WIRELESS POWER TRANSFER

CONTAINS 31 SLIDS BASED ON WIRELESS POWER TRANSFER B.TECH PROJECT

1. WIRELESS POWER TRANSFER 1/8/2014 1 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) 1/8/2014 R.V.S.C.E.T. EEE DEPARTMENT 2

3. 1/8/2014 R.V.S.C.E.T. EEE DEPARTMENT 3 CONTENTS :- 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

4. What is WitriCity ? 1/8/2014 R.V.S.C.E.T. EEE DEPARTMENT 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 .

5. Why we need Witricity ? . WE USE WIRES … 1/8/2014 5 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 >> 1/8/2014 6 R.V.S.C.E.T. EEE DEPARTMENT

7. Types of WiTricity Inductive Coupling Resonant Inductive Coupling 1/8/2014 R.V.S.C.E.T. EEE DEPARTMENT 7

8. Inductive coupling Primary and secondary coils- not connected with wires. Energy transfer - due to Mutual Induction. 1/8/2014 R.V.S.C.E.T. EEE DEPARTMENT 8

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. 1/8/2014 R.V.S.C.E.T. EEE DEPARTMENT 9

10. Resonance Inductive Coupling(RIC) 1/8/2014 R.V.S.C.E.T. EEE DEPARTMENT 10 Combination of inductive coupling and resonance Resonance makes two objects interact very strongly

11. How resonance in RIC? Coil provides the inductance Capacitor is connected parallel to the coil Energy will be shifting back and forth between magnetic field surrounding the coil and electric field around the capacitor High resonant frequency 1/8/2014 R.V.S.C.E.T. EEE DEPARTMENT 11

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 1/8/2014 R.V.S.C.E.T. EEE DEPARTMENT 12

13. BASIC TECHNOLOGY :- WORKING CYCLE 1/8/2014 R.V.S.C.E.T. EEE DEPARTMENT

14. AIM OF THE CIRCUITS :- 1/8/2014 R.V.S.C.E.T. EEE DEPARTMENT

15. CONVERTION OF LOW FREQUENCY INTO HIGH FREQUENCY :- 1/8/2014 R.V.S.C.E.T. EEE DEPARTMENT

16. FIRST METHOD :- 1/8/2014 R.V.S.C.E.T. EEE DEPARTMENT USE OF OSCILATOR TO GENERATE A FIXED HIGH FREQUENCY

17. SECOND METHOD :- 1/8/2014 R.V.S.C.E.T. EEE DEPARTMENT USE OF INVERTOR TO GENERATE REGULATED HIGH FREQUENCY

18. THIRD METHOD :- 1/8/2014 R.V.S.C.E.T. EEE DEPARTMENT USE OF INDUCTION COIL WITH PROPER TUNING

19. TRANSMITER CIRCUIT :- BY MULTISIM 1/8/2014 R.V.S.C.E.T. EEE DEPARTMENT

20. RECIVER CIRCUIT:- BY MULTISIM 1/8/2014 R.V.S.C.E.T. EEE DEPARTMENT

21. COMPLETE BLOCK DYGRAM:- 1/8/2014 R.V.S.C.E.T. EEE DEPARTMENT

22. 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 1/8/2014 R.V.S.C.E.T. EEE DEPARTMENT 22

23. 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 1/8/2014 R.V.S.C.E.T. EEE DEPARTMENT 23

24. Applications Electric automobile charging Static and moving Consumer electronics Industrial purposes 1/8/2014 R.V.S.C.E.T. EEE DEPARTMENT 24

25. IN MEDICAL 1/8/2014 R.V.S.C.E.T. EEE DEPARTMENT 25

26. IN DEFENSE 1/8/2014 R.V.S.C.E.T. EEE DEPARTMENT 26 eliminating the need for disposable batteries or a power cord connecting the helmet

27. IN VEHICLES 1/8/2014 R.V.S.C.E.T. EEE DEPARTMENT 27

28. IN CONSUMER ELECTRONICS 1/8/2014 R.V.S.C.E.T. EEE DEPARTMENT 28

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 1/8/2014 R.V.S.C.E.T. EEE DEPARTMENT 29

30. 1/8/2014 R.V.S.C.E.T. EEE DEPARTMENT 30 THANK YOU!