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Wireless mobile charger or wireless power transfer

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this technology is basically based on induction coupling. in which no need of any communication wire to transfer electrical energy

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Wireless mobile charger or wireless power transfer

  1. 1. WIRELESS MOBILE CHARGER OR WIRELESS POWER TRANSFER PRESENTED BY :- GAUTAM SINGH , ELECTRICAL & ELECTRONIC ENGINEERING RADHA RAMAN INSTITUTE OF TECHNOLOGY & SCIENCE BHOPAL , MADHYA PRADESH , INDIA
  2. 2. CONTENTS 1. INTRODUCTION 2. WIRELESS CHARGING SYSTEM 3. OVERVIEW OF WIRELESS CHARGING SYSTEM 4. HOW WE CAN TRANSFER ELECTRICAL ENERGY WIRELESSLY ? 5. ELEMENT USEDS 6. WORKING PRINCIPLE 7. WHAT IS MUTUAL INDUCTANC ? 8. CIRCUTI DIAGRAM 9. HOW TO OPERATE THIS WIRELESS POWER TRANSFER CIRCUIT ? 10. TECHNICAL TRENDS 11. HIGHLIGHT OF CURRTNT ACTIVITIES 12. WIRELESS BATTERY CHARGER ADVANTAGE 13. WIRELESS POWER TRANSFER CIRCUIT APPLICATION 14. CHALLANGES 15. NEXT STEPS/ACTIONS
  3. 3. INTRODUCTION THIS IS SPECIAL KIND OF CHARGING SYSTEM IN WHICH, THERE IS NO NEED OF ANY KIND OF COMMUNICATION WIRE TO CONNECT THE POWER SUPPLY TO CHARGE IT. FROM THIS CIRCUIT WE CAN CHARGE MOBILE OR OTHER DEVICE WIRELESSLY IN A SHORT RANGE OF DISTANCE.
  4. 4. WIRELESS CHARGING SYSTEM Transfer electric power to mobile nearby devices (less than several meters) and charge batteries
  5. 5. OVERVIEW OF WIRELESS CHARGING SYSTEM Wireless Charging System How to transfer power and charge efficiently Devices which have a battery Wireless Power Transfer System How to transfer power efficiently All electric devices Difference from cable chargers Elimination of complicated wire cables Safety from electric shock Increased mobility Relatively low efficiency (about 90% efficiency of cable chargers) Considered frequency bands 20~60 kHz 80~370 kHz 6.78~13.56 MHz
  6. 6. HOW WE CAN TRANSFER ELECTRICAL ENERGY WIRELESSLY ? BY THE HELP OF INDUCTION PROCESS. BY THE HELP OF MICROWAVE. BY THE HELP OF LEASER.
  7. 7. ELEMENT USED RECEIVER CIRCUIT 1.DIODE 1N4007 2.RESISTANCE 1K OHM 3.LIGHT EMITTING DIODE 4.CAPACITOR 220 MICRO FARAD 40 VOLT 5.REGULATED INTEGRATED CIRCUIT L7805CV TRANSMITTER CIRCUIT 1.DIODE 1N4007 2.DIODE 1N4148 3.RESISTANCE 1K OHM 4.RESISTANCE 10K OHM 5.N-CHANNEL MOSFET IRF540 6.INDUCTOR 10MICRO HeNRY 7.CAPACITOR 220 MICRO FRAD 40 VOLT 8.REGULATED INTEGRATED CIRCUIT L7824CV 9.LIGHT EMITTING DIODE
  8. 8. WORKING PRINCIPLE This circuit mainly works on the principle of mutual inductance. Power is transferred from transmitter to receiver wirelessly based on the principle of “inductive coupling”.
  9. 9. “Mutual inductance” is the phenomena in which, when a current carrying conductor is placed near another conductor voltage is induced in that conductor. This is because, as the current is flowing in the conductor, a magnetic flux is induced in it. This induced magnetic flux links with another conductor and this flux induces voltage in the second conductor. Thus two conductors are said to be inductively coupled. WHAT IS MUTUAL INDUCTANC?
  10. 10. CIRCUTI DIAGRAM
  11. 11. HOW TO OPERATE THIS WIRELESS POWER TRANSFER CIRCUIT ? Initially, connect the circuit as shown in the circuit diagram. Switch on the supply. Connect the battery charger at the output of the circuit. Place the receiver coil near the transmitter coil . You can observe the charging of battery.
  12. 12. TECHNICAL TRENDS  WiTricity-Haire  WiTricity, a spin-off company from MIT  Power transfer to Full HD TV in CES 2010  Intel  12W power transfer to netbook in 3feet  Receiver coils in the cover of netbook  Independent standardization activity on 100W wireless power transfer  Sony  Power transfer to 22 LCD TV 60W  Efficiency: about 80% @ 50cm  Charging distance increases by repeaters  Qualcomm  Announcement of eZone, a wireless power transfer system, in CES2009  Maximum supportable devices: 2  Maximum charging distance: 0.2m  Qualcomm-WiPower  Takeover WiPower in 2010 for developing a wireless power transfer system  Developing power transfer system in vehicles  Charging distance: 0.05m  Fujitsu  Simultaneous charging to two mobile phones in Sep. 2010  Development of a simulator which is used for analysis of magnetic fields between multiple coils
  13. 13. HIGHLIGHT OF CURRTNT ACTIVITIES TTA PG 709 (Wireless Charging and Application) Established in Mar. 2011 Scope: Standard roadmap Power transfer interface Control mechanism 12 members - Service & Structure -Evaluation-Interface TTA PG709 Steering Committee WG 1 WG 2 WG 3
  14. 14. WIRELESS BATTERY CHARGER ADVANTAGE Usage of separate charger is eliminated. Phone can be charged anywhere and anytime. It does not require wire for charging. Easier than plug into power cable.
  15. 15. WIRELESS POWER TRANSFER CIRCUIT APPLICATION Wireless chargers can be used to charge mobiles, camera batteries, Bluetooth headsets etc. This can also be used in applications like car battery charger with little modification. This can also be used in medical devices.
  16. 16. CHALLANGES Product Diversification As market is increasing, each vendor makes the Wireless Charging system which has different structure & protocol. Wireless Charging is possible only between systems having the same structure & protocol. Frequency Issues Each vendor considers different frequency bands for Wireless Charging which disables interoperability between Wireless Charging systems Regulation Issues Each nation has different regulation for EMI/EMC, SAR, etc.
  17. 17. Standardization Activities for product diversification System & interface Control & management protocol Conformance test & certification Regulation Coordination & Compromise Frequency band EMI/EMC SAR Activities toward the global harmonization Cooperation with other SDOs Investigation of the similar activities and directions in other organizations NEXT STEPS/ACTIONS
  18. 18. REFERENCE 1. MIT BOSTON, U.S.A 2. TSHINGHUA UNIVERSITY , CHINA 3. ELECTRONIC DEVICE & CIRCUIT, BOYLSTED 4. CIRCUIT THEORY, ALEXANDER & SADIKU 5. SAMSUNG, INTEL, LG ,SONY 6. WIKIPEDIA 7. ENCYCLOPEDIA 8. YOUTUBE 9. ELECTRONICHUB.COM
  19. 19. THANK YOU

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