Wireless EV charging station.pptx
- 1. CONTENTS ⯈ Introduction ⯈ What are EVs ? ⯈ Need for EVs. ⯈ Types of charging system for EVs . ⯈ What is wireless charging ? ⯈ Why not wires? ⯈ History. ⯈ Working. ⯈ Construction of roads. ⯈ Advantages & disadvantages. ⯈ Conclusion. ⯈ References.
- 2. INTRODUCTION ⯈ The eco-friendly vehicle is the global trend in the automobile industry. ⯈ The electrical vehicle (EV) is the most suitable alternative of petroleum vehicles. ⯈ The large capacity, weight, expensive price, short life time, and charging time of battery obstruct the commercialization of EV. ⯈ To solve these problems, wireless charging of electric vehicle is introduceded.
- 3. WHAT ARE EVS (ELECTRIC VEHICLES) ? ⯈ An electric vehicle (EV) uses one or more electric motors for propulsion. ⯈ An electric vehicle may be powered through a collector system by electricity from off- vehicle sources, or may be self-contained with a battery or generator to convert fuel to electricity. ⯈ EVs include road and rail vehicles, surface and underwater vessels, electric aircraft and electric spacecraft.
- 4. NEED FOR EVS Global Warming / Climate Change. Rising Prices. Acid Rain. Effect on Human Health. Impact on Aquatic Life by Oil Spills.
- 5. TYPES OF CHARGINGSYSTEMS Conductive Charging ⯈ It utilizes connector between the Electric power source and vehicle battery. ⯈ This type of charging is utilized in Residential areas. Inductive Charging ⯈ Wireless charging coupled with magnetic resonance to transfer power from a transmitting pad to a receiving pad. Battery Switching ⯈ Depleted EV battery pack is switched with a fully charged battery pack in the switching station.
- 6. WHAT IS WIRELESS CHARGING? ⯈ Wireless charging uses an electromagnetic field to transfer energy between two objects through electromagnetic induction. ⯈ Energy is sent through an inductive coupling to an electrical device, which can then use that energy to charge batteries or run the device.
- 7. • Asperstudies, most electrical energytransfer is throughwires. • Most of theenergylossis duringtransmission • Onanaverage, morethan30% • InIndia, it exceeds40%
- 8. HISTORY OF WIRELESS POWER TRANSMISSION • In 1901, Nikola Tesla was able to transfer energy from one coil to another coil wirelessly. • 187 feet tall tower to broadcast energy • He managed to light 200 lamps from a distance of 40km. • Due to shortage of funds, tower did not operate. • The idea of Tesla is taken in to research after 100 years by a team led by Marin Soljačić from MIT. The project is named as ‘WiTricity’.
- 9. HOW IT WORKS: Specifically, the technology works by generating 20kHz frequencies into an electromagnetic field by a power inverter which are embedded. Wireless charging Electric Vehicles are built with an on-board pick up device that allows an electric vehicle to be powered by an underground power transmitter while Parking. This allows the vehicle to carry 4/5 less battery capacity or weight.
- 10. CONSTRUCTION OF A ROAD FOR OLEV ⯈Electric power transmitter coil are installed on pneumatic based surface on the road surface and connected to the power grid.
- 11. ADVANTAGES: ⯈ 80 % reduced operating cost than equivalent gas powered vehicles. ⯈ Lower maintenance costs than gas powered vehicles . ⯈ Pollution free. ⯈ Light weight vehicles. ⯈ A number of EVs can be charged at a time. ⯈ Electrically safe. ⯈ Charging is convenient.
- 12. DISADVANTAGES: ⯈ Initial installation cost is very high. ⯈ Working area is limited. ⯈power outage might cause the EVs to run out of charge. ⯈ ⯈ Complex design. ⯈ Construction of wireless charging road is required
- 13. CONCLUSION: ⯈Charging electric vehicles wirelessly- a reality. ⯈Low maintenance cost but high initial cost. ⯈Better then conventional wired system. ⯈Energy crisis can be decreased. ⯈Low power loss ⯈In the future world will be completely wireless.
- 14. REFERENCES 1. Nicola Tesla, “The transmission of electrical energy without wires”, Electrical World and Engineer, March 1905. http://www.tfcbooks.com/tesla/1904-03-05.htm, (acc. Dec. 08) 2. William C. Brown, “The history of power transmission by radio waves”, Microwave Theory and Techniques, IEEE Transactions, 32(9):1230-1242, September 1984. 3. A.B. Kurs, A. Karalis, R. Moffatt, J.D. Joannopoulos, P.H. Fisher, and M. Soljacic, “Wireless Power Transfer via Strongly Coupled Magnetic Resonances”, Science, 317, pp. 83-86, (2007). 4. A. Karalis, J.D. Joannopoulos, and M. Soljacic, “Efficient Wireless Non-radiative Mid- range Energy Transfer”, Ann. Phys., 323, pp. 34-48, (2008); published online April 2007. 5. J.D. Joannopoulos, A. Karalis, and M. Soljacic, “Wireless Non-Radiative Energy Transfer”, U.S. Patent Numbers 7,741,734; 8,022,576; 8,084,889; and 8,076,800. 6. A. Karalis, A.B. Kurs, R. Moffatt, J.D. Joannopoulos, P.H. Fisher, and M. Soljacic, “Wireless Energy Transfer”, U.S. Patent Numbers 7,825,543 and 8,097,093. 7. A. Karalis, R.E. Hamam, J.D. Joannopoulos, and M. Soljacic, “Wireless Energy Transfer Including Interference Enhancement”, U.S. Patent Number 8,076,801.