Wireless Power Transmission

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Wireless Power Transmission
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Overview:
 What Is Wireless Power Transmission(WPT)?
 Why Is WPT?
 History Of WPT
 Working Principle Of WPT
 Types Of WPT
 Advantages And Disadvantages Of WPT
 Conclusion

 The Transmission Of Power From One Place To Another Without Using
Wires, Cables, Or Chords.
 But, The Wireless Power Transmission Is Made Possible By Using
Various Technologies Like Microwave, Laser, And Em Waves.
 Nikolas Tesla Realized The Concept Of Wireless Power Transfer.
What Is WPT?:

Why Not Wires?
 As Per Studies, Most Electrical Energy Transfer Is Through
Wires.
 Most Of The Energy Loss Is A Loss During Transmission
• On an average, more than 30%.
• In India, it exceeds 40%.

History Of WPT:
 Nikola Tesla in late 1890s
 Pioneer of induction techniques
 His vision for "world wireless system“
 The 187 Feet Tall Tower To Broadcast
Energy

History Of WPT (Continue…)
 All People Can Have Access To Free Energy
 Due To Shortage Of Funds, Tower Did Not Operate
 Tesla Was Able To Transfer Energy From One Coil To Another Coil
 He Managed To Light 200 Lamps From A Distance Of 40 Km

Block Diagram Of WPT:

Working Principle Of WPT:
 By Converting The AC Power To DC Power Using Rectifiers And
Filters And Then Again Converting It Back To AC At High
Frequency Using Inverters.
 This Low Voltage High Frequency Ac Power Then Passes From
The Transformer Primary To Its Secondary And Is Converted To
Dc Power Using Rectifier, Filter And Regulator Arrangement.

Types Of WPTs:
 Inductive Coupling
 Microwave Power Transmission
 Laser power Transmission

Inductive Coupling:
 It Is Most Prominent Methods Of Transferring Energy.
 Used For Near-field Power Transmission.
 The Power Transmission Takes Place Through Mutual
Inductance Between The Two Conductive Materials

Microwave Power Transmission:
 This Involves By Converting The AC Power To RF Power
And Transmitting It Through Space And Again
Reconverting It To AC Power At The Receiver.

Laser Power Transmission:
 It involves the use of LASER beam to transfer power in
the form of light energy.
 The laser gets powered using sources like sun or any
electrical generator and accordingly generates high
intensity focused light.

Laser Power Transmission Diagram:

Advantages:
 No Wires
 No E-waste
 Efficient Energy Transfer
 Unaffected By Day-night Cycle, Weather Or Season

Disadvantages:
 Initial Cost Is High.
 High- Frequency Signal Must Be The Supply.
 Maintenance Is Complicated.
Applications:
 Wireless parking charger.
 Wireless electronic charger.

Conclusion:
 More Reliable Than Ground - Based Solar Power.
 Low Maintenance Cost. But, Initially High Cost.
 If We Develop This, We Need Not Bother About The Exhaustion Of
Natural Resource.
 In Near Future, The World Will Be Completely Powered With
Wireless Technology.

Wireless Power Transmission

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