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SEMINAR PRESENTRATION TOPIC
Wireless Power Transmission
(Electrical department )
SUBMITTED BY : Ramesh Kumar Maurya
Roll no.: 1742220034
Department of EE 4th year
Bansal Institute Of Engineering And
Technology Lucknow
Introduction
Definition
Types of WPT
 Microwave Power Transmission
 Inductive Coupling Power Transmission
 Laser Power Transmission
 Working example of wireless power transfer
 Benefits Of WPT
Advantages and disadvantage
 Applications
Conclusion
References
•Wireless power transmission technology is not a new
technology.
•In 1980, it was demonstrated by Nikola Telsa. There are three
main systems used for wireless electricity transmission: solar
cells, microwaves and resonance.
• In an electrical device, microwaves are used to transmit
electromagnetic radiation from a source to a receiver. The name
wireless power transmission states the transfer of electrical
power from a source to an electrical device without the help of
wires.
• Basically, it involves two coils: a transmitter and a receiver coil.
The transmitter coil is powered by an AC current to produce a
magnetic field, which in turn induces a voltage in the receiver
coil.
.
• As the word wireless means “without wire”.
• Wireless energy transfer or wireless power is the
transmission of electrical energy from a power source to an
electric load without interconnecting man made
•
conductors.
Wireless transmission is useful in cases where
interconnecting wires are inconvenient, hazardous or
impossible.
 Microwave Power Transmission
 Inductive Coupling Power Transmission
 Laser Power Transmission
oWilliam C Brown, the pioneer in the WPT technology, has designed and
exhibited to show how power can be transmitted through free space by
microwaves.
oThe microwave power source generates microwave power which is
controlled by the electronic control circuits.
oThe waveguide circulator protects the microwave source from the
reflected power, which is connected through the co-ax waveguide adaptor.
o The tuner contests the impedance between the microwave source and
transmitting antenna. Then, based on the signal propagation direction, the
attenuated signals are separated by the directional coupler.
oThe transmitting antenna emits the power regularly through free space to
the receiving antenna.
o Inductive coupling method is the most important methods transferring
energy wirelessly through inductive coupling.
o Basically, it is used for near -field power transmission.
o The power transmission takes place between the two conductive materials
through mutual inductance. The general example of inductive coupling
power transmission is a transformer.
o A LASER is used to transfer power in the form of light energy, and
the power is converted to electric energy at the receiver end. The
LASER gets powered using different sources like sun, electricity
generator or high-intensity-focused light. The size and shape of the
beam are decided by a set of optics. The transmitted LASER light is
received by the photo-voltaic cells, that converts the light into
electrical signals. Usually, it uses optical-fiber cables for transmission.
An AC 230V 50Hz to AC 20 KHz at 12V circuit. The AC, 50Hz is rectified by a
BR1 and the DC is derived again, and then made to AC by transistors
switching at 40KHz. This is connected to another HF transformer( high
frequency) .
The output of which is then fed to a resonating coil which acts as a primary of
another air-core transformer. Then, the secondary high frequency ID is fed to
a second rectifier to drive a DC load.
The main concept of this wireless power transfer in 3D space is, air core
transformer operates at 40KHz and by the air core, one cannot transfer 50Hz
AC power
 WPT system completely reduces existing high-tension
power transmission cables, substations and towers
between the consumers and generating station.
 The cost of the distribution and transmission become
less.
 The cost of the electrical energy to the consumers also
reduces.
 The power could be transmitted to places to which the
wired transmission is not possible.
Advantages
 Simple design
 Lower frequency operation
 Low cost
 Practical for short distance
Disadvantage
 High power loss
 Non-directionality
 Inefficient for longer distances
 The largest application of the WPT is the production of
power by placing satellites with giant solar arrays in
Geosynchronous Earth Orbit and transmitting the
power as microwaves to the earth known as Solar
Power Satellites (SPS).
 WPT is used in moving targets like fuel-free-electric
vehicles, fuel- free airplanes, fuel-free rockets and
moving robots.
 The other applications of WPT are Wireless power
source or Ubiquitous Power Source, RF Power
Adaptive Rectifying Circuits and Wireless sensors.
o Low maintenance cost. But, high initial cost
Better than conventional wired transfer
Energy crisis can be decreased
Low loss
In near future, world will be completely wireless
Peter Vaessen,” Wireless Power
Transmission”, Leonardo Energy,
September 2009C.C. Leung, T.P. Chan, K.C.
Lit, K.W. Tam and LeeYi Chow, “Wireless
Power Transmission and Charging Pad”
David Schneider, “Electrons unplugged”, IEEE
Spectrum, May 2010Shahrzad Jalali Mazlouman,
Alireza Mahanfar, Bozena Kaminska, “Mid-
range Wireless Energy Transfer Using Inductive
Resonance for Wireless Sensors”
Chunbo Zhu, Kai Liu, Chunlai Yu, Rui Ma,
Hexiao Cheng, “Simulation and Experimental
Analysis on Wireless Energy Transfer Based on
o Magnetic Resonances”, IEEE Vehicle Power and
o Propulsion Conference
Wireless power transmission

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Wireless power transmission

  • 1. SEMINAR PRESENTRATION TOPIC Wireless Power Transmission (Electrical department ) SUBMITTED BY : Ramesh Kumar Maurya Roll no.: 1742220034 Department of EE 4th year Bansal Institute Of Engineering And Technology Lucknow
  • 2. Introduction Definition Types of WPT  Microwave Power Transmission  Inductive Coupling Power Transmission  Laser Power Transmission  Working example of wireless power transfer  Benefits Of WPT Advantages and disadvantage  Applications Conclusion References
  • 3. •Wireless power transmission technology is not a new technology. •In 1980, it was demonstrated by Nikola Telsa. There are three main systems used for wireless electricity transmission: solar cells, microwaves and resonance. • In an electrical device, microwaves are used to transmit electromagnetic radiation from a source to a receiver. The name wireless power transmission states the transfer of electrical power from a source to an electrical device without the help of wires. • Basically, it involves two coils: a transmitter and a receiver coil. The transmitter coil is powered by an AC current to produce a magnetic field, which in turn induces a voltage in the receiver coil. .
  • 4. • As the word wireless means “without wire”. • Wireless energy transfer or wireless power is the transmission of electrical energy from a power source to an electric load without interconnecting man made • conductors. Wireless transmission is useful in cases where interconnecting wires are inconvenient, hazardous or impossible.
  • 5.  Microwave Power Transmission  Inductive Coupling Power Transmission  Laser Power Transmission
  • 6. oWilliam C Brown, the pioneer in the WPT technology, has designed and exhibited to show how power can be transmitted through free space by microwaves. oThe microwave power source generates microwave power which is controlled by the electronic control circuits. oThe waveguide circulator protects the microwave source from the reflected power, which is connected through the co-ax waveguide adaptor. o The tuner contests the impedance between the microwave source and transmitting antenna. Then, based on the signal propagation direction, the attenuated signals are separated by the directional coupler. oThe transmitting antenna emits the power regularly through free space to the receiving antenna.
  • 7. o Inductive coupling method is the most important methods transferring energy wirelessly through inductive coupling. o Basically, it is used for near -field power transmission. o The power transmission takes place between the two conductive materials through mutual inductance. The general example of inductive coupling power transmission is a transformer.
  • 8. o A LASER is used to transfer power in the form of light energy, and the power is converted to electric energy at the receiver end. The LASER gets powered using different sources like sun, electricity generator or high-intensity-focused light. The size and shape of the beam are decided by a set of optics. The transmitted LASER light is received by the photo-voltaic cells, that converts the light into electrical signals. Usually, it uses optical-fiber cables for transmission.
  • 9. An AC 230V 50Hz to AC 20 KHz at 12V circuit. The AC, 50Hz is rectified by a BR1 and the DC is derived again, and then made to AC by transistors switching at 40KHz. This is connected to another HF transformer( high frequency) . The output of which is then fed to a resonating coil which acts as a primary of another air-core transformer. Then, the secondary high frequency ID is fed to a second rectifier to drive a DC load. The main concept of this wireless power transfer in 3D space is, air core transformer operates at 40KHz and by the air core, one cannot transfer 50Hz AC power
  • 10.  WPT system completely reduces existing high-tension power transmission cables, substations and towers between the consumers and generating station.  The cost of the distribution and transmission become less.  The cost of the electrical energy to the consumers also reduces.  The power could be transmitted to places to which the wired transmission is not possible.
  • 11. Advantages  Simple design  Lower frequency operation  Low cost  Practical for short distance Disadvantage  High power loss  Non-directionality  Inefficient for longer distances
  • 12.  The largest application of the WPT is the production of power by placing satellites with giant solar arrays in Geosynchronous Earth Orbit and transmitting the power as microwaves to the earth known as Solar Power Satellites (SPS).  WPT is used in moving targets like fuel-free-electric vehicles, fuel- free airplanes, fuel-free rockets and moving robots.  The other applications of WPT are Wireless power source or Ubiquitous Power Source, RF Power Adaptive Rectifying Circuits and Wireless sensors.
  • 13. o Low maintenance cost. But, high initial cost Better than conventional wired transfer Energy crisis can be decreased Low loss In near future, world will be completely wireless
  • 14. Peter Vaessen,” Wireless Power Transmission”, Leonardo Energy, September 2009C.C. Leung, T.P. Chan, K.C. Lit, K.W. Tam and LeeYi Chow, “Wireless Power Transmission and Charging Pad” David Schneider, “Electrons unplugged”, IEEE Spectrum, May 2010Shahrzad Jalali Mazlouman, Alireza Mahanfar, Bozena Kaminska, “Mid- range Wireless Energy Transfer Using Inductive Resonance for Wireless Sensors” Chunbo Zhu, Kai Liu, Chunlai Yu, Rui Ma, Hexiao Cheng, “Simulation and Experimental Analysis on Wireless Energy Transfer Based on o Magnetic Resonances”, IEEE Vehicle Power and o Propulsion Conference