Synopsis on wireless power transfer
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This document discusses wireless power transmission. It describes how the concept was realized by Nikola Tesla and can eliminate the need for copper cables. The project aims to wirelessly transfer power over short ranges, such as charging pacemaker batteries implanted in the body. It uses an electronic circuit to convert AC to high frequency AC and transfer power from a primary coil to a secondary coil separated by a few centimeters through resonance. Potential applications include wirelessly charging phones, laptops, and other devices.
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PROJECT DESCRIPTION
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The main objective of this project is to develop a device for wireless power transfer. The concept of wireless power transfer was realized by Nikolas tesla. Wireless power transfer can make a remarkable change in the field of the electrical engineering which eliminates the use conventional copper cables and current carrying wires.
Based on this concept, the project is developed to transfer power within a small range. This project can be used for charging batteries those are physically not possible to be connected electrically such as pace makers (An electronic device that works in place of a defective heart valve) implanted in the body that runs on a battery.
The patient is required to be operated every year to replace the battery. This project is designed to charge a rechargeable battery wirelessly for the purpose. Since charging of the battery is not possible to be demonstrated, we are providing a DC fan that runs through wireless power.
This project is built upon using an electronic circuit which converts AC 230V 50Hz to AC 12V, High frequency. The output is fed to a tuned coil forming as primary of an air core transformer. The secondary coil develops a voltage of HF 12volt.
Thus the transfer of power is done by the primary(transmitter) to the secondary that is separated with a considerable distance(say 3cm). Therefore the transfer could be seen as the primary transmits and the secondary receives the power to run load.
Moreover this technique can be used in number of applications, like to charge a mobile phone, iPod, laptop battery, propeller clock wirelessly. And also this kind of charging provides a far lower risk of electrical shock as it would be galvanically isolated.
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SYNOPSIS WIRELESS POWER TRANSFER
Devendra bhardwaj
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Wireless power transfer
Wireless power transfer involves transmitting electrical energy from a power source to an electrical load without interconnecting wires. It was pioneered in the late 19th century by Nikola Tesla through experiments with electromagnetic induction and wireless energy transmission. The presentation discusses the principles of electromagnetic induction, lasers, and microwave transmission for wireless power, as well as applications like wireless charging and future markets. It concludes that space-based solar power has advantages over terrestrial solar in providing a renewable and maintenance-free energy source.
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Wireless power transfer involves transmitting electrical energy without wires by generating an electromagnetic field from a transmitter to a receiver. It can eliminate wires and batteries, increasing mobility. Wireless power is useful for powering devices where wires are inconvenient, hazardous, or impossible. Common techniques include inductive coupling using coils, resonant inductive coupling for greater efficiency and range, and far-field methods like microwave transmission over longer distances but requiring line of sight.
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The document discusses wireless power transfer through inductive coupling. It provides block diagrams and descriptions of the transmitter and receiver circuits, which use a high frequency transformer, rectifier, and filter capacitors. The principle of mutual induction is used to transfer power across an air gap from the transmission coil to the receiving coil. Advantages are listed as low cost, compact size, and not requiring physical connections. Applications mentioned include charging mobile phones and powering medical devices wirelessly. Limitations include lower efficiency over long distances.
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The document discusses wireless power transmission (WPT), including its history, types, techniques, advantages, disadvantages and applications. It describes how WPT works by transferring energy wirelessly using technologies like inductive coupling, resonant inductive coupling, air ionization, microwave power transmission and laser power transmission. The document notes that while WPT provides benefits over wired transmission like efficiency and low maintenance, it also faces challenges including distance constraints and initial cost.
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This document summarizes wireless power transfer technology. It discusses how wireless power transfer works using inductive coupling between a transmitting and receiving coil without physical connections. The technology has applications for charging phones, bulbs, and other devices wirelessly. Advantages include reduced power losses, safety, and freedom of movement between devices and chargers. The document outlines the components of a wireless power transfer system and discusses applications and the future potential of the technology to supply power wirelessly everywhere.
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This document proposes a system to wirelessly charge electric vehicles using solar energy. It involves using a solar panel to charge a battery bank, which provides power to an inverter and high-frequency transmitter coil. A receiving coil in the electric vehicle captures the power through inductive coupling and a rectifier converts it to DC to charge the vehicle battery. Testing showed over 35% efficiency up to 2 cm distance. The system aims to allow electric vehicles to charge continuously while in motion and expand use of electric vehicles to remote areas without transmission lines by using renewable solar energy.
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Hi there,
Many of us forgot to charge their mobile phones and if there any powercut we can't charge the mobiles right ! . These problem is solved here... For more details download this ppt Now.
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This document discusses wireless recharging/transmission technology. It begins with an introduction to the concept of wirelessly transmitting electricity without physical connection. It then provides a brief history of wireless transmission technology and discusses current techniques like inductive charging, evanescent wave coupling, and capacitive induction. The document also discusses far field electricity transmission using radio/microwave waves or lasers. Currently, induction-based wireless chargers have achieved 80-90% efficiency and are commercially available, while evanescent wave coupling research continues. Far field transmission is still inefficient and not economically viable.
Wireless recharging
This document discusses wireless recharging/transmission technology. It begins with an introduction to the concept of wirelessly transmitting electricity without physical connection. It then provides a brief history of wireless transmission technology and discusses current techniques like inductive charging, evanescent wave coupling, and capacitive induction. The document also discusses far field electricity transmission using radio/microwave waves or lasers. Currently, induction-based wireless chargers have achieved 80-90% efficiency and are commercially available, while evanescent wave coupling research continues. Far field transmission is still not economically viable due to low efficiency.
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THESE PAPER IS BASED ON WIRELESS CHARGING OF ELECTRIC VEHICLE AND IN FUTURE I HOPE WE WILL INVENT THIS TECHNOLOGY IN INDIA
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Wireless power transmission technology is not a new technology. In 1980, it was demonstrated by Nikola Telsa. ... The name wireless power transmission states the transfer of electrical power from a source to an electrical device without the help of wires. Basically, it involves two coils: a transmitter and a receiver coil.
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This document discusses wireless power transmission (WPT) and its history, methods, applications and challenges. It begins with an introduction to WPT and its advantages over wired power transmission. It then discusses Nikola Tesla's early work on wireless power in 1893 and subsequent research at MIT. The document outlines different WPT methods like inductive coupling and resonant induction coupling which transfer power through electromagnetic induction between coils. It also describes microwave power transmission which can transfer power over longer distances. The document discusses applications of WPT in electric vehicles, consumer devices and remote areas. It concludes that WPT could play a significant role in the future by reducing power losses during transmission.
Wireless power transmission via resonance coupling.
this slides give you idea about the recent research on Wireless power transmission.
compiled by Muhammad Xubair (BS-Electronic engg) at BUITEMS Quetta Pakistan.
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This document summarizes wireless power transmission using inductive coupling for different applications. It discusses how an alternating current in a transmitter coil generates a magnetic field which induces a voltage in a receiver coil. This induced voltage can be used to power mobile devices or charge batteries wirelessly. The document then reviews inductive coupling technology and compares various wireless power transfer methods. It presents practical results of a wireless mobile phone charger, LED lighting, and a DC fan operating without wires by using inductive coupling to transmit power. The document concludes that wireless power transmission through inductive coupling is an efficient means of transferring power without wires and has many potential applications.
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This document discusses inductive charging, which involves wirelessly charging objects through electromagnetic induction without direct contact. It works over short distances to charge devices like phones and laptops. The process involves a changing magnetic field generating a current in the receiving conductor. Advantages include eliminating power cables and never having low battery devices. Disadvantages are lower efficiency and increased heat compared to wired charging. The conclusion is that wireless power transmission is now a reality and efficiency has increased from Tesla's initial 20% to over 80% today.
Wireless power transmission
This document discusses wireless power transmission (WPT) technologies. It begins with an introduction of WPT as transmitting energy without wires and the motivation to reduce energy losses during transmission. The document then covers the history of WPT dating back to Nikola Tesla's experiments in the late 1890s. It describes various WPT techniques including inductive coupling, resonant inductive coupling, microwave power transmission, and laser power transmission. Applications of WPT and its advantages and disadvantages are also summarized.
PAPER PRESENTATION
This document proposes a system for wirelessly charging mobile phones using microwaves. It describes a transmitter that would send microwaves along with voice signals using a slotted waveguide antenna. Mobile phones would be equipped with a rectenna to convert the received microwaves into direct current to charge the battery. The more a phone is used for calls, the more it would charge. Key components discussed include the magnetron transmitter, slotted waveguide antenna, Schottky diode-based rectenna, and sensor circuitry to detect incoming calls. Advantages are listed as eliminating separate chargers and allowing charging anywhere, while disadvantages include slower charging and potential health effects of radiation.
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The document is a seminar report on wireless charging submitted by Mohammad Affan to M.J.P Rohilkhand University in partial fulfillment of a Bachelor's degree in Computer Applications. It discusses three main types of wireless charging - inductive charging, radio charging, and resonance charging. Inductive charging uses electromagnetic induction to transfer energy through induction coils, while radio charging is used for small, low-power devices and resonance charging is used for high-power devices that require large amounts of energy.
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The document is a project report on wireless power transfer submitted by a group of 5 students for their Bachelor of Engineering degree. It describes the design, modelling, prototyping and testing of a circuit to demonstrate wireless power transfer through inductive coupling between transmitter and receiver coils. The report includes chapters on the working principle, circuit design and analysis using software, engineering economics, comparison with other wireless power transfer methods and conclusions.
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This document discusses wireless power transmission using microwaves as an alternative to wired power transmission. It describes how microwaves can be used to transmit power over long distances without wires, using a transmitting antenna to broadcast the power and a receiving rectenna to convert it back to electricity. The key components of wireless power transmission systems using microwaves are described, including microwave generators, transmitting antennas, and rectennas. Applications like powering homes and electric vehicles are discussed. Advantages include reduced transmission losses and costs, while concerns relate to efficiency and potential health effects of microwave exposure.
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Synopsis on wireless power transfer
- 1. OVERVIEW ABSTRACT BLOCK DIAGRAM WHAT IS WIRELESS POWER TRANSMISSION? WHY WIRELESS POWER TRANSMISSION? ADVANTAGES DISADVANTAGES APPLICATIONS CONCLUSION
- 2. ABSTRACT The main objective of this project is to develop a device for wireless power transfer. The concept of wireless power transfer was realized by Nikolas tesla. Wireless power transfer can make a remarkable change in the field of the electrical engineering which eliminates the use conventional copper cables and current carrying wires. Based on this concept, the project is developed to transfer power within a small range. This project can be used for charging batteries those are physically not possible to be connected electrically such as pace makers (An electronic device that works in place of a defective heart valve) implanted in the body that runs on a battery. The patient is required to be operated every year to replace the battery. This project is designed to charge a rechargeable battery wirelessly for the purpose. Since charging of the battery is not possible to be demonstrated, we are providing a DC fan that runs through wireless power. This project is built upon using an electronic circuit which converts AC 230V 50Hz to AC 12V,
- 3. High frequency. The output is fed to a tuned coil forming as primary of an air core transformer. The secondary coil develops a voltage of HF 12volt. Thus the transfer of power is done by the primary (transmitter) to the secondary that is separated with a considerable distance (say 3cm). Therefore the transfer could be seen as the primary transmits and the secondary receives the power to run load. Moreover this technique can be used in number of applications, like to charge a mobile phone, iPod, laptop battery, propeller clock wirelessly. And also this kind of charging provides a far lower risk of electrical shock as it would be galvanically isolated. This concept is an Emerging Technology, and in future the distance of power transfer can be enhanced as the research across the world is still going on.
- 4. BLOCK DIAGRAM HARDWARE REQUIREMENTS: HF-Transformer, HF-diodes, rectifier, Transistors, Two air filled inductor coils, Voltage regulator, BLDC fan
- 5. WHAT IS WIRELESS POWER TRANSMISSION The transmission of energy from one place to another without using wires Conventional energy transfer is using wires The power can be transmitted using electromagnetic waves like microwaves, radio waves or lasers. WHY NOT WIRES 40% as per studies, most electrical energy transfer is through wires. Most of the energy loss is during transmission o On an average, more than 30% o In India, it exceeds
- 6. WHY WIRELESS POWER TRANSMISSION Reliable Efficient Fast Low maintenance cost Can be used for short-range or long-range AN EXAMPLE -
- 7. ADVANTAGES No wires No e-waste Need for batteryis eliminated Efficient energy transfer using Resonance Inductive Coupling(RIC) Harmless, if field strengths undersafety levels Maintenancecost is less
- 8. DISADVANTAGES Distance constraint Field strengths have to be undersafety levels Initial cost is high In RIC, tuning is difficult High frequency signals must be the supply Air ionization techniqueis not feasible
- 9. APPLICATIONS Contactless smart card High voltage (one million volt) sources for X-ray production Tesla coils Some Passports Recharging mobiles or computers, tooth brush etc.
- 10. CONCLUSION Transmission without wires- a reality Efficient Low maintenancecost. But, high initial cost Better than conventional wired transfer Energy crisis can be decreased Low loss In near future, world will be completely wireless