wireless power transfer
DESCRIPTION
CONTAINS 31 SLIDS BASED ON WIRELESS POWER TRANSFER B.TECH PROJECTTRANSCRIPT
04/11/2023 R.V.S.C.E.T. EEE DEPARTMENT 1
WIRELESS POWER
TRANSFER
R.V.S.C.E.T. EEE DEPARTMENT 2
PRESENTED BY:-ANKIT KUMAR (EEE/317/10)
VIKASH KUMAR (EEE/267/10) PANKAJ KR. MEHRA (EEE/279/10)
RAKESH KUMAR (EEE/290/10)
SUBMITTED TO:- PROF. VIKRAM SAXENA (PROJECT GUIDE)
04/11/2023
04/11/2023R.V.S.C.E.T. EEE DEPARTMENT
3
CONTENTS :-
1. INTRODUCTION & HISTORY BY ANKIT KUMAR
2. INDUCTIVE RESONANCE COUPLING BY VIKASH KUMAR
3. CONSTRUCTION &OPERATION BY PANKAJ KR.MEHRA
4. APPLICATION & FUTURE BY RAKESH KUMAR
04/11/2023R.V.S.C.E.T. EEE DEPARTMENT
What is WitriCity?
4
Witricity is nothing but wireless electricity.
Transmission of electrical energy from one object to another without the use of wires is called Witricity.
Because of Witricity some of the devices won’t require batteries to operate .
04/11/2023 R.V.S.C.E.T. EEE DEPARTMENT 5
Why we need Witricity?.
WE USE WIRES…
04/11/2023 R.V.S.C.E.T. EEE DEPARTMENT 6
History of Wireless Power:
In 1899, Sir Nikola Tesla Proposed a method of Wireless Power Transmission.
As it is in Radiative mode, most of the Power was wasted and has less efficiency.
Able to light lamps over 25 miles away without using wires
The team from Massachusetts Institute of Technology, who call their invention ‘WiTricity‘.
In the first successful trial of its kind, the team was able to illuminate a 60-watt light bulb 7ft away.
Rebirth in 2007 >>
04/11/2023R.V.S.C.E.T. EEE DEPARTMENT
7
TYPES OF WITRICITY
Inductive Coupling
Resonant Inductive Coupling
04/11/2023 R.V.S.C.E.T. EEE DEPARTMENT 8
Inductive coupling
• Primary and secondary coils- not connected with wires.
• Energy transfer - due to Mutual Induction.
04/11/2023 R.V.S.C.E.T. EEE DEPARTMENT 9
Inductive coupling (contd…)• Transformer is also an example• Energy transfer devices are usually air-cored• Wireless Charging Pad(WCP),electric brushes are
some examples• On a WCP, the devices are to be kept, battery will
be automatically charged.
04/11/2023R.V.S.C.E.T. EEE DEPARTMENT
Resonance Inductive Coupling(RIC)
10
Combination of inductive coupling and resonance
Resonance makes two objects interact very strongly
04/11/2023 R.V.S.C.E.T. EEE DEPARTMENT 11
How resonance in RIC?Coil provides the inductanceCapacitor is connected parallel to
the coilEnergy will be shifting back and
forth between magnetic field surrounding the coil and electric field around the capacitor
High resonant frequency
04/11/2023R.V.S.C.E.T. EEE DEPARTMENT 12
RIC VS. INDUCTIVE COUPLING RIC is highly efficient RIC has much greater range than
inductive coupling RIC is directional when compared to
inductive coupling RIC can be one-to-many. But usually
inductive coupling is one-to-one Devices using RIC technique are highly
portable
04/11/2023 R.V.S.C.E.T. EEE DEPARTMENT
BASIC TECHNOLOGY :- WORKING CYCLE
Electricity
Magnetism
Electromagnetism
Magnetic Induction
Energy/Power Coupling
Resonance
Resonant Magnetic Coupling
04/11/2023 R.V.S.C.E.T. EEE DEPARTMENT
AIM OF THE CIRCUITS :-
1. •CONVERTION OF NORMAL FREQUENCY TO HIGH FREQUENCY
2. •CONVERTION OF INDUSED HIGH FREQUENCY TO NORMAL FREQUENCY
04/11/2023 R.V.S.C.E.T. EEE DEPARTMENT
CONVERTION OF LOW FREQUENCY INTO HIGH FREQUENCY :-
1. OSCILATOR
2. INVERTOR
3. INDUCTION COILS
04/11/2023 R.V.S.C.E.T. EEE DEPARTMENT
FIRST METHOD :-
USE OF OSCILATOR TO GENERATE A FIXED HIGH FREQUENCY
04/11/2023 R.V.S.C.E.T. EEE DEPARTMENT
SECOND METHOD :-
USE OF INVERTOR TO GENERATE REGULATED HIGH FREQUENCY
04/11/2023R.V.S.C.E.T. EEE DEPARTMENT
THIRD METHOD :-
USE OF INDUCTION COIL WITH PROPER TUNING
04/11/2023 R.V.S.C.E.T. EEE DEPARTMENT
TRANSMITER CIRCUIT :- BY MULTISIM
04/11/2023 R.V.S.C.E.T. EEE DEPARTMENT
RECIVER CIRCUIT:- BY MULTISIM
04/11/2023 R.V.S.C.E.T. EEE DEPARTMENT
COMPLETE BLOCK DYGRAM:-
04/11/2023R.V.S.C.E.T. EEE DEPARTMENT22
Advantages of WITRICITY No wires Need for battery is eliminated No e-waste Efficient energy transfer Harmless, if field strengths under
safety levels Maintenance cost is less
04/11/2023R.V.S.C.E.T. EEE DEPARTMENT23
Disadvantages Distance constraint Field strengths have to be under
safety levels Initial cost is high In RIC, tuning is difficult High frequency signals must be the
supply
04/11/2023 R.V.S.C.E.T. EEE DEPARTMENT 24
Applications
Electric automobile charging
Static and moving
Consumer electronics
Industrial purposes
04/11/2023 R.V.S.C.E.T. EEE DEPARTMENT 25
IN MEDICAL
04/11/2023 R.V.S.C.E.T. EEE DEPARTMENT 26
IN DEFENSE
eliminating the need for disposable batteries or a power cord connecting the helmet
04/11/2023 R.V.S.C.E.T. EEE DEPARTMENT 27
IN VEHICLES
04/11/2023R.V.S.C.E.T. EEE DEPARTMENT
IN CONSUMER ELECTRONICS
28
04/11/2023 R.V.S.C.E.T. EEE DEPARTMENT 29
Conclusion
• Transmission without wires is possible• Efficient• 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
04/11/2023 R.V.S.C.E.T. EEE DEPARTMENT 30
THANK YOU!