logging in or signing up wireless power transmission chaitu471 Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINT lite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 1972 Category: Science & Tech.. License: All Rights Reserved Like it (7) Dislike it (0) Added: October 02, 2010 This Presentation is Public Favorites: 6 Presentation Description No description available. Comments Posting comment... By: ukashniyal (2 days ago) pls i need it urgently, i m a mtech student at iiita Saving..... Post Reply Close Saving..... Edit Comment Close By: ukashniyal (5 days ago) pls send me dis ppt I need is my id is jkashniyal@gmail.com. Saving..... Post Reply Close Saving..... Edit Comment Close By: fourthidiot (4 month(s) ago) i want this ppt. plz send it to wikirs365@gmail.com....plz Saving..... Post Reply Close Saving..... Edit Comment Close By: anu92.anu92 (5 month(s) ago) plz sent this ppt at anu92.anu92@gmail.com, please sir.... Saving..... Post Reply Close Saving..... Edit Comment Close By: farzanesunflower (7 month(s) ago) please send it to f_infinity1388@yahoo.com Saving..... Post Reply Close Saving..... Edit Comment Close loading.... See all Premium member Presentation Transcript Wireless Power Transmission : Wireless Power Transmission Presented by Chaitanya Kumar. G Department of Electronics and Communication Engineering MIC college of technology, kanchikacherla. overview : overview What is wireless power supply(WPT)? Why is WPT? History of WPT Types of WPT techniques to transfer energy wirelessly Advantages and disadvantages Applications Conclusion What is WPT? : What is WPT? The transmission of energy from one place to another without using wires Conventional energy transfer is using wires But, the wireless transmission is made possible by using various technologies. Why not wires? : Why not wires? Currently, wired electricity powers have concurred nearly everything. In present electricity generation system we waste more than half of its resources. Especially the transmission and distribution losses are the main concern of the present power technology. on average, more than 30% In India, it exceeds 40% Why WPT? : Why WPT? Reliable Efficient Fast Low maintenance cost Can be used for short-range or long-range. History : History Nikola Tesla in late 1890s Pioneer of induction techniques His vision for “World Wireless System” 187 feet tall tower to broadcast energy All people can have access to free energy Due to shortage of funds, tower did not operate History (contd…): : History (contd…): Tesla was able to transfer energy from one coil to another He managed to light 200 lamps from a distance of 40km 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’ WPT Basics : : WPT Basics : There are 3 major types of wireless energy transfer: Short range - Inductive Coupling Medium range - Resonant Induction Long range -Electromagnetic Wave Power Transfer How does Inductive Coupling Work? : : How does Inductive Coupling Work? : Inductive coupling works on the principles of electromagnetism: When a current (electricity) passes through a wire, it generates a magnetic field perpendicular to the wire. When a wire is in proximity to a magnetic field, it generates a current in that wire. Magnetic fields decay quickly , making inductive coupling effective only at very short ranges. How does Resonant Induction Work? : : How does Resonant Induction Work? : Resonant induction still uses the same principles as magnetic induction (magnetic fields to transfer current) , but it uses resonance to increase the range at which the transfer can efficiently take place. “Resonance", a phenomenon that causes an object to vibrate when energy of a certain frequency is applied. Far-field energy transfer : : Far-field energy transfer : Far-field energy transfer Radiative Needs line-of-sight LASER or microwave Aims at high power transfer Tesla’s tower was built for this. LASER is highly directional, coherent Not dispersed for very long But, gets attenuated when it propagates through atmosphere Cont…. : Cont…. Everything resonates at a certain frequency, based on its shape and material. Energy transfers easily between resonating objects. An example of this is when an opera singer shatters wine glasses by singing at the frequency at which the glasses resonate. With resonant induction, power is transmitted between two resonating coils. Detailed Principle : : Detailed Principle : Consider two self resonating copper coils of same resonating frequency with a diameter 20 inches each. One copper wire is connected to the power source , while the other copper wire is connected to the device. Mechanism : : Mechanism : Cont.. : Cont.. Example: : Example: MY INPUT TO THE TOPIC : : MY INPUT TO THE TOPIC : Is WiTricity safe? How much power can be transferred? What about the range of transferred? How efficient is WiTricity? What's the Future of WiTricity How Safe is WPT? : : How Safe is WPT? : Human beings or other objects placed between the transmitter and receiver do not hinder the transmission of power. magnetic fields tend to interact very weakly with the biological tissues of the body, and so are not prone to cause any damage to any living beings. Advantages: : : Advantages: : Safe, fairly efficient, good range: Reduce the cost of electrical energy. Transmits the power to any where. Theoretically one stationary coil in a room could power multiple devices with receiving coils. No more messy wires, and with widespread enough use it could even eliminate costly batteries. Limitations : : Limitations : The resonance condition should be satisfied and if any error exists, there is no possibility of power transfer. If there is any possibility of very strong ferromagnetic material presence causes low power transfer due to radiation. What's the Future of WiTricity? : : What's the Future of WiTricity? : MIT's WiTricity is only 40 to 45% efficient and they have to be twice as efficient to compete with the traditional chemical batteries. Aim is to get a robotic vacuum or a laptop working, charging devices placed anywhere in the room. The researchers have said that in another five years time, they will come up with a WiTricity system for commercial use. You do not have the permission to view this presentation. In order to view it, please contact the author of the presentation.
wireless power transmission chaitu471 Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINT lite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 1972 Category: Science & Tech.. License: All Rights Reserved Like it (7) Dislike it (0) Added: October 02, 2010 This Presentation is Public Favorites: 6 Presentation Description No description available. Comments Posting comment... By: ukashniyal (2 days ago) pls i need it urgently, i m a mtech student at iiita Saving..... Post Reply Close Saving..... Edit Comment Close By: ukashniyal (5 days ago) pls send me dis ppt I need is my id is jkashniyal@gmail.com. Saving..... Post Reply Close Saving..... Edit Comment Close By: fourthidiot (4 month(s) ago) i want this ppt. plz send it to wikirs365@gmail.com....plz Saving..... Post Reply Close Saving..... Edit Comment Close By: anu92.anu92 (5 month(s) ago) plz sent this ppt at anu92.anu92@gmail.com, please sir.... Saving..... Post Reply Close Saving..... Edit Comment Close By: farzanesunflower (7 month(s) ago) please send it to f_infinity1388@yahoo.com Saving..... Post Reply Close Saving..... Edit Comment Close loading.... See all Premium member Presentation Transcript Wireless Power Transmission : Wireless Power Transmission Presented by Chaitanya Kumar. G Department of Electronics and Communication Engineering MIC college of technology, kanchikacherla. overview : overview What is wireless power supply(WPT)? Why is WPT? History of WPT Types of WPT techniques to transfer energy wirelessly Advantages and disadvantages Applications Conclusion What is WPT? : What is WPT? The transmission of energy from one place to another without using wires Conventional energy transfer is using wires But, the wireless transmission is made possible by using various technologies. Why not wires? : Why not wires? Currently, wired electricity powers have concurred nearly everything. In present electricity generation system we waste more than half of its resources. Especially the transmission and distribution losses are the main concern of the present power technology. on average, more than 30% In India, it exceeds 40% Why WPT? : Why WPT? Reliable Efficient Fast Low maintenance cost Can be used for short-range or long-range. History : History Nikola Tesla in late 1890s Pioneer of induction techniques His vision for “World Wireless System” 187 feet tall tower to broadcast energy All people can have access to free energy Due to shortage of funds, tower did not operate History (contd…): : History (contd…): Tesla was able to transfer energy from one coil to another He managed to light 200 lamps from a distance of 40km 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’ WPT Basics : : WPT Basics : There are 3 major types of wireless energy transfer: Short range - Inductive Coupling Medium range - Resonant Induction Long range -Electromagnetic Wave Power Transfer How does Inductive Coupling Work? : : How does Inductive Coupling Work? : Inductive coupling works on the principles of electromagnetism: When a current (electricity) passes through a wire, it generates a magnetic field perpendicular to the wire. When a wire is in proximity to a magnetic field, it generates a current in that wire. Magnetic fields decay quickly , making inductive coupling effective only at very short ranges. How does Resonant Induction Work? : : How does Resonant Induction Work? : Resonant induction still uses the same principles as magnetic induction (magnetic fields to transfer current) , but it uses resonance to increase the range at which the transfer can efficiently take place. “Resonance", a phenomenon that causes an object to vibrate when energy of a certain frequency is applied. Far-field energy transfer : : Far-field energy transfer : Far-field energy transfer Radiative Needs line-of-sight LASER or microwave Aims at high power transfer Tesla’s tower was built for this. LASER is highly directional, coherent Not dispersed for very long But, gets attenuated when it propagates through atmosphere Cont…. : Cont…. Everything resonates at a certain frequency, based on its shape and material. Energy transfers easily between resonating objects. An example of this is when an opera singer shatters wine glasses by singing at the frequency at which the glasses resonate. With resonant induction, power is transmitted between two resonating coils. Detailed Principle : : Detailed Principle : Consider two self resonating copper coils of same resonating frequency with a diameter 20 inches each. One copper wire is connected to the power source , while the other copper wire is connected to the device. Mechanism : : Mechanism : Cont.. : Cont.. Example: : Example: MY INPUT TO THE TOPIC : : MY INPUT TO THE TOPIC : Is WiTricity safe? How much power can be transferred? What about the range of transferred? How efficient is WiTricity? What's the Future of WiTricity How Safe is WPT? : : How Safe is WPT? : Human beings or other objects placed between the transmitter and receiver do not hinder the transmission of power. magnetic fields tend to interact very weakly with the biological tissues of the body, and so are not prone to cause any damage to any living beings. Advantages: : : Advantages: : Safe, fairly efficient, good range: Reduce the cost of electrical energy. Transmits the power to any where. Theoretically one stationary coil in a room could power multiple devices with receiving coils. No more messy wires, and with widespread enough use it could even eliminate costly batteries. Limitations : : Limitations : The resonance condition should be satisfied and if any error exists, there is no possibility of power transfer. If there is any possibility of very strong ferromagnetic material presence causes low power transfer due to radiation. What's the Future of WiTricity? : : What's the Future of WiTricity? : MIT's WiTricity is only 40 to 45% efficient and they have to be twice as efficient to compete with the traditional chemical batteries. Aim is to get a robotic vacuum or a laptop working, charging devices placed anywhere in the room. The researchers have said that in another five years time, they will come up with a WiTricity system for commercial use.