2. WIRELESS POWER TRANSMISSION?
The transmission of energy from one place to
another without using the wires.
Were as the conventional energy is using the
wires. But, the wire transmission is made
possible by using various technologies.
Ideal for continuous or instantaneous supply
of electricity.
3. WPT BEGINNING:
Inventor of WPT is “Nikola
Tesla” in 1890’s.
WPT experiments at
Wardenclyffe.
He managed to light 200 lamps
at a time from 40kms at his first
attempt at Wardenclyffe.
4. TYPES OF WPT:
SHORT RANGE: Device which
is almost in contact with the
charger.
MEDIUM RANGE: It covers a
range of few meters.
LONG RANGE: It covers the
range in miles
5. WPT THROUGH MICROWAVES
TRASMISSION:
FROM THE SATELLITE:
solar power from the satellite is send to earth
using a microwave transmitter.
It will be received at a “RECTENNA” which is
located on the earth.
Recent developments suggest that power can be
sent to earth using a laser.
6. THE 3 MAIN COMPONENTS OF
WPT :
1) MICROWAVE TRANSMITTERS:
Frequency 2.45GHz microwave beam.
2)TRANSMITTING ANTENNA:
7. 3)RECTENNA:
A rectenna is a rectifying antenna, a special type of
antenna that is used to convert microwave energy into
alternate current electricity.
9. POWER TO MOBILE
DEVICES:
If microwave beams
carrying power could be
beamed uniformly over the
earth they could power cell
phones.
But the biggest problem is
that the antenna would have
to be 25-30cm square.
10. LOW ORBIT:
Communication industry
proposing to have hundreds of
satellites in low earth orbital.
These satellite will use
microwaves to beam
communications to ground.
Since low orbital microwave
beam would spread less, the
ground based rectenna could be
smaller.
11. ADVANTAGES:
1. Wireless Power Transmission system would
completely eliminates the existing high-tension
power transmission line cables, towers and sub
stations between the generating station and
consumers and facilitates the interconnection of
electrical generation plants on global scale.
2. The power could be directed to any point on the
earth’s surface
3. The power density would be uninterrupted By
darkness, clouds, or precipitation, which are the
problems encountered with earth based solar arrays.
12. …continue
4. The realization of the SPS concept holds great
promises for solving energy crisis.
5. No moving parts.
6. No fuel required.
7. No waste product.
.
13. DIS-ADVANTAGES:
1. The main draw back of solar energy transfer from
orbit is the storage of electricity during off peak
demand hours .
2. The entire structure is massive
3. High cost and require much time for construction.
4. Radiation hazards associated with the system.
5. Risks involved with malfunction.
6. High power microwave source and high gain antenna
can be used to deliver an intense burst of energy to a
target and thus used as a weapon.
14. CONCLUSION:
The concept of Microwave Power
transmission offers greater possibilities for
transmitting power with negligible losses and
ease of transmission As we ” don’t need
cables, pipes, or copper wires to receive
power. We can send it to you like a cell
phone call – where you want it, when you
want it, in real time”. We can expect with
certitude that in next few years .
