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Wrenches,<br>
I'm stumped as to the best approach for a customer who wants a
non-grid-tied, batteryless PV-powered EV charging station. See
below, from one of our salespeople. Any ideas?<br>
Thank you, <br>
Allan<br>
<br>
-------- Original Message --------<br>
<br>
Allan:<br>
Monday I sit down with an interesting fellow who sounds like a
potential good customer (has money and right enviro goals) - in SF.<br>
He brought up the idea of discussing a car charging station for
future electric car that:<br>
<ol>
<li>stands alone, no grid connection</li>
<li>no batteries - he pictures his car is home most days - he
parks it and when the sun shines it gets charged directly</li>
</ol>
Why that approach?<br>
<ol>
<li>He is thinking this must be the most efficient conversion,
i.e. directly without batteries or line loss of electrons to and
from utility</li>
<li>Wants the car to function independent of dirty fuel/dirty
electrons</li>
<li>He assumes less equipment; maybe less cost but the cost is not
important other than as example for others</li>
</ol>
Issues I see:<br>
<ol>
<li>All inverters that can produce the high voltage needed need
grid power or if off grid need batteries - know of anything
stand alone available?</li>
<li>Power or voltage fluctuation as panels see more or less sun;
ie hours of day or clouds, etc - what will be the output from
inverter?</li>
<li>Without tieing into grid investment in PVs (both his financial
and the embodied for manuf.) gets wasted when car fully charged
or car not home and sunny.</li>
<li>Is total amps output in peak sun even going to meet the
charging requirements? ie takes 10 days to recharge instead of 4
hours - or overly massive system to match rate of charge?</li>
</ol>
Your thoughts?<br>
Karlis<br>
<br>
<br>
<font face="Times New Roman, Times, serif"><b>Allan Sindelar</b></font><br>
<small><a href="mailto:Allan@positiveenergysolar.com"><font
color="#000099" face="Times New Roman, Times, serif"><u>Allan@positiveenergysolar.com</u></font></a></small><font
face="Times New Roman, Times, serif"><br>
<span style="font-size: 10pt;">NABCEP Certified Photovoltaic
Installer<br>
NABCEP Certified Technical Sales Professional<br>
New Mexico EE98J Journeyman Electrician<br>
<b>Positive Energy, Inc.</b><br>
3201 Calle Marie<br>
Santa Fe, New Mexico 87507<br>
<b>505 424-1112</b><br>
<a href="http://www.positiveenergysolar.com/" target="_blank"><u>www.positiveenergysolar.com</u></a></span></font>
<span style="font-size: 10pt;"></span>
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