Wireless Power Transmission


Uploaded by techEIU on 29.03.2011

Transcript:
[no dialogue].
Okay, groups, let's go with wireless power transmission.
This is going to be the best presentation ever!
My name is Kathleen Kash, and here we go.
(Dr. Wafeek Wahby). Let's give them a hand.
(Ms. Kash). Yes, give us a hand.
[audience applause].
(Ms. Kash). Thank you, thank you, okay.
I'm going to start with conventional history because
you have to understand where power came from.
Then, we're going to have Dan go from conventional history or
conventional power to wireless power and then Trish is going to
talk about the current applications of wireless power.
And then we've got Bret ending with the future.
So, conventional power, basically it comes down to
when there's conventional power it comes down
to two different energies.
One is fossil fuels and the other one is renewable energies.
This includes things like from the sun windpower.
So fossil fuels that we are going to talk about is going to
be wood, coal, steam, and electricity.
Wood and coal have been used, wood has been used
from the very beginning with people.
So, things whether they are using it for light, they're
using it to cook food, they're using it to make heat.
Same with the coal, coal is for light sources to make heat.
Steam is when you use liquid and you warm
it up and it makes some vapors.
And so what happened was throughout history, we had
inventors who used these basic fossil fuels and created
technologies that would empower like every day uses.
One of the things with the steam is the steam engine.
Coal is when we have we use them in generators to power
electricity and other sources to us.
Finally is electricity, electricity everything was
started with Ben Franklin when he had the kite and the key
attached to it and the lightning hit it.
That might have been the start of him understanding how to
harness energy, but really it started with Michael Faraday.
And Michael Faraday, he is the first inventor,
let me get to him, he was the first inventor who
actually understood an electric current being
passed through a magnet and a copper wire.
So he understood that the electricity went from the wire
and it flew through the copper and that's how
the light and the heat source coming.
Thomas Edison is right close behind him
with the creation of the light bulb.
He also had the creation of the direct current, which is the
direct current allowed the factories to make power and that
would generate the electricity and
other sources to a close vicinity.
Then George Washington, which now I just realized the name,
anyway, George Washington then did the electric alternating
current, which is just more of an extension
of the direct current and made the power go out
farther than what Thomas Edison could do.
And then, we'll talk a little more about Nikola Tesla, but he
also did the AC, the alternating current and then also had the
vision for wireless technology.
(male speaker). [unclear dialogue].
(Ms. Kash). What?
(male speaker). [unclear dialogue].
(Ms. Kash). No, no, this is the inventor,
George Washington is the inventor, yeah definitely,
Next, one of the things when it comes to using our fossil fuels
is of course we're talking about global warming.
We use more fossil fuels and that is decreasing them,
and it's also causing more of a problem with
the global warming situation.
Some of the things that they're doing to try and make it better
is they are talking about energy policy, which is giving them the
amount that people can use, but that's not being done now.
And then they are also talking about how things need to be
changed using solar and wind power things.
Next is going to be Dan talking about the evolution.
(Mr. Dan Cooper). We're going to talk about
Nikola Tesla, late in the 1800s and
early 1900s, his vision was to use coils, giant coils to
transmit power wirelessly through the air.
It's basically through the troposphere which is the lower
part of the earth's atmosphere to power homes around the world.
Because of this idea, you know, his funding
was pulled by his financial backers because
they didn't know of a way to meter that power use, next.
We've got advantages and disadvantages of both
wired and wireless technology.
Some of the disadvantages are power loss because of the
resistance to the wires themselves and the
amount of raw materials taking up the wires.
The power loss due to resistance is estimated at about 26%.
The raw materials, mainly copper, copper supplies
are dwindling in the world.
Then, you've got the unsightly mess of wires.
You can see that in the classroom as well.
Advantages is so far it's more reliable than wireless.
The technology is known and we are comfortable with it.
The infrastructure is in place in much of the developed world.
Disadvantages of wireless technology, the wireless
disadvantages are the technology is not known to most consumers.
The health risks are unknown, could be cancer-causing.
There needs to be more research done.
We have the ability to meter power easily.
Wire goes into a meter, goes out of the meter,
and we can tell how much power is used.
The current technology only allows transmission
across small distances.
Interference, some siding and stucco screen
wires interfere with wireless.
Advantages, we may be able to allow remote areas
access to wireless power.
There's no cords, no wires, nothing to trip over.
And then there's the potential for higher
efficiencies than wired technology.
The first wireless power that we're going to
talk about is radio frequencies.
Powercast of Pennsylvania, they have a system
capable of extracting power from radio frequencies.
The potential for this technology is to trickle
charge battery operated devices,
cellphones, laptops, that sort of thing.
Disadvantages interference caused by metal surfaces.
The next is induction.
These are where portable devices are placed on charging pads.
Coupling the pad with the electronics in the device.
A company by the name of Splashpower has created a
charging mat for portable recharging devices.
The disadvantage is that only a few of these
devices are available in the world today,
so it's catching on but very slowly.
The potential is to couple the charging technology with a
portable device to introduce it to more people.
Then, we've got adaptive inductive coupling.
This technology is intelligent enough to manage varying loads
on its secondary coil, so it allows the configuration to
change where the conduction is most effective.
A company by the name of Visteon uses this technology, they
created a drawer inside of a car for recharging portable devices.
Then there's microwaves.
This requires a microwave source and an antenna.
The current size of the transmitter and receiver
limit this technology.
Technology, I'm sorry, microwaves
suffer diffraction over long distances.
The receiver and the transmitter have to be huge to handle that.
This technology is cost prohibitive due
to the size and equipment costs.
Obstacles to overcome, there's interference, again aluminum
siding, stucco, wiring, that sort of thing.
Is wireless power transmission compatible
with biology and ecology?
That's what needs to be looked at and studied.
Current regulatory guidelines, more research is needed, again
could be a cancer causing agent.
Performance versus efficiency needs to be studied.
Is it worth the performance and efficiency to transfer over from
a wired technology to a wireless?
Unknown side effects cannot be evaluated in a lab setting.
We've all heard of technologies that have been put out and then
later on they've been determined to cause other issues.
(Ms. Patricia Addante). Alrighty, and I'm going to talk
pretty quickly about current applications
of wireless transmission.
And how do current applications of
wireless power transmission work?
I'm sure some people may wonder that, so here are a few examples
of low power transmissions.
Wireless power is divided into two categories, there is
low-power and high-power.
And as you can see here are a few examples of low-power
transmission such as controls, controllers,
game controllers, headsets, etcetera.
Going on to high-power transmission, everything from
computers, laptops, televisions, digital photo frames.
As we said, it's still kind of on the iceberg, so in years to
come it will probably be more of this round.
We're going to watch about a minute and a half video on how
exactly the wireless power works.
[no dialogue].
(female narrator). Imagine being able to
charge your favorite handheld devices
without having to plug in each one.
With powermat, you can wirelessly
charge your favorite devices.
So, how do you do it?
Plug in your powermat, just once, simply enable your
favorite device with a receiver and drop and charge.
It's totally wireless, light and sound let
you know that charging is activated.
Plus, there's a magnetic pull.
It draws the device in to begin charging.
And powermat is smart and fast.
When a device is fully charged, it stops delivering power to
that device, and only that device, and it charges
as fast as the charger that comes with your device.
There are two mats to choose from, the home
and office mat and the portable mat.
It folds and stores in this portable case, which has a cool
magnetic closure, just drop it in your bag.
With powermat, you can charge almost any handheld device.
There are dedicated solutions for the most
popular phones, games, and music players.
Battery doors for blackberry.
A protective case for the iPhone and iPod touch.
A wrap for the Nintendo DSI and DS Light.
With these dedicated receivers, you put them on just once and
it's drop and charge, it's that easy.
Plus, there is a dock for all docking iPods and iPhones.
The power cube universal receiver.
With eight tips, it can turn almost any device into a
powermat enabled device.
Just leave it on your mat, and you will find tons of stuff in
your house that you can charge.
That's how you charge stuff without all the cords.
With powermat, you lose the cords.
(Ms. Addante). We're going to stop it a little
short, you guys get the idea of the current applications.
(Mr. Bret Rogowitz). Thanks, Trish.
Okay, real quick since this is my day stop what you're doing,
put down your pens, put your fingers down, put down your
cellphones, everything put it all down, put your pen down.
When it comes to my section for Dr. Wahby,
you put Rogo said put my stuff down.
I want you right here, focused on me
because this is the future.
This is the next big thing since the computer, next slide.
Alright, what we talked about is wireless technology, no typing
now, stay with me, this is my day.
This is what I want, this is my day.
We talked about wireless power transmission.
Did anybody see a wire in the powermat,
did anybody see the wire?
It was plugged in somewhere, right?
Alright, that's where we are at right now, we have a source
where we plug it in the wall, and there's a powermat.
But what it is is it's powered to an external source
and you have a little receiver device there,
but where are we going in the future?
We are going strictly no wires.
No wires at all, what we're looking at here right now is the
actual first invention of a wireless power transmission.
The problem is that this is a transmitter coil, this is a
receiving coil, and a lightbulb at the top, 60 watt.
The farthest distance they can actually transmit
this right now is only seven foot.
Next slide, alright what's going to happen later on,
stay with me Erv, stay with me right here.
Everybody right here with me, enjoy yourself,
have a good time, last five minutes.
Changes in your daily activities from later on, people and
devices will start acting differently, and your
power and data will be received differently.
We'll be able to go to remote locations like the [unclear
dialogue] where the [unclear dialogue] live,
in Africa, don't type.
We're going to conserve our natural resources,
no more coal, no more fossil fuels.
We're going to go to nuclear power plants again in the end,
and we're going to sustain energy, next slide.
These are some cool things that are going
to happen in the future.
We all know about the electrical car already,
you go plug it in somewhere.
This is going to be your new office,
does anybody see any cords in that office?
None.
Here's the coolest thing that I've found, an electrical shoe
that generates electricity from your shoe to
any device that's on your body.
Pretty cool, huh?
Not bad, next slide.
Later on down the road, here's what we're looking at,
transmitting power from the sun to satellites in the sky, so the
sun and solar power, satellites and space stations,
down to giant transmitters here on Earth to
receivers and central storage units.
And then it's supplied to every house, every school,
every device in the world, next slide.
Here's an actual look in space of what it's going to look like.
And that's it, what are your questions?
Stay with me, I didn't tell you to do nothing, questions?
Questions anybody, this is my day.
(male speaker). How much is the powermat?
(Mr. Rogowitz). How much is the
powermat, Trish?
(Ms. Addante). I didn't do the shopping
of it, I'm not sure.
(male speaker). I think it's 70 dollars.
(Ms. Addante). Thank you.
(male speaker). But does it only work
with attaching that receiver?
(Ms. Addante). Yes, correct, you can
use any device, you just have to have
that powermat device on the back of it.
(male speaker). It doesn't work
with all devices.
(Mr. Rogowitz). No, not all devices,
but the antenna, if this is a mouse here
that needs to be powered and it's battery-operated, you'll
have a piece that goes around this with certain batteries in
it and it will be placed on the powermat and that's
how you get your charge.
That's the current wireless technology.
(male speaker). So, first a question.
(Mr. Rogowitz). It's your day, go ahead.
(male speaker). What's the furthest
they've gotten so far, you said seven feet
with the wireless?
(Mr. Rogowitz). Pure wireless power
transmission with no cords absolutely zero
cords is only 7 foot and it's only 40% efficiency.
We are 100% efficient on powerless outlet to transmit
energy to your lamp or your stereo or something like that,
even the TV, we have TVs now today.
So in other words, if you have a power outlet against the wall
and you get a transmitter that plugs into that wall, it will
transmit the power wirelessly to that TV in your house.
(male speaker). Does that TV
need a certain receiver?
(Mr. Rogowitz). The TV already has
a receiver built into it, correct.
(male speaker). So if your neighbor
has a TV with a receiver in it, you could
steal their power, right?
(Mr. Rogowitz). Correct, totally
agree with you, no disagreement.
So yes, later on down the road, ethically and unethically we are
going to get into power stealing, sir?
(male speaker). Are there any countries
that are actually seriously considering
in investing in the infrastructure for this?
(Dan Cooper). Research is being done.
(Ms. Addante). Probably the most
research that has been put into is for TVs.
I know Sony came out with one earlier this year, but other
than that, there's nothing too much further.
(male speaker). Are there any other
countries that really want to embrace this
whole wireless?
(Mr. Rogowitz). It's not really a country,
what it is right now is it's still in
theory and it's still in development.
You go back to that guy with the lightbulb.
This gentleman right here is from MIT in the United States,
Massachusetts Institute for Technology, alright.
These are the guys that are taking it to the next step since
Nikola Tesla a long time ago, and they started this whole
process from inductor coupling and it was only
able to go two foot when it started.
And now they've been able to go seven foot
with a 100 watt lightbulb.
So, it's getting there, it's still in development.