WIRELESS POWER TRANSFER
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Transcript of WIRELESS POWER TRANSFER
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04/11/2023 R.V.S.C.E.T. EEE DEPARTMENT 1
WIRELESS POWER
TRANSFER
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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
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04/11/2023R.V.S.C.E.T. EEE DEPARTMENT
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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
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04/11/2023R.V.S.C.E.T. EEE DEPARTMENT
What is WitriCity?
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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 .
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04/11/2023 R.V.S.C.E.T. EEE DEPARTMENT 5
Why we need Witricity?.
WE USE WIRES…
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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 >>
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TYPES OF WITRICITY
Inductive Coupling
Resonant Inductive Coupling
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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.
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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.
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04/11/2023R.V.S.C.E.T. EEE DEPARTMENT
Resonance Inductive Coupling(RIC)
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Combination of inductive coupling and resonance
Resonance makes two objects interact very strongly
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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
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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
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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
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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
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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
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04/11/2023 R.V.S.C.E.T. EEE DEPARTMENT
FIRST METHOD :-
USE OF OSCILATOR TO GENERATE A FIXED HIGH FREQUENCY
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04/11/2023 R.V.S.C.E.T. EEE DEPARTMENT
SECOND METHOD :-
USE OF INVERTOR TO GENERATE REGULATED HIGH FREQUENCY
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04/11/2023R.V.S.C.E.T. EEE DEPARTMENT
THIRD METHOD :-
USE OF INDUCTION COIL WITH PROPER TUNING
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04/11/2023 R.V.S.C.E.T. EEE DEPARTMENT
TRANSMITER CIRCUIT :- BY MULTISIM
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04/11/2023 R.V.S.C.E.T. EEE DEPARTMENT
RECIVER CIRCUIT:- BY MULTISIM
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04/11/2023 R.V.S.C.E.T. EEE DEPARTMENT
COMPLETE BLOCK DYGRAM:-
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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
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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
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Applications
Electric automobile charging
Static and moving
Consumer electronics
Industrial purposes
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04/11/2023 R.V.S.C.E.T. EEE DEPARTMENT 25
IN MEDICAL
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IN DEFENSE
eliminating the need for disposable batteries or a power cord connecting the helmet
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04/11/2023 R.V.S.C.E.T. EEE DEPARTMENT 27
IN VEHICLES
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04/11/2023R.V.S.C.E.T. EEE DEPARTMENT
IN CONSUMER ELECTRONICS
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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
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04/11/2023 R.V.S.C.E.T. EEE DEPARTMENT 30
THANK YOU!