Hey Chris and All, So my understanding of open versus closed loop and my experience is that closed loop is ideal and will be increasingly required by UL9540 or utilities that require that. However many inverters don’t use SOC from the BMS to determine charge states anyway and they will be relying on voltage and since it’s easy to regulate LFP’s with voltage, open loop works fine for most inverter- LFP pairs as long as you have your settings correct. We have several systems in the field open loop and I have one in my van- All work just fine.
Sent from my iPhone > On Jan 5, 2022, at 8:52 AM, Chris Schaefer <ch...@solarandwindfx.com> wrote: > > > Correct me if I'm wrong but my research seems to lean towards the prefered > method to implement Lithium batteries with an inverter system is via closed > loop communication, over open loop? Currently looking into installing a BI > and Fortress system of similar size side by side here at our Design and > Training center to see how they perform with a lot of data collection > equipment. > > Christopher > >> On Wed, Jan 5, 2022 at 11:37 AM Mac Lewis <maclew...@gmail.com> wrote: >> Hi Kirk, >> >> Yes, Sol-Ark and Blue Ion communicate fine through the Namaka Gateway. You >> do need to make sure that the firmware is up to date on the Sol-Ark because >> there are older versions out there that don't work. Purchase their >> auto-updater dongle if you aren't going to have internet on the site and >> preload the new firmware on the dongle. >> >> I also have quite a few Radians out there working fine with the Blue Ion >> just using voltage and programming the Flexnet per Blue Ion. The SOC on the >> flexnet seems to track really well if the batteries are filling up often. >> >> My only serious gripe with Sol-Ark is generator interaction. It is very >> rigid and glitchy compared to Outback and strange to program. This will get >> better though. I do think its easy to >> >> Good Luck >> >> >> >> >>> On Wed, Jan 5, 2022 at 7:45 AM Kirk Herander <kirkh@vermont.solar> wrote: >>> Hi All, >>> >>> I am considering changing the inverters on several Blue ion HI LFP storage >>> systems I'm installing this Spring from Outback Radians to Sol-Ark. I have >>> no experience w/ Sol-Ark, but it seems more advanced than the Radian. I'm >>> wondering if Sol-Ark and the BI Namaka gateway/monitor can directly >>> interface as Namaka can with some inverter brands. And I'd be interested in >>> hearing of any experiences you may have as to how nicely these different >>> components play together. Thanks. >>> >>> -- >>> Kirk Herander / kirkh@vermont.solar >>> Owner|Principal, VT Solar, LLC >>> Celebrating our 31st Anniversary 1991-2022!! >>> www.vermont.solar >>> dba Vermont Solar Engineering >>> 802.863.1202 >>> _______________________________________________ >>> List sponsored by Redwood Alliance >>> >>> Pay optional member dues here: http://re-wrenches.org >>> >>> List Address: RE-wrenches@lists.re-wrenches.org >>> >>> Change listserver email address & settings: >>> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >>> >>> There are two list archives for searching. When one doesn't work, try the >>> other: >>> https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/ >>> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org >>> >>> List rules & etiquette: >>> http://www.re-wrenches.org/etiquette.htm >>> >>> Check out or update participant bios: >>> http://www.members.re-wrenches.org >>> >> >> >> -- >> >> >> >> Mac Lewis >> >> "Yo solo sé que no sé nada." -Sócrates >> >> _______________________________________________ >> List sponsored by Redwood Alliance >> >> Pay optional member dues here: http://re-wrenches.org >> >> List Address: RE-wrenches@lists.re-wrenches.org >> >> Change listserver email address & settings: >> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >> >> There are two list archives for searching. When one doesn't work, try the >> other: >> https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/ >> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org >> >> List rules & etiquette: >> http://www.re-wrenches.org/etiquette.htm >> >> Check out or update participant bios: >> http://www.members.re-wrenches.org >> > > > -- > Chris Schaefer’s > > Tel/Fax 585-229-2083 or Cell 585-748-1870 > 5115 South Hill Road ~ Canandaigua New York 14424 > www.solarandwindfx.com ~ E-mail: ch...@solarandwindfx.com > > > > Thomas Jefferson, the author of our great Constitution, once said, > "democracy" will cease to exist when you take away from those who are willing > to work and give to those who would not." > > _______________________________________________ > List sponsored by Redwood Alliance > > Pay optional member dues here: http://re-wrenches.org > > List Address: RE-wrenches@lists.re-wrenches.org > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > There are two list archives for searching. When one doesn't work, try the > other: > https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/ > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > http://www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > http://www.members.re-wrenches.org >
_______________________________________________ List sponsored by Redwood Alliance Pay optional member dues here: http://re-wrenches.org List Address: RE-wrenches@lists.re-wrenches.org Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org There are two list archives for searching. When one doesn't work, try the other: https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/ http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: http://www.re-wrenches.org/etiquette.htm Check out or update participant bios: http://www.members.re-wrenches.org
