If you can find an off-grid inverter with 300 VDC input then I sure want to
know about it!  Really... that is the holy grail...
All off-grid inverets I see are designed for 48 volts for compatibility
with batteries.
You only see 300-500 VDC input on Grid inverters since there are no
batteries.

Bob

On Wed, Jul 29, 2020 at 12:50 AM Luke Scharf <lukesch...@clusterbee.net>
wrote:

> Thanks!  I've managed to find https://plugoutpower.com/ and read through
> their site.  I'll contact them if I have something they might find
> interesting.
>
> I just purchased a GM 2-mode hybrid pickup truck, and have been doing
> pen-and-paper design exercises to see if adding an electric power takeoff
> inverter is possible.
>
> It looks doable.  Figuring out how to tap into the HVDC system under the
> hood doesn't look that hard, and finding electrically-compatible parts
> (such as an off-grid MPPT inverter which can take a 300VDC input) also
> looks fairly doable.
>
> But, plugging things together is the easy part.  There are a lot of
> engineering constraints and safety/durability issues which would need to be
> thought through carefully.  This is a pen-and-paper design exercise for me
> for now.
>
> -Luke
>
>
> On Sun, Jul 26, 2020, 11:34 AM Robert Bruninga <bruni...@usna.edu> wrote:
>
>> There is a company (called Plugout I think) working on a 3kw and 5kw
>> version but best I can tell, they are taking the simple way out.  They are
>> just taking a normal inverter (designed for HVDC input  for Europe (220
>> VAC) and then selling you an autotransformer to convert to split phase 240
>> VAC.
>>
>> But the weight of a 3 to 5 kW autotransfomer has got to be hundreds of
>> lbs.  And price goes up to the thousands.
>>
>> To me it should be a designers dream and huge market, EXCEPT that it will
>> require professional hacking to each EV or Hybrid model depending on
>> voltage and how hard it is to get access to the HV circuits.  The prius
>> battery was 220 VDC and pretty easy to get to.  No one seems to know how to
>> get into a Volt's battery without dropping the entire battery from below.
>>
>> Bob, WB4APR
>> Author ARRL: http://aprs.org/Energy-Choices.html
>>
>>
>>
>> On Sat, Jul 25, 2020 at 11:40 PM Luke Scharf via EV <ev@lists.evdl.org>
>> wrote:
>>
>>> Has anyone done anything like Richard Factor's PriUPS, except with the GM
>>> 2-Mode hybrid?
>>>
>>> Thanks,
>>> -Luke
>>>
>>> On Sat, Jul 25, 2020 at 3:25 PM Lee Hart via EV <ev@lists.evdl.org>
>>> wrote:
>>>
>>> > redscooter via EV wrote:
>>> > > I want to do a prius 12vdc battery to 120 vac invertor. which of the
>>> > prius
>>> > > can do this meaning, turn the car on,  turn off all the extra loads,
>>> turn
>>> > > on invertor. Which years or gen /s  will stay on and keep charging
>>> the 12
>>> > > vdc battery??  some talked about using the manal key to lock the
>>> doors.
>>> >
>>> > I have a 2001 Prius, and my son has a 2014 Prius. We really don't have
>>> > to do anything special to power an inverter. Just leave the key "on"
>>> > with the car in "ready", and the ICE will start and stop as necessary
>>> to
>>> > keep the 12v battery charged.
>>> >
>>> > Small inverters (under 100w) can be plugged into the 12v accessory
>>> > outlet. Larger ones should be connected directly to the battery with
>>> > heavy wires, as they can draw a significant amount of current.
>>> >
>>> > Bob Bruninga has done a significant amount of work on Prius with
>>> > inverters. Check out his website for details and ideas
>>> > <http://www.aprs.org/aprs-swer.html>. He's on this list, so perhaps
>>> > he'll chime in with more information. :-)
>>> >
>>> > Lee Hart
>>> >
>>> > --
>>> > If happiness is on your mind, here's a daily list to find:
>>> >   - something to do
>>> >   - something to look forward to
>>> >   - someone to love
>>> >   - someone to take good care of
>>> >   - and misbehave, just a little
>>> >   --
>>> > Lee Hart, 814 8th Ave N, Sartell MN 56377, www.sunrise-ev.com
>>> > _______________________________________________
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>>> > http://groups.yahoo.com/group/NEDRA)
>>> >
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