenches
Subject: Re: [RE-wrenches] AC coupling and Outback inverters
Hi Kirk,
All of the Outback inverters will work AC coupled (GT and FX) as will any
bi-directional H-bridge type inverter. I have used old
, October 05, 2012 2:11 AM
To: RE-wrenches
Subject: Re: [RE-wrenches] AC coupling and Outback inverters
Hi Kirk,
All of the Outback inverters will work AC coupled (GT and FX) as will any
bi-directional H-bridge type inverter. I have used old Trace SW’s,
SunnyIsland, Apollo TSW, Magnum AE and now I
Dana,
Please contact me off list and I'll get you a couple of drawings...
They are too big for the list.
If anyone else wants them I'll send them to you to.
Also keep and eye on Solar Pro, we just finished a good article on ac coupling.
Steve Higgins
Sales Application Engineering Mgr
African
My query to Enphase on the subject and there response
Hello,
Here is a technote which talks about how to use the Xantrex XW with a grid
tied inverter.
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Kent
Osterberg
Sent: Saturday, September 03, 2011 1:47 PM
To: al...@positiveenergysolar.com; RE-wrenches
Subject: Re: [RE-wrenches] AC Coupling
Brian,
Is this the drawing?
Magnum ac coupled diagram
http://www.google.com/url?sa=tsource
One should also factor in the availability of generator fuel if an extended
outage occurs. In some communities, the fuel will be scarce or non-existent,
especially if significant damage occurs to fuel transporation and storage
infrastructure.
brbrbr--- Original Message ---
On
volt section. The
only way this can be made up is to overcharge the 12-24 volt section such that
the 12 volt get charged.
DT
From: R Ray Walters r...@solarray.com
To: RE-wrenches re-wrenches@lists.re-wrenches.org
Sent: Saturday, September 3, 2011 6:18 PM
Subject: Re: [RE-wrenches] AC Coupling
ber 02, 2011 4:45 PM
To: RE-wrenches
Subject: Re:
[RE-wrenches] AC Coupling
Brian,
Could you speak a bit more to this, please? My understanding is that
the need with a string (or, I suppose, micro-) inverter and a
battery-based inverter is for a way to disconnect full batteries from
be
Hi Jay;
I agree, for long outages, a generator is the way to go. It just doesn't make
sense to have 5 days of lead acid battery sitting there for years waiting to be
used once or twice in an epic ice storm.
On the other hand, many places have very unreliable grid power with short
outages every
Yes, there should be an uptick in at least inquiries about solar backup here in
the NE.
I went to a site in CT where I was called in to see why the customer was upset
about why her backup batteries went dead when she was told the solar would stay
on line and charge them during what is now week
Hi Larry,
Magnum MS PAE inverters do indeed shift the inverter output frequency
when the battery is full in order to disconnect grid-tied inverters used
in AC coupled systems. It was designed to work in conjunction with a DC
diversion load - which is recommended if the system is larger than a
Brian,
Could you speak a bit more to this, please? My understanding is that
the need with a string (or, I suppose, micro-) inverter and a
battery-based inverter is for a way to disconnect full batteries
from being overcharged when the grid is down and sell is disabled.
...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Allan
Sindelar
Sent: Friday, September 02, 2011 4:45 PM
To: RE-wrenches
Subject: Re: [RE-wrenches] AC Coupling
Brian,
Could you speak a bit more to this, please? My understanding is that the
need with a string (or, I
Of Brian Faley
Sent: Friday, September 02, 2011 5:21 PM
To: al...@positiveenergysolar.com; RE-wrenches
Subject: Re: [RE-wrenches] AC Coupling
Hi Allen,
I'll try to describe the typical AC coupled system as well as I can.
In such a system, a NON-grid tied battery based inverter (i.e. Magnum MS PAE
HI Larry,
I'll chime in here with the other option, ie no batteries at all.
Instead its a back up generator.
I've found them to be much cheaper, and if you are expecting a longer outage
then weather is usually a problem ie its overcast and therefor you'll need a
backup for your battery system
Allan,
You're not the only one with your eyes spinning here. Let me clarify a bit as I
think you are making it more complicated than it is. There is no need for a
manual switch. The GT inverters feed into the sub panel which is being fed by
the Magnum. Since the Magnum is fed by the main panel
Jason,
My guess is that this will work just fine.
My comment is that according to my conversations with Enphase, they would
consider this an off-grid application for which they do not warranty their
product.
If this is the case, it is something your customer should understand
upfront.
Mark
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Mark
Frye
Sent: Tuesday, May 03, 2011 9:32 AM
To: 'RE-wrenches'
Subject: Re: [RE-wrenches] AC Coupling Xantrex XW Inverters
toEnphaseMicroinverters
Jason,
My guess is that this will work just fine.
My comment is that according
03, 2011 9:32 AM
*To:* 'RE-wrenches'
*Subject:* Re: [RE-wrenches] AC Coupling Xantrex XW Inverters
toEnphaseMicroinverters
Jason,
My guess is that this will work just fine.
My comment is that according to my conversations with Enphase, they
would consider this an off-grid application
Willett
Sent: Tuesday, May 03, 2011 10:40 AM
To: RE-wrenches
Subject: Re: [RE-wrenches] AC Coupling Xantrex XWInverters
toEnphaseMicroinverters
Jason, etal
Another Schneider/Xantrex option to consider.
Xantrex will be adding the MPPT 80 to their product line (orderable this
month). This new charge
Thanks Mark for educating me about FSC.
Reading SMA docs, FSC allows the Sunny Boy's AC output to be varied from
maximum to zero when the
Sunny Island varies its AC output frequency between 60Hz and 61Hz.
Based on your response - do you - or any other Wrenches - have any
experience AC
: Re: [RE-wrenches] AC Coupling Fronius IG Plus 10.0 inverter
Message-ID: 0FAC7002A96948B598E5EF79FF3D77E6@marksdell
Content-Type: text/plain; charset=us-ascii
Gary,
I have been looking at some AC coupled stuff lately. The FSC is
propriatary to SMA, Sunny Island to Sunny Boy. Pretty much
-8024
www.berkeleysolar.com
-Original Message-
From: re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Brian Faley
Sent: Wednesday, April 13, 2011 10:21 AM
To: re-wrenches@lists.re-wrenches.org
Subject: Re: [RE-wrenches] AC Coupling
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Mark Frye
Sent: Wednesday, April 13, 2011 10:36 AM
To: 'RE-wrenches'
Subject: Re: [RE-wrenches] AC Coupling Fronius IG Plus 10.0 inverter
Thanks Brian,
My understanding is that the SI/SB combination is the only grouping of
equipment
AFRA is a setting that is used when the SI is in an off-grid situation (can be
grid tied, just that the grid is not available). If there is a generator that
is providing power at a higher frequency, when the Sunny Island disconnects
from the gen, it will lower the frequency (below 60Hz), to
4B5, Canada
*** Please consider the environment before printing this e-mail
From:
Mark Frye ma...@berkeleysolar.com
To:
g...@icarussolarservices.com, 'RE-wrenches'
re-wrenches@lists.re-wrenches.org
Date:
04/12/2011 09:37 PM
Subject:
Re: [RE-wrenches] AC Coupling Fronius IG Plus 10.0
Gary,
I have been looking at some AC coupled stuff lately. The FSC is
propriatary to SMA, Sunny Island to Sunny Boy. Pretty much anything else
you need something to sense the voltage of the battery bank so you can open
a contactor on the AC line to the Fronius when the battery voltage gets too
Was Return Amps
Thanks Roy
I usually leap then look,
The customer has it already, I ran it yesterday, on AC couple into the
standalone system, I learned a lot. But it ran, and I am working out some of
the surprises I had. I am building up two inverter boards with the systems to
control
Jay mentions a topic that I've had a question about. Has anybody
AC-coupled an induction generator (wind or hydro) with a
conventional battery based inverter?
Yes I have.
On the surface it seems that it would work fine as long as there
were appropriate means included in the design to avoid
it with grid tied and standalone.
I have not tried other battery based inverters.
DT
--- On Mon, 3/23/09, Tump t...@hughes.net wrote:
From: Tump t...@hughes.net
Subject: Re: [RE-wrenches] AC coupling-mix and match
To: 'RE-wrenches' re-wrenches@lists.re-wrenches.org
Date: Monday, March 23
Arlington WA 98223 USA
www.outbackpower.com http://www.outbackpower.com/
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Tump
Sent: Monday, November 10, 2008 2:16 AM
To: 'RE-wrenches'
Subject: Re: [RE-wrenches] AC coupling
Chris,
What ever
you have given us flex ware,flex net, MX 80s other BOS
components,some of which still need to be tweeked.
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Christopher
Freitas
Sent: Sunday, November 09, 2008 1:31 AM
To: RE-wrenches
Subject: Re: [RE-wrenches
] On Behalf Of Christopher
Freitas
Sent: Sunday, November 09, 2008 1:31 AM
To: RE-wrenches
Subject: Re: [RE-wrenches] AC coupling
Thanks for the nice comment.
AC coupling with the OutBack off-grid inverters and a typical batteryless
grid-tie inverter doesn't require any additional transfer
Kirk -
Yes it does require the additional relay as a minimum for disconnecting
the AC coupled battery-less grid-tie inverter. I did not think of that
as a protective relay (which is a term utility engineers use for a
protective device intended to prevent islanding of a generator usually -
AC coupling of off grid Outback inverters seems
to be a very good solution for having a generator
backup system while feeding the grid. The
generator won't have a problem synchronizing with
the off grid FX, and the grid tie inverter will
take care of the UL 1741 requirements. Of
course,
Dave Katz sent a drawing which breaks the AC connection between grid-tie
inverter and battery based inverters when the battery voltage is high.I've seen
similar sketches from others.
Thanks as always, Dave...but it seems that in this arrangement the amperage to
the battery is either 100% on
I should have also mentioned that the dump or diversion control can
be done via an AC load with a relatively inexpensive AC solid-state
relay and AC loads such as AC baseboard or AC electric water heater
elements - which are much easier and less expensive than doing it with
the lower voltage /
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