Wireless Transmission of Power

[negitron]

You still think it is possible?

Of course it is. It is, as you say, highly impractical at the moment but the impediments are almost entirely financial. First of all, we're not going to build a gigawatt system in one go; it'll be built up in bits and pieces just as our modern power grid was. Cost-to-orbit will eventually decrease as commercial spaceflight becomes viable and technology on the horizon such as the space elevator emerges. None of the techological issues you mention are insurmountable; for example, we don't need a single giant antenna in orbit because synthesized-aperture arrays work in both directions. And, of course, we can spread out our beam over a much larger area, if need be. We start small and build on it just as with any large-scale infrastructure.

 

[Pumblechook]

Nah.

It will remain remarkable difficult for many decades if ever viable. The private sector won't get involved unless promised loads of public money which will never be forthcoming.

Space elevator? Another fantasy.

 

[Martinmyst]

Hello Pumblechook,


Thank you for answering my query. however as I have declared the project scope, it 's a bit too late for not wasting my time with it.

I do not believe I claimed energy won't dissipate on other surrounding wiring/objects, however Soljacic groups' theoretical work and experimental data suggests strongly coupled systems have few leaks to surrounding objects.

Intel seems to sunk in some monies into the project, coupled with current interest in intelligent grid and other environmental technologies... this will be staying for sometime to come in my opinion. However it might sound counter intuitive (as wireless transmission is transmission with LOSS, no matter how you slice it), it will benefit from current impetus for environmental technologies.

Their preliminary empirical findings confirm what you are saying... near exponential decay on efficiency literally touching zero around 2m distance (Kurs, 2007).


Did you check the second one? (Konstantin Meyl).

Here are a few videos:
http://www.meyl.eu/go/index.php?dir=45_Videos-on-demand&page=1&sublevel=0


I am unable to find any serious treatment of his work, he seems to be relatively unknown on north american scientific circles but of some renown in europe.

References:
A. Kurs et al. Science Vol 317 (2007) 83-86


Cheers.

It is nonsense. Don't waste your time with it.

Absolutely nothing new in resonant coupled coils. It is 1920s technology.

It is just near field which was what Hertz used rather than the far field which is the normal mode for radio transmission over much greater distances.

I gather they have acheived a 45% coupling over two metres with whopping 60cm coils. The size of the aerials tend to a significant proportion of the gap you are trying to bridge. They use more wire in the coils than if they just ran a simple power wire from A to B. The overall efficiency will always be poor. You have to convert AC to DC then to RF then back to DC.. Overall you get less than 20% efficiency.

You won't get much more than 2 metres. The efficiency will be pretty poor further apart and there is a limit to how big you can make resonant coils at a given frequency.

The bit about energy won't be be dissipated in other surrounding wiring/objects is particularly nonsense.

I thought it was an April Fool joke at first sight.

Don't be surprised if it is all quietly forgotten.

 

[Martinmyst]

Thanks for the response Agrocadabra,


I did a lot of digging regarding Nicola Tesla's work and conclusion I have reached on it is not very positive.

Most of his later life inventions/claims have not been repeated for the past century (not due to lack of trying), his patents are nearly unreadable and I have written a few patents myself, makes me wonder how did USPTO granted him in the first place.

Also some of his earlier findings regarding Earth's resonant fields turned out to be stemming from faulty assumptions. His wireless transfer theory (which really was not that wireless, he tried to insert massive rod into Earth to use what we now know as Schumann resonance) for example was based on some faulty assumptions.

Second Wireless Technology that I have asked about was pretty much based on Tesla's original designs. Dr. Konstantin Meyl has been making and selling these units (some 200 at that) for mostly academic audience, but I could not find a single published/unpublished paper discussing them at any level. Curious?

Here is a link for some of his videos:
http://www.meyl.eu/go/index.php?dir=45_Videos-on-demand&page=1&sublevel=0


Cheers.

OP I suggest you look into tesla's work on this.

 

[negitron]

Utterly impractical.

You were saying?