[RE-wrenches] PV direct EV charging
Ray
ray at solarray.com
Tue Apr 13 16:43:17 EDT 2021
We've done some off grid EV charging, and one thing that makes life much
easier, is to go to the lower power chargers. So far, we've just done
PV to battery inverter to AC charger to car. less efficient, but less
trouble. We've also setup dedicated charging outlets/ circuits on
relays to prioritize the house battery.
Ray Walters
Remote Solar
303 505-8760
On 4/13/21 4:29 PM, larry at starlightsolar.com wrote:
> Mac,
>
> You can charge with DC directly from a PV solar array without an
> inverter or regulator. The current is self limiting by the amount of
> PV solar power you are making at any moment.
>
> The magic is knowing know how to trigger the charge port
> communications so your EV controller knows that there is a safe
> connection to a DC power source. Perhaps the will get you started:
> https://www.evcreate.nl/chademo-fast-charging-in-diy/
> <https://www.evcreate.nl/chademo-fast-charging-in-diy/>
>
> Be safe when working with 500Vdc.
>
> Larry Crutcher
> Starlight Solar Power Systems
>
>
>
>
> On Apr 12, 2021, at 5:05 PM, Matt Sherald <matt at getpimby.com
> <mailto:matt at getpimby.com>> wrote:
>
> Mac,
>
> Our car gobbles 11,500W when it's plugged in to the grid. Even if we
> reduced the charge rate it would still be a heck of a draw - the
> chargers in the EVs are greedy. I'll be curious to hear if anyone has
> a solution, but my bet is that you need to give the EV a deep well to
> pull from (probably deeper than a battery bank or PV array can
> directly and consistently satisfy).
>
> -Matt
>
> On Mon, Apr 12, 2021 at 7:55 PM Mac Lewis <maclewis1 at gmail.com
> <mailto:maclewis1 at gmail.com>> wrote:
>
> Sorry, I should have clarified, I am interested in EV charging
> with no grid available. I think that Solaredge requires a grid
>
> On Mon, Apr 12, 2021 at 5:51 PM Dana Orzel <dana at solarwork.com
> <mailto:dana at solarwork.com>> wrote:
>
> SolarEdge
>
> Dana Orzel Great Solar Works, Inc.
>
> *C - 208.721.7003 dana at solarwork.com <mailto:dana at solarwork.com>*
>
> Idaho Contractor - # 028765 Idaho PV # 028374
>
> NABCEP # 051112-136 www.greatsolarworks.com
> <http://www.greatsolarworks.com/>
>
> _"Responsible Technologies for Responsible People since 1988" ___
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>
> *From:* RE-wrenches <re-wrenches-bounces at lists.re-wrenches.org
> <mailto:re-wrenches-bounces at lists.re-wrenches.org>> *On Behalf
> Of *Mac Lewis
> *Sent:* Monday, April 12, 2021 5:24 PM
> *To:* RE-wrenches <re-wrenches at lists.re-wrenches.org
> <mailto:re-wrenches at lists.re-wrenches.org>>
> *Subject:* [RE-wrenches] PV direct EV charging
>
> Hey wrenches,
>
> Are there any purpose built inverters designed to charge an
> EV, PV direct without batteries?
>
> Thanks in advance
>
>
> --
>
> Mac Lewis**
>
> "Yo solo sé que no sé nada." *-Sócrates***
>
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> --
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>
>
> Mac Lewis
>
> *
>
> "Yo solo sé que no sé nada." -Sócrates
>
> *
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> --
> Matt Sherald
> PIMBY Energy, LLC
> NABCEP Certified Solar PV Installer®
> 304-704-5943
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> www.getpimby.blogspot.com <http://www.getpimby.blogspot.com/>
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