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Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
I agree that it might be better for Puerto Rico to not spend too much trying
to restore their poorly maintained, fragile grid, and go straight to
investing in distributed generation.
For decades PREPA (the state-owned PR electric utility) resisted using
anything but fuel oil and a little
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Robert Bruninga via EV wrote:
I want to develop a way to charge an EV from a Solar array when the
grid is down cheaply.
My thiking is that typical modified sine 12v/120VAC inverters do their
inversion first from 12VDC to high voltage DC first, and then they chop
it to make it modified sine.
A GT inverter is not a voltage source able to supply power to a load. It is
a CURRENT source that pushes an MPPT derived amount of power in phase with
an existing waveform that is connected to a near ZERO IMPEDANCE load (the
grid). Withtout the grid, even if you fool it with a waveform, the
You could get a 120vac grid tie inverter. Those typically have a mppt front end
that boosts or bucks to a nominal 180vdc before inverting to 120vac.
Connect the two 180v dc buses and you're good to go.
Having a bit of storage capacity on that dc bus would be ideal for starting
loads
Sent
Bob is right in that it is often in the inverter that the voltage gets
boosted first, then chopped into a sine wave.
In fact, I have an inverter laying around that I want to do this, not
for solar charging (I will explain why in a minute)
but for running it off my Nissan Leaf pack, which consists
The device you are describing is called a "micro-inverter". Typically
they are designed with "anti-islanding" proteciton, so they require a
system (the grid) already making 240v sine waves before they add 240 VAC
back to the grid. You can purchase microinverters without this
protection, but it
damon henry via EV wrote:
I don't disagree with your assessment of less complexity, more reliability, but
the less expensive part is tough to accomplish. This is primarily because of
the energy storage systems. An ICE vehicle just needs a stamped piece of metal
to store it's energy. An EV
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Please discuss EV drag racing at NEDRA
(http://groups.yahoo.com/group/NEDRA<http://groups.yahoo.com/group/NEDRA?soc_src=mail_trk=ma>)
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I want to develop a way to charge an EV from a Solar array when the grid
is down cheaply.
My thiking is that typical modified sine 12v/120VAC inverters do their
inversion first from 12VDC to high voltage DC first, and then they chop it
to make it modified sine.
If that is the case, it should be
On Thu, Oct 5, 2017 at 10:20 PM, Lawrence Rhodes wrote:
> I talked with a junkyard employee who said they got numerous Leafs with no
> battery packs. All cars had around 3k miles. 11 - 15 years. SF junkyard.
Battery packs stolen, maybe?
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I remember when Toyota was ramping up their Prius production and introducing
the new 2004 model
and GM engineers had looked at the car and concluded that there was no way
Toyota was making money
and was probably going to stop soon as they should be making a loss on every
car produced.
Soon
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