The document presents a wireless driven LED semiconductor lighting system, highlighting the advantages and classifications of wireless power transfer (WPT) methods such as inductive charging, capacitive coupling, and microwave transmission. It emphasizes the benefits of WPT, including efficiency, safety, and potential applications across various sectors while discussing future prospects like satellite power transmission. The conclusion notes that while initial costs may be high, wireless power technology could lead to a future with more reliable and convenient LED lighting solutions.

1. WIRELESS DRIVEN LED
SEMICONDUCTOR LIGHTING
SYSTEM
PRESENTED BY,
V M RAHUL

2. OVERVIEW
• INTRODUCTION
• WIRELESS POWER TRANSFER
• TYPES OF WIRELESS POWER TRANSFER
• WD-LED LIGHTING SYSTEM
• APPLICATIONS
• FUTURE SCOPE
• CONCLUSION
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3. INTRODUCTION
• LED Lighting system.
• Wireless power transfer.
• Wireless driven led.
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4. WIRELESS POWER TRANSFER
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• In 1890, Sir Nikola Tesla
Proposed a method of Wireless
Power Transmission.
• The forgotten invention is reborn
in 2007 by scientist’s of MIT.
• The transmission of energy from
one place to another without
using wires.
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5. ADVANTAGES
• WPT system would completely eliminates the
existing high- tension power transmission line cable.
• Can reach the places which are remote.
• High Efficiency and Low cost maintenance.
• Power Theft will be negligible.
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6. CLASSIFICATION OF THE WIRELESS
POWER TRANSMISSION SYSTEM
• Electromagnetism induction / Inductive charging.
• Capacitive coupling .
• Resonant inductive coupling .
• Microwave power transmission.
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7. ELECTROMAGNETISM INDUCTION
• Also known as inductive charging.
• Two coils:
a primary transmitter and a secondary receiver.
• Energy transfer is due to Mutual Induction.
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8. INDUCTIVE COUPLING
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• An induction coil to create an alternating electromagnetic field .
• A second induction coil takes power from the EM field and coverts
it into electrical current .
• The transmission power and efficiency affects with distance.

9. Advantage:
- It provides a safe way of connection.
- the products can be all enclosed and away
from air, water or plastic in the atmosphere
Disadvantage
- require more electronics and coils
- complex .
- high cost.
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10. CAPACITIVE COUPLING
• Consists of,
 primary power transmitter
- acting as a high frequency voltage source.
 capacitive structure
- functioning as the electric energy transfer
channel.
 power receiver
- acting as the secondary power conditioner, and
supply the electric power to the load.
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11. 11
Fig1: the structure of capacitive coupling power transfer
Fig2: the simplified Capacitive power transfer circuit

12. Features
• In the coupling part- the field is confined between metal plates.
- Capacitive structure.
• System employs electric field as the energy carrying medium .
 Advantage: Very small power loss.
 Applications:
- charging of cell phones ,digital products,
biomedical device, electric car.
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13. RESONANT INDUCTIVE COUPLING
• Near field wireless transmission
• Combination of inductive coupling and resonance
• Resonance makes two objects interact very strongly
• Inductance induces current.
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14. • Distance between the coils is increased by adding resonance to the
equation.
• Both systems should have same resonant frequency.
• The induction of electric power can be different.
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15. MICROWAVES POWER TRANSMISSION
• Belongs to far field technique.
• Transmitting energy by use of microwaves.
• Method for transferring energy to the surface of the
earth from solar power satellites.
• Steps:
• Electrical energy to microwave energy
• Capturing microwaves using rectenna.
• Microwave energy to electrical energy
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16. 16
MAGNETRON RECTENNA

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Disadvantage:
- High cost.
- Power in the transmission will interfere with
present communication systems.
BASIC BLOCK DIAGRAM OF MICROWAVE POWER TRANSFER

18. WIRELESS-DRIVEN LED LIGHTING
SYSTEM
 Advantages and Motivation:
- To be safer and more reliable .
- To make the LED lighting system waterproof.
- Flexible by using wireless power technique.
- Transferring electric power to LED lighting module through
air, water, glass and plastic without any electric connection.
- Improve the reliability to separate the drive circuit from
lighting chips.
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19. Applications:
 Wireless-driven/charging LED lighting systems
 Contactless-driven LED integrated chip/ module.
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Fig : Schematic diagram of LED lights
powered by wireless power transmission

20. FUTURE SCOPE
• Power transmission from satellite to earth.
Solar Power Satellites (SPS)
• Upcoming proof of this technology “COTA” by Ossia.
• Wireless power transfer can be used to charge equipment's.
• Wireless power transfer to charge vehicles.
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21. CONCLUSION
• Transmission without wires- a reality
• Efficient.
• Low maintenance cost. But, high initial cost
• Better than conventional wired transfer
• Energy crisis can be decreased
• In near future, world will be completely wireless
• The wireless power technique can be integrated with LED.
- LED products more convenient or reliable
-Lighting field can be more enhanced.
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22. REFERENCE
• 1.“Nobel Prize and Laureates”,
http://www.nobelprize.org/nobel_prizes/physics/laureates/2014/press.html
• 2. Wikipedia. (2012, August 7). Tesla coil [Online].
Avaliable:http://en.wikipedia.org/wiki/Tesla coil
• 3. Liang Huang and Aiguo Patrick Hu, “An overview of capacitively coupled power
transfer—a new contactless power transfer solution”, 2013 IEEE 8th Conference on
Industrial Electronics and Applications(ICIEA), pp 461 -464.
• http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=7127224&newsearch=true&qu
eryText=WIRELESS%20DRIVEN%20LED%20%20%20SEMICONDUCTOR%20LIG
HTING%20%20%20%20SYSTEM%20%0B&fname=&mname=&lname=&title=&volu
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23. QUERIES
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24. THANK YOU
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