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LetoAtreidesII
User Rank
Platinum
chicken before the Egg
LetoAtreidesII   10/28/2013 1:59:40 PM
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We are putting the Chicken out their the EV but do not have the Electrical infastructure to support EV's the egg.  We refuse to build any new Nuke plants.  Coal production is being crushed by new mandates (44+% of current power generated from this) and every were you turn solar and wind projects which in reality produce little power <4% from all non hydro sources are being blocked by eviromental and citizen groups.  saying yes we want them but not here.  Not in my town.

So how are we going to power the electric hungry devices, were are all the new tranmission right of ways required to souce the extra power going.  It can take a decade to get a new High power lines approved and installed so how is this power going to be availible even if we build all these great cars.

I can tell you from past experiance from CA's roving black outs a decade ago.  Hundreds of large deisel generators wer installed to supply local midwest power so power could be rerouted and sold to California.  This problem has not been solved it has gotten worse and the west coast is one good drough away from blackouts up and down the west coast.  (they depend heavily on hydro power and are drought prone)

 

J. Williams
User Rank
Platinum
Re: NO! NO! NO! and NO! - Is That Clear
J. Williams   10/28/2013 12:25:37 PM
NO RATINGS
Where was the 20% lost?  Was it lost just in the inductive interface between the paddle and the vehicle or was it the loss through the entire charging system to include the inverter-charger electronics that powers the paddle, and the magnetic losses at the paddle interface, and the vehicle battery charging electronics that rectifies the induced currents then conditions the power the charge the batteries?

You might not be very impressed with the power lost by your local utility from it's energy source (hydro, NG, coal, neutrons, wind, etc.) to your residence.

The EV1 used a standard inductive interface that in effect is a two-part HF transformer.  These proposed systems I'm sure, use a method that employs highly resonant transmit and receive coils.  The efficiency can go up significantly, but will never be as efficient as a well-maintained, clean, tight electrical connection.

Check out these folks:  http://www.witricity.com 

Their system uses resonant systems with matching networks to optimize the power transfer.

Ann R. Thryft
User Rank
Blogger
Re: good alternative
Ann R. Thryft   10/28/2013 12:07:31 PM
NO RATINGS
Believe it or not, I'm only now starting to see a fair amount of electric cars in my area of California, but they're still new here: hybrids are the dominant species of alternative energy vehicles.

benmlee
User Rank
Gold
NO! NO! NO! and NO! - Is That Clear
benmlee   10/28/2013 11:57:54 AM
Let's get this right, I love EV, and is the future. But this system is not just NO!, is HELL NO. I worked at the same company that did the environmental test of the GM's EV1 charge paddle. Even with that close proximity, you loose 20% of your energy. Here we are talking about energy transfer thru a foot of air! Think of the loss there. Air is not a good medium to transfer electrical energy.

The big part of the purpose of going to EV is to increase efficiency. Here you just lost at least 20% charging the car. Ever few months, another start-up thinks up of this harebrained idea then disappears. They probably realize is not practical. Let's not even entertain this idea. Forget it. Get out of the car and plug in the cable. While you sit at Starbuck for the next two hours, ten seconds of your time is not that big of a deal.

William K.
User Rank
Platinum
Re: I wonder....
William K.   10/28/2013 11:54:26 AM
NO RATINGS
Listner has posted the exact same question that I have been asking about inductive charging for many years. Of course it is convenient, no question about that. But just how efficient is it, watts out over watts in? The one statement that I did find about efficiency, about a year ago, was so obscure that I had to go through it a bunch of times to figure it out, and even then it was not really very clear. I think that it implied that of the power input from the AC mains to the output terminals volts times amps was about 39%, which is rather pitifil compared to almost all direct connection charging systems.

What has never been adequately explained is how the vehicle end of the connection link will survive in a typical Michigan winter, when it is constantly sprayed with a saturated salt solution, and encased in dried salt crystals. That mix is damaging enough to heavt steel suspensions and frames, and has been seen to totally destroy the copper portion of OEM vehical wiring on some occasions. So an explanation of how that part of the hardware can be made to last could be a benefit to the automakers as well as the rest of us.

One additional concern is about the weight and cost of such a system, which have not been addressed in any rational manner, nor with much in the line of numbers. Numbers, after all, are what often separate fact from opinion.

Reliabilityguru
User Rank
Platinum
Re: good alternative
Reliabilityguru   10/28/2013 11:10:35 AM
NO RATINGS
Not at all the technology is proven.

listener
User Rank
Silver
Re: I wonder....
listener   10/28/2013 11:04:29 AM
NO RATINGS
Didn't mean to direct questions as a reply to you, just unfamiliar with posting to this board.

LetoAtreidesII
User Rank
Platinum
Re: good alternative
LetoAtreidesII   10/28/2013 11:04:00 AM
NO RATINGS
"Wardenclyffe Tower on a micro scale"

so what you are saying it it will be another money pit that does not work just on a smaller scale then Tesla's

listener
User Rank
Silver
Re: I wonder....
listener   10/28/2013 11:02:54 AM
NO RATINGS
Excellent concept overall.

Two questions thought.

What is the overall charging system effeciency, measured from coming in on power line to stored in battery (leavingout transmission, motors, etc).

Will a magnetic field interact with implanted medical device, pacemaker for example?

 

Jim_E
User Rank
Platinum
I wonder....
Jim_E   10/28/2013 10:27:48 AM
NO RATINGS
If I had a Qi equipped smartphone, I wonder if I could charge it by standing on the curb next to this beast?  ;)

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