Wireless power transffer WITH SUPPORTIVE ,EFFECTIVE AND UNDERSTANDING SLIDES
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This document summarizes a seminar on wireless power transfer systems. It discusses various techniques for wireless power transmission including inductive coupling for short ranges, resonant coupling for medium ranges up to a few meters, power transmission through microwaves, and solar power satellite systems for transmitting power from space to the ground. The history of wireless power transmission is also summarized, including Nikola Tesla's experiments with transferring power through resonant coils in 1899 and more recent MIT experiments achieving 40% efficiency over 2 meters using inductive coils.
Wireless power transffer WITH SUPPORTIVE ,EFFECTIVE AND UNDERSTANDING SLIDES
- 1. A SEMINAR ON WIRELESS POWER TRANSFER SYSTEM Submitted to: Submitted By: MR. SUNIL GOYAL BALVEER SINGH HADA H.O.D. FINAL YEAR ELECTRICAL DEPARTMENT
- 2. INTRODUCTION It is transmission of power without using wires In this technique microwaves are used for transmission of electrical power. Power at very high frequency is transmitted Efficiency is increased by increasing the frequency
- 4. HISTORY In 1899 Nicola Tesla tranfered electrical power through ‘Tesla coils’. Tesla coil a high mast of 200-ft with a 3 ft-diameter ball at its top. He fed 300 kW power to the Tesla coil resonated at 150 kHz. The RF potential at the top sphere reached 100 MV.
- 5. History contd.. MIT started a program “WiTricity” in which a project was made. Energy was transferred upto 2m by helical shaped coils. Efficiency of this transmission was 40%.
- 6. For small range For large rang Inductive coupling Resonant coupling Through microwaves Solar power satellite system Various WPT techniques
- 7. Energy is transferred by mutual induction. It’s range is very less. Example: Brush charging pad , transformer etc. Inductive coupling
- 9. RESONANT COUPLING It is combination of resonance & inductive coupling. . In resonant coupling range is few meters. In this coupling circuit is tuned to mutual frequency.
- 10. TRANSMISSION THROUGH MICROWAVE In 1970 microwaves were used for transmission of power. The efficiency was 40-50% It was done from space to ground by Japanes scientists in 1987.
- 11. Block Diagram Microwave generator transmitter receiverload source medium
- 12. Need of solar power satellite system sun sun Sun sunsun SOLAR PLATE
- 13. Solar power satellite system Solar power satellites are used to get solar power more efficiently. SPS are placed at geostationary orbits. Solar power is captured by photocells &a satellite may have 400 million cells. Energy is send to earth via microwaves/ LASER.
- 14. DIFFERENT VIEWS OF SPS
- 15. Rectenna in US Rectenna in US receives 5000MW of power from SPS It is about one and half mile long 7/10/2014 Wireless Power Transmission 15
- 16. Environmental issues It creates interference with the other communication system. This interference can be removed by increasing frequency band. It is not harmful for living entities.
- 17. ADVANTAGES No transmission losses are persant in WPT system which are 30% approx. Saving of wires & towers cost as no lines are required in this system It is estimated that before 2030 all transmission in the world will be wireless
- 18. THANKS TO ALL
- 19. ?