ROBERT via EV wrote:
An EVSE requires an AC cable and data cable. An intelligent outlet
would still require the same two cables. In addition, a specialty
intelligent outlet would cost $100 - $200 (guesstimate).
Not really. An intelligent outlet could do the same, and use RF, or
carrier current signalling to communicate with the EV.
For example, the GM EV1 Magnechargers used RF signals for
authentication. Remember, they had *no* wires between the vehicle and EVSE.
The common X10 system is used to remotely control all sorts of AC loads.
Special outlets have a circuit that can send and receive data over the
existing AC power line wiring, and can switch the AC on or off. These
outlets are mass-produced and sell for only $20 or so each.
However, the high cost is the installation cost and maintenance cost.
People forget that large areas of the nation have already had a charging
infrastructure for a very long time. It's been there to plug in ICE
block heaters, Christmas lights, run electric lawnmowers, etc.
Outdoor AC outlets have been required by the NEC (National Electric Code
for decades. In the states where I've lived (Michigan, New York, and
Minnesota, just about every home, apartment, and business has these
standard 120vac 15a convenience outlets already installed and freely
available for use.
High installation and maintenance cost are a problem with developing
an EV charging infrastructure. The answer is to charge at home with a
NEMA outlet or install induction charging stations.
That's true, if they insist on something new, proprietary, and
incompatible with existing systems. Unfortunately, these become the
*requirements* when someone wants to create a new monopoly to get rich.
However, for induction charging to work efficiently, you need higher
frequency chargers. Remember the EV1 induction charging paddle. The
system operated at 400 HZ.
The EV1 Magnecharger worked at a much high frequency (around 50 KHz).
The higher frequency actually *hurt* efficiency, but was necessary to
make the paddle small and light.
We've had 60 Hz induction charging setups for 50%+ years. For example,
Inductran has made them for charging in-plant EVs. Half of a
conventional 60 Hz transformer is in the floor, and the other half in
the vehicle. Drive over it, and turn it on. The two halves of the
transformer magnetically link, to charge safely and efficiently.
We don't really need expensive high-tech solutions for charging. It's
fundamentally no different than plugging in any other appliance, and
people have been doing that for 100 years.
--
Buy thneeds! It's what everyone needs! Get em' now 'fore they're gone!
Which they'll be, before long! -- "The Lorax" by Dr. Seuss
--
(The reasonable man adapts himself to the world. The unreasonable man
persists in trying to adapt the world to himself. Therefore all
"The Lorax" by Dr. Seuss
--
Lee Hart, 814 8th Ave N, Sartell MN 56377, www.sunrise-ev.com
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