I’m currently building a similar sized system (a bit larger), so I know what the costs are for such scale. Seems like 6-9 SolArks or XWpros for dedicated closed loop charging only wouldn’t be unreasonable?
If an equally sized battery charger exists it would be a monstrosity! > On Dec 2, 2021, at 7:53 AM, Jay <jay.pe...@gmail.com> wrote: > > Hi all > > Sorry I guess I didn’t explain the clients wants well enough > > 1. 90-100kwh+ 48 vdc lithium battery > 2. 208 3 phase AC generator powering 48v nominal battery chargers. > 208-3phase as that is the house/EE design voltage. > 3. AC generator because it’s back up if the inverters fail, so no DC > generator. > 4. Client doesn’t want any drop outs or have to reset clocks etc during > generator/inverter- charging/switchover. > 5. Inverter size is not decided yet, probably 40-80kw. > 6. Generator size isn’t specified yet, but given the loads 60-125kw > probably. > Size would be based on battery charging or max ac load which ever is larger. > > That leads me external chargers. > > I’m looking for large programmable battery chargers for lithium batteries > powered from a 208-3phase ac generator in the 60-125 kw size range. > > Thanks > > Jay > > > > > > >> On Dec 2, 2021, at 6:56 AM, MDElectricSolar <mdelectricso...@gmail.com> >> wrote: >> >> Maybe a DC output generator, the Wildcat Maverick charges a 48v battery >> bank directly and has it’s own controls, independent from the inverter. >> >> https://wildcatpowergen.com/pages/maverick >> <https://wildcatpowergen.com/pages/maverick> >> >> Michael D Nelson >> MD Electric & Solar, Inc. >> 707-684-0064 mobile >> 707-884-1862 office >> www.mdelectricsolar.com >> www.facebook.com/mdelectricandsolar >> >> >>> On Dec 2, 2021, at 6:27 AM, Mac Lewis <maclew...@gmail.com> wrote: >>> >>> >>> Hi Jay, >>> >>> Is the plan to feed DC current (from generator and grid) into the batteries >>> and keep the inverters as power source for loads? >>> >>> On Thu, Dec 2, 2021 at 6:30 AM Darryl Thayer <darylsol...@gmail.com >>> <mailto:darylsol...@gmail.com>> wrote: >>> Jay I am confused as usual, what are the loads? AC or DC? How are you >>> charging the battery from the generator or how is the battery powering the >>> loads? What is the desired current or the size of the generator? sorry >>> if this I dumb question >>> >>> On Wed, Dec 1, 2021 at 2:23 PM Jay <jay.pe...@gmail.com >>> <mailto:jay.pe...@gmail.com>> wrote: >>> I got a call from a colleague that is designing a very large roughly 90-100 >>> kWh lithium battery at 48v. >>> >>> He’s looking for large AC chargers to charge this bank. The reason is total >>> elimination of switch over delay from inverter to generator and back. >>> >>> One technique is to use inverters for this, but pretty pricey. >>> >>> Any recommendations as to equipment, brands etc? >>> >>> It would be a 208 3 phase AC side powered by a generator. >>> >>> Thx >>> Jay >>> >>> Peltz power. >>> _______________________________________________ >>> List sponsored by Redwood Alliance >>> >>> Pay optional member dues here: http://re-wrenches.org >>> <http://re-wrenches.org/> >>> >>> List Address: RE-wrenches@lists.re-wrenches.org >>> <mailto:RE-wrenches@lists.re-wrenches.org> >>> >>> Change listserver email address & settings: >>> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >>> <http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org> >>> >>> There are two list archives for searching. 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When one doesn't work, try the >>> other: >>> https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/ >>> <https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/> >>> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org >>> <http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org> >>> >>> List rules & etiquette: >>> http://www.re-wrenches.org/etiquette.htm >>> <http://www.re-wrenches.org/etiquette.htm> >>> >>> Check out or update participant bios: >>> http://www.members.re-wrenches.org <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 >>> >> _______________________________________________ >> 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 > Michael Morningstar Morningstar Electric PO Box 1494 Mount Shasta, California 96067 530-921-0560 CSLB 949635
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