Calling Nikola Tesla! Calling Nikola Tesla! Come back! All is forgiven!
I bet *he'd* have something to say on this subject! MW
On 21 Jul 2014, at 20:24, Lee Hart via EV wrote:
From: Peri Hartman
Is it possible to use multiple coils to focus the beam?
Magnetic fields are devilishly
Of Martin WINLOW via
EV
Sent: Wednesday, 23 July 2014 8:19 p.m.
To: Lee Hart; Electric Vehicle Discussion List
Subject: Re: [EVDL] EVLN: BMWDaimler developing 3-Hour Wireless Inductive
EVSE for i3 EV
Calling Nikola Tesla! Calling Nikola Tesla! Come back! All is forgiven!
I bet *he'd* have something
:19 p.m.
To: Lee Hart; Electric Vehicle Discussion List
Subject: Re: [EVDL] EVLN: BMWDaimler developing 3-Hour Wireless Inductive
EVSE for i3 EV
Calling Nikola Tesla! Calling Nikola Tesla! Come back! All is forgiven!
I bet *he'd* have something to say on this subject! MW
On 21 Jul 2014, at 20:24
-
From: EV [mailto:ev-boun...@lists.evdl.org] On Behalf Of Peter C.
Thompson via EV
Sent: Wednesday, July 23, 2014 7:40 AM
To: ev@lists.evdl.org
Subject: Re: [EVDL] EVLN: BMWDaimler developing 3-Hour Wireless
Inductive EVSE for i3 EV
Took some digging, but using the phrase resonant magnetic induction
From: George Tyler
I have done a lot of transformer and inductor design over the years, always
said you can't focus or direct a magnetic field, apart from ordinary
magnetic materials of course. On day I found something that someone had put
together on the web: He pointed out that if you have a
I am betting there are flux guides involved however it is done. Some iron
in the circuit does wonders for concentrating fields, though high
frequencies...is permeability of material a function of frequency? I
always did DC magnetics.
The cores in transformers are no more or less than flux
Dear David, I was a teacher in a juvenile detention center back in 2000 to
2002, and they taught me a lot. the gang members teach each other, so after
the first one or two who find the wire un-sell-able, they won't steal it
because there is no payoff for the risk.. A dumb thief does not have a
...@winlow.co.uk; Electric Vehicle Discussion List
ev@lists.evdl.org
Sent: 20-Jul-14 11:37:04 AM
Subject: Re: [EVDL] EVLN: BMWDaimler developing 3-Hour Wireless Inductive
EVSE for i3 EV
From: Martin WINLOW
Not wanting to shoot your work down but I am reminded of (I think it was)
Lee's idea
It's not just convenience. There is the issue of theft/vandalism of/to
charging cords and the (small) danger to passers by posed by them ie the trip
hazard. They'll also wear out in time. The inductive system removes all these
problems. MW
On 21 Jul 2014, at 05:08, Peri Hartman via EV
Good points, but at what cost? Are we going to replace a
$50 wire with a $2,000 wireless? Set of modules? Why not replace the 20 ft
(6meter) cord set with one with the J1772 Level 2 or the European
connector, on both ends, You just carry it with you. Usually the wires are
cut, and stolen, when
Cable theft is a primary reason for wireless power transfer. Carrying a
cable with you just means you make it easier for someone to steal your
copper. Heck, even in my relatively safe suburb I have to worry about my
power cords disappearing!
As for efficiency, I've seen plug-to-battery
From: Peri Hartman via EV ev@lists.evdl.org
Me, too. However, consumers might not care (unfortunately). In other
words, you might pay 15% more to cover losses but compared to what?
Consumers will be happy to just park and have the charge happen
automatically. Unless energy costs are really
From: Martin WINLOW
It's not just convenience. There is the issue of theft/vandalism of/to
charging cords
and the (small) danger to passers by posed by them i.e. the trip hazard.
They'll also
wear out in time. The inductive system removes all these problems.
Maybe. Everything hinges on how
From: Dennis Miles
at what cost? Are we going to replace a $50 wire with a $2,000 wireless?
Yes. :-/ As long as someone else pays for that $2000 wireless setup and the
extra electricity it uses, consumers will fall for it. Of course, it is usually
the consumer that pays, whether he realizes it
Message-
From: EV [mailto:ev-boun...@lists.evdl.org] On Behalf Of Lee Hart via EV
Sent: Monday, July 21, 2014 11:19 AM
To: Dennis Miles; Electric Vehicle Discussion List
Subject: Re: [EVDL] EVLN: BMWDaimler developing 3-Hour Wireless
Inductive EVSE for i3 EV
From: Dennis Miles
at what cost? Are we
From: Peri Hartman
Is it possible to use multiple coils to focus the beam?
Magnetic fields are devilishly difficult to direct or focus.
With electricity, we have great conductors (copper, silver, etc.) and great
insulators (air, plastics, etc.) There are *many* orders of magnitude
difference
Thanks for your layman explanations. I follow.
-- Original Message --
From: Lee Hart leeah...@earthlink.net
To: Peri Hartman pe...@kotatko.com; Electric Vehicle Discussion
List ev@lists.evdl.org
Sent: 21-Jul-14 12:24:27 PM
Subject: Re: [EVDL] EVLN: BMWDaimler developing 3-Hour
On Jul 20, 2014, at 9:08 PM, Peri Hartman via EV ev@lists.evdl.org wrote:
Me, too. However, consumers might not care (unfortunately). In other words,
you might pay 15% more to cover losses but compared to what?
I'd echo this sentiment.
Don't let the perfect be the enemy of the good. Many
On Jul 21, 2014, at 12:53 AM, Martin WINLOW via EV ev@lists.evdl.org wrote:
You might be able to even make it automatically adjust the focus to slightly
off-centre alignment, thereby making parking easier and the whole she-bang
more efficient. And maybe focus vertically as well as
Matthew Parkhouse, RN
hobomatt@ aol.com
On 21 Jul 2557 BE, at 16:18, Ben Goren via EV ev@lists.evdl.org wrote:
On Jul 20, 2014, at 9:08 PM, Peri Hartman via EV ev@lists.evdl.org wrote:
Me, too. However, consumers might not care (unfortunately). In other
words, you might pay 15%
On 21 Jul 2014 at 4:20, Dennis Miles via EV wrote:
Or use copper plated aluminum wire as it is not worth nearly so much
for metal scrap... each strand of the aluminum is coated with copper,
they are nearly useless for recycling and that means they won't be
stolen, but they work for electrical
Peter,
Looks like you last post didn't work...
I'd be interested to know the answer to Lee's question, though in practical
terms I can see the appeal of the road-based solution. As far as that goes, is
there talk of being able to lower the car coil or is it assumed it will be
fixed? If
Sorry about that - it also appears my resend as text failed. Some days
it's not worth posting. :)
Here's what I wrote earlier:
Hi Dennis,
This had been discussed at some meetings prior to my joining the group.
The biggest issues with the front mount are safety and EMF emissions. If
you
From: Martin WINLOW
Not wanting to shoot your work down but I am reminded of (I think it was)
Lee's idea of using
an auto engaging charger connection which would be much more efficient, much
cheaper and only
marginally less practical.
It was actually Bob Rice's solution (although the idea
...@winlow.co.uk; Electric Vehicle Discussion List
ev@lists.evdl.org
Sent: 20-Jul-14 11:37:04 AM
Subject: Re: [EVDL] EVLN: BMWDaimler developing 3-Hour Wireless
Inductive EVSE for i3 EV
From: Martin WINLOW
Not wanting to shoot your work down but I am reminded of (I think it
was) Lee's idea of using
and also improve efficiency.
Peri
-- Original Message --
From: Lee Hart via EV ev@lists.evdl.org
To: Martin WINLOW m...@winlow.co.uk; Electric Vehicle Discussion
List ev@lists.evdl.org
Sent: 20-Jul-14 11:37:04 AM
Subject: Re: [EVDL] EVLN: BMWDaimler developing 3-Hour Wireless
Inductive EVSE
My problem with the whole wireless charging dog and pony show is the lost
energy and the seemingly impossible efficiency claims.
For instance, even if the high frequency transformer had NO air gap, there
would still be a limit to its efficiency.
How efficient is a 60hz transformer? Is a higher
: 20-Jul-14 8:55:06 PM
Subject: Re: [EVDL] EVLN: BMWDaimler developing 3-Hour Wireless
Inductive EVSE for i3 EV
My problem with the whole wireless charging dog and pony show is the
lost energy and the seemingly impossible efficiency claims.
For instance, even if the high frequency transformer had
--
From: Al via EV ev@lists.evdl.org
To: Peter C. Thompson pe...@cruzware.com; Electric Vehicle
Discussion List ev@lists.evdl.org
Sent: 20-Jul-14 8:55:06 PM
Subject: Re: [EVDL] EVLN: BMWDaimler developing 3-Hour Wireless Inductive
EVSE for i3 EV
My problem with the whole wireless
worn by occupants.
(My car warms me before we leave in the morning...)
On Thu, 7/17/14, brucedp5 via EV ev@lists.evdl.org wrote:
Subject: [EVDL] EVLN: BMWDaimler developing 3-Hour Wireless Inductive
EVSE for i3 EV
To: ev@lists.evdl.org
Date: Thursday
So, how much EMF from the transmitter 'escapes' the receiver in normal
operation? It is this, I think, anyone who has concerns about the technology is
effectively talking about. Whether any escaped energy can then cause problems
with other devices is another matter. MW
On 19 Jul 2014, at
We have very strict european radiation standards that cover this - you
could be walking your pet sloth next to the charging car and be safe
(both you and the sloth). :) The bigger issue is what happens when you
stick your arm under the car - it is currently saying that power must be
off before
Hi Lee,
Part of the long, long discussion covers this. We have a list of common
metal items (along with size and material) that must be detected. There
are some other standards that EV charging will have to conform to, since
we will need to prevent overheating that can cause human injury.
My question relates to orientation and ground clearance. Now I like about
8.5 inches of completely clear ground clearance, that way it can clear a
8x8x16 cement block, and most debris is smaller than that. The other
question is one of orientation... Why does everyone want to put the unit in
the
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For EV drag
in the morning...)
On Thu, 7/17/14, brucedp5 via EV ev@lists.evdl.org wrote:
Subject: [EVDL] EVLN: BMWDaimler developing 3-Hour Wireless Inductive EVSE
for i3 EV
To: ev@lists.evdl.org
Date: Thursday, July 17, 2014, 4:58 AM
Wireless EV Charging
...)
On Thu, 7/17/14, brucedp5 via EV ev@lists.evdl.org wrote:
Subject: [EVDL] EVLN: BMWDaimler developing 3-Hour Wireless Inductive
EVSE for i3 EV
To: ev@lists.evdl.org
Date: Thursday, July 17, 2014, 4:58 AM
Wireless EV Charging on the Horizon
Wireless EV Charging on the Horizon, But is It Safe?
http://www.digitaltrends.com/cars/cables-needed-bmw-daimler-working-wireless-charging-technology-evs/
No cables needed: BMW and Daimler working on wireless charging technology
for EVs
By Andrew Hard — July 11, 2014
[image
developing 3-Hour Wireless Inductive EVSE
for i3 EV
To: ev@lists.evdl.org
Date: Thursday, July 17, 2014, 4:58 AM
Wireless EV Charging on the Horizon, But is It Safe?
http://www.digitaltrends.com/cars/cables-needed-bmw-daimler-working-wireless-charging-technology-evs/
No cables needed: BMW
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