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WITRICITY FIELD THEORY
- 1. FIELD THEORY WITRICITY PREET|patel (151310109032) 2nd Year Electrical AIIE
- 2. CONTENTS: ⢠HISTORY ⢠BASICS ⢠WORKING ⢠ADVANTAGES ⢠DISADVANTAGES ⢠CONCLUSION
- 3. 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. 3
- 4. The forgotten invention is reborn in 2007 ⢠The idea of wireless electricity has been around since the early days of the Tesla coil. But thanks to a group of MIT scientists, team led by Marin Soljacic and named it "WiTricity" 4
- 5. Short range: Inductive Coupling Medium range: Resonant Induction Long range: Electromagnetic Wave Power Transfer 5 Methods of transfer
- 6. WORKING 1. Power from mains to antenna, which is made of copper. 2. Antenna resonates at a frequency of about 10MHz, producing electromagnetic waves. 3. Tails' of energy from antenna tunnel up 2m. 4. Electricity picked up by laptop antenna, which must also be resonating at 10 MHz Energy used to recharge device. 5. Energy transferred to laptop re-absorbed by source antenna. People/other objects not affected as not resonating at 10MHz.
- 7. 7
- 8. It will make products : ⢠More Convenient: -No manual recharging or changing batteries. -Eliminate costly power cords. ⢠More Reliable: -Never run out of battery power. -Reduce product failure rates by fixing the âweakest linkâ: flexing wiring and mechanical interconnects. ⢠More Environmentally Friendly: -Reduce use of disposable batteries. -Use efficient electric âgrid powerâ directly instead of inefficient battery Charging. Benefits of WiTricity 8
- 9. ADVANTAGES ⢠Safe, fairly efficient, good range. ⢠No need of line of sight. ⢠No need of power cables and batteries. ⢠Magnetic fields interact weakly with biological masses (humans), and energy is only transmitted between resonating objects 9
- 10. DISADVANTAGES ⢠Transmissions possible only in few meters ⢠Possibility of âenergy theftâ ⢠Efficiency decreases with distance ⢠The resonance condition should be satisfied. 10
- 11. APPLICATIONS ⢠Consumer electronics ⢠Transportation ⢠Industry applications ⢠Other applications 1. Medical devices 2. Military applications 3. Robots 11
- 12. THANK|you 12
Hinweis der Redaktion
- Tesla coil
- MIT powered 60 watt light bulb from 2 meters (7 ft) at 40% efficiency
- Splashpower Ltd. is a United Kingdom-based company founded in June 2001
- Need more light in your office, no need for electrician. Simply place the lamp where ever you need it.
- will this possibly cause Leukemia or some kind of cancer. That fear is always raised about those living near large power transformers and lines. The fear has never been scientifically justified as being true but if this wireless power were in every room in every house in the United States it would be a matter of time before we would possibly know because the numbers of Leukemia patients would probably drastically go up
- in the macroscopic world, this scheme could potentially be used to deliver power to robots and/or computers in a factory room, or electric buses on a highway (source-cavity would in this case be a ââpipeââ running above the highway). In the microscopic world, where much smaller wavelengths would be used and smaller powers are needed, one could use it to implement optical inter-connects for CMOS electronics, or to transfer energy to autonomous Nano-objects (e.g. MEMS or Nano robots) without worrying much about the relative alignment between the sources and the devices.