Wireless power transmission

Presented by

S.P.Tejashwani

08AG1A0244

OVERVIEW OF THE PRESENTATION

• Abstract• What is wireless power transmission

system??• Types of WPT :

techniques to transfer energy wirelessly

• Advantages and disadvantages• applications• conclusion

ABSTRACT

•Transmitting power without using wires

•This method provides high efficiency, low transmission cost and avoids power theft

What is WPT ??

• The transmission of energy from one place to another without using wires

• Conventional energy transfer using wires

• Wireless transmission is made possible by using various techniques

Why not wires ??

• Energy loss during transmission

On average 30% In india it exceeds

40%• Power theft problems

Why wpt ??

Reliable Efficient Fast Low maintenance Can be used for short range or long range

TYPES AND TECHNOLOGIES OF WPT

TYPES AND TECHNOLOGIES OF WPT

•NEAR FIELD TECHNIQUES

Inductive coupling Resonant inductive coupling

• FAR FIELD TECHNIQUES Microwave power transmission laser power transmission

Inductive coupling

• primary and secondary not connected with wires•Energy transfer due to mutual induction•Transformer ,wireless charging pad, electric brushes are some of the examples

Resonance inductive coupling (ric)

• combination of inductive coupling and resonance•Coil provides the inductance•Energy will be shifting back and forth between magnetic field surrounding the coil and electric field around the capacitor

FAR FIELD ENERGY TRANSFER

Microwave power transfer

• Transfers power from one place to another.two places being in line of sight usually.•Steps 1.electrical energy to microwave energy 2.capturing microwaves using rectenna 3. microwave energy to electrical energy

LASER TRANSMISSION

• Laser is highly directional• Not dispersed for very long• Gets attenuated when propogates

through atmosphere• Simpler receiver• Cost efficient

APPLICATIONS

•Electric mobile charging•Consumer electronics•Industrial purposes•Solar power satellites•Transfers energy to remote area

CONCLUSION