WIRELESS POWER TRANSMISSION -A Next Generation Power Transmission
- 1. SPHOORTHY ENGINEERING COLLEGE PRESENTED BY GUNTOJU SAI KUMAR B.TECH , Dept . of EEE 2ND YEAR (16N81A0236)
- 2. SLIDE PLAN • Introduction • Why not wires • Why WPT • History of WPT • Types of WPT • Advantages and disadvantages of WPT • Future scope • Conclusion
- 3. INTRODUCTION • Wireless power is the transmission of electrical energy from a power source to an electric load without interconnecting man made conductors • Wireless transmission is useful in cases where interconnecting wires are inconvenient , hazardous or impossible WIRELESS POWER TRANSMISSION
- 4. WHY NOT WIRES ??? • As per the studies , most electrical energy transfer is through wires and most of the energy loss is during transmission through wires. • On average , the loss is more than 30% in world. • In INDIA , the loss exceeds 40%. • High cost and difficult installation.
- 5. PROBLEM IN PRESENT SCENARIO • Trillions of dollars spent on wires and installation of electric poles. • Estimated that 40 billions of disposable batteries per year added to the e-waste burden
- 6. WHY DO WE NEED WIRELESS ELECTRICITY ??? • The ever increasing power demand • The need of electricity in every nook and corner of the world • The demand of eco –friendly power • Requirement of efficient and reliable power • To reduce dependence on wires and batteries
- 7. HISTORY • Sir NICOLA TESLA was the first one to propose and research the idea of wireless power transmission . He is indeed the “FATHER OF WIRELESS” . • In 1899 , since than many scholars and scientists have been working to make his dream a reality.
- 8. HISTORY • His vision for “world wireless system” • The 187 feet tall tower to broadcast energy • All people can have access to free energy • Due to shortage of funds , tower did not operate
- 9. HISTORY He managed to light 200 lamps from a distance of 40 kilo meters
- 10. THE FORGOTTEN INVENTION IS REBORN IN 2007 RESONANCE COUPLING The idea of TESLA is taken in to research after 100 years by a team lead by “MARIN SOLJACIC” from MIT The project is named as “WiTricity”
- 11. TYPES AND TECHNOLOGIES OF WPT Near field techniques Inductive coupling Resonant inductive coupling Far field techniques Microwave power transmission (MPT) LASER power transmission
- 12. INDUCTIVE COUPLING • Primary and secondary coils are not connected with wires • Energy transfer is due to mutual induction • It is preferred because it is comfortable • Less use of wires • Shock proof
- 13. RESONANCE INDUCTIVE COUPLING (RIC) • Combination of inductive coupling and resonance • Resonance makes two objects interact very strongly • Inductance induces current
- 14. MICROWAVE POWER TRANSMISSION (MPT) Transfers high power from one place to another. Two places being in line of sight usually Operates in the frequency range of 1-40GHz Operates at the highest efficiency at 2.45GHz Steps • Electrical energy to microwave energy • Capturing microwaves using rectenna • Microwave energy to electical energy
- 15. MICROWAVE POWER TRANSMISSION (MPT) • AC cannot be directly converted to microwave energy • AC is converted to DC first • DC is converted to microwaves using magnetron • Transmitted waves are received at rectenna which rectifies, gives DC as the output • DC is converted back to AC
- 16. on going research on wpt • On 12th march ,2015 ,Japanese researchers have successfully transmitted electric power wirelessly to an pinpoint target using microwaves, an advance that brings space-based solar power closer to reality • According to japan aerospace exploration agency (JAXA) the researchers were able to transform 1.8 kilowatts of electric power into microwave and transmit it with accuracy into a receiver located 55 metres away
- 17. advantages • Efficient and reliable power • Creation of a shock free environment • Provides solution to the ever increasing demand for power • A solution to reduce e-waste a more safe environment disadvantages •For short and mid range transfer system has to be set at the right frequency or there would be no power transfer •For long range the installation cost is high
- 18. FUTURE SCOPE In future transmission will be without wires. It would be more efficient. Low maintenance cost , but high initial cost. Better than conventional wired transfer. Energy crisis can be decreased. Low power loss. In near future , world will be completely wireless.
- 19. Conclusion • Wireless electricity is not just a great idea but an urgent measure that has to taken to deal with the current energy crisis • We realize that wireless energy transfer & electricity may play a significant role in the future in the field of transmission of electric power
- 20. BE AN ENGINEER , SAVE THE WORLD FOR THE SUPPORT