Wireless power transmission

Problem ?

Are you sick of tangled wires??

Ever been in a messy situation with your cables?

Getting tired of always looking for a socket?

Introduction

Conventional energy transfer is done through wires

However transmission of energy from one place to another has been made POSSSIBLE

Problems solved

• No Tangled Wires
• No need for electrical sockets
• Decreases energy loss during transmission

qualities

• Reliable
• Fast
• Efficient
• Low Maintainence

History

Nikola Tesla in 1890s

Vision for "World Wireless System"

187 feet tall tower to broadcast energy

Due to shortage of funds, tower did not operate

Light 200 lamps from 40 km away

Marin Solajacic from MIT

Witricity

THeory

Resonant Inductive Coupling(RIC)

Combination of inductive coupling and resonance

Resonance makes 2 objects interact very strongly

Resonance in RIC

• Coil provides the inductance
• Capacitor is connected parallel to the coil
• Energy shifts back and forth from magnetic and electrical field
• Radiation loss will be negligible

Near field Energy transfer

Advantages of near field techniques

• No Wires
• No e-waste
• No need for battery
• Efficient energy transfer using RIC
• Harmless and Low Maintenance Cost

Disadvantages of near field techniques

• Distance Constraint
• Field Strength have to be under safety levels
• Initial cost is high
• In RIC, tuning is difficult
• High Frequency signals must be high

far field energy transfer

• Radiative
• Needs Line of Sight
• Uses LASER of Microwave
• Aims at high power transfer
• Tesla Tower was built for this

advantages of far field energy transfer

• Efficient and Easy
• No need for grids and substations
• Low Maintenance Cost
• Can reach remote areas
• Effective when transmitting and receiving end are along a line of sigh

Disadvantages of far field energy transfer

• Radiative
• Needs line of sight
• Initial Cost is High

Applications

Near Field energy Transfer

• Electric Automobile Charging
• Consumer Electronics
• Industrial Purposes

Far Field energy transfer

• Solar Powered Satellites
• Energy to remote areas
• Can Broadcast Energy globally

Conclusion

Wireless Power transmission

• Is already a reality
• Easy and Efficient
• Low Maintenance Cost
• Energy Crisis can be decreased
• In Near Future, creates a world without wires

THANK YOU