Wireless Power Transfer Free Essays

Introduction We can non conceive of modern universe without power and twenty-four hours by twenty-four hours, the use of power is increasing, but utilizing it in the most effectual manner is the biggest concern now. After the radical alteration in engineering site, sometimes the manner of power transportation is a weighty issue. Wireless power transmittal is necessary in instances where fleeting power transportation is needed, because sometimes semisynthetic music directors are non perfect for power transmittal in few sectors. We will write a custom essay sample on Wireless Power Transfer or any similar topic only for you Order Now Wireless Power Transfer ( WPT ) is a transmittal where electrical energy is transmitted from a power beginning to an electrical burden through an air spread with the aid of electromagnetic field. In last few old ages, there is a dramatic advancement in this sector but still it is in child degree. Background and aim Wireless power transmittal is a construct which was proposed by Nicola Tesla in the late 1800s.That clip it may sound futuristic, but Tesla’s did it enormously. No uncertainty research workers have found safer and more effectual methods of wireless power transportation, since Tesla ‘s cardinal check. It is called resonating inductive yoke, the most promising engineering that has been bloomed. The engineering takes advantage of moving ridge harmonics. From two spirals, wave harmonics make a strong nexus of magnetic moving ridges and vibrate it. Although the original initiation spiral was created by Nicholas Callan ( 1799-1864 ) , in 1836 a priest and the professor of natural doctrine, but Nicola Tesla’s spirals created the discovery for Wireless power transmittal. The chief point is why we want to utilize wireless engineering to route information when all the maps can be arranged with wired elements? Extinguishing reckons of overseas telegrams is the lone existent reply. Many medical equipments require a uninterrupted power beginning. If wires may set-up through someone’s organic structure, the hazard of shorting causes a hazard of infection for patients. Cell phones, earphones, game accountants, personal digital helpers ( PDAs ) and Internet contraptions all require a three to four pes single wire to utilize in the auto. Most of these wires are created an uncomfortable environment in the wire. WPT utilizing magnetic: Wireless Power transportation ( WPT ) is divided by two parts, one is near-field and another one is far-field parts. Although Radio Waves and LASER engineering are widely used for far-field part, but these are non excessively much efficient for near-field part. In near-field part, three techniques of wireless power transportation are used. Air ionisation is one of them, but it is a toughest technique and is non executable for practical execution. Other two techniques are really effectual, which are called magnetic inductive yoke and magnetic resonance inductive yoke. Magnetic inductive yoke is the most comprehensive method of wireless power transmittal. Interior designers can acquire some benefits from magnetic initiation instead than the wireless moving ridges. If modulated magnetic field is used to direct a signal through the air allows for a low-priced, low-power communications system. Radio waves communicate by distributing a plane moving ridge in unfastened infinite. On the other manus magnetic system is based on quasi-static magnetic field which is around the transmission spiral. It is based on the rule of change overing and conveying the magnetic flux ( ? ) between two spirals ( primary and secondary spirals ) which are non connected by wires. Transformer, electric coppice, radio bear downing tablets are the illustrations of magnetic initiation. But this method is impractical when it comes to reassigning power to longer distances. For such an experiment, it is needed that the spirals are excessively close to each other so that the short magnetic field is produced. When it is a affair of long distance, a immense magnetic field is needed and spirals should be multiple. Due to the flow of magnetic field in different waies, counter steps should be calculated to salvage the power loss. May be this is theoretically possible but is non possible practically. Magnetic resonance inductive yoke is the procedure which is used for longer distances power transportation. It is a combination of inductive yoke and resonance. Resonance is interacted with two objects really strongly. In this procedure capacitance is connected parallel to the spiral and spiral provides the induction. The resonating capacitances wipe out the divergent induction in the receiving system. Resonance Inductive Coupling ( RIC ) is extremely effectual than inductive yoke ( IC ) and RIC can be transfer power to multiple devices whereas inductive yoke is reassigning power to individual device. Magnetic initiation vs. Radio Waves: Magnetic initiation can keep a scope bound which is around 3 metres. On the other manus, wireless waive is non governable and range bound is minimal 10 metres or more. Related work: When Tesla spiral is invented, the thought of wireless power was unveiled. Now â€Å"WiTricity† is an American technology company, but in 2007 WiTricity was a undertaking of MIT pupils, where research workers were able to successfully light a 60 W visible radiation bulb wirelessly, which was 7ft off. At a glimpse, it is originally extended version of magnetic initiation up to a few metres. The chief difference is resonance ; if the magnetic resonance is same for transmitter and receiving system, energy can expeditiously be transferred and loss of power is really little. Using resonance is about 106 times efficient than without resonance. The frequence of resonation can be measured by the equation given below. Resonant Frequency = Coil Inductance x Capacitance The dramatic accomplishment of the MIT research squad is how to ticket tune the application so that the close field addition distances for a few metres, on the other manus restricting the power radiated through the far field. In 2008, Tesla’s experiment was rebuilt by Intel, which was wirelessly powering a light bulb. And in 2009, Sony exhibited a Television, which was wireless-powered at a scope of 20 inches. Very recent April 17, 2014 was another discovery for Wireless power transportation utilizing magnetic resonance. Chun T. Rim, a professor of Nuclear A ; Quantum Engineering at KAIST and his squad developed a system, which can bear down 40 smart phones at the same time, with a highest end product power of 209 W at 20 kilohertz and power beginning can 5 metres off from receiving system. The name of this system is â€Å" Dipole Coil Resonant System ( DCRS ) † which is an drawn-out version of inductive power transportation. Using this system a big LED Television with 40 W-fans can be powered from maximal 5-meter distance.No uncertainty, that it is a radical accomplishment after WiTricity. Advantages 1. Wireless charging: Now inductive bear downing has promised with our nomadic devices, Electric Vehicle wholly free from cord and it protects our connexions. When electronics are enclosed, there is no opportunity of corrosion. Sometimes embedded medical devices are needed to be charged, but the hazard of infection, wires penetrate through tegument should be avoided. Durability is another benefit of inductive charging. 2. High Efficiency over a Distance: Electricity, which is created by the beginning and is extremely efficient around several metres. 3. Penetrate and Frisk Around the barrier: Power transportation system is really flexible for industrial or commercial environment. Most of the edifices are furnished by wood, glass, plastics, fabrics etc. which are non created any obstructor of transmittal system. In add-on, the system has an ability to frolic around many metallic barriers. 4. Control the scope of power degree: It is possible to accomplish commanding power degree over distance. Wireless mouse and keyboard like electronic devices need milliwatts and when it is a affair of electric rider vehicle, so it gives you kilowatts. 5. Safe for nature: Cause of magnetic near field, this engineering is wholly free from Radiative manner and that’s why it is safe for nature. Biological beings are really decrepit interact with magnetic field. The world-renowned physicist Sir John Pendry of Imperial College London explains: â€Å" The organic structure truly responds strongly to electric Fieldss, which is why you can cook a poulet in a microwave. But it does n’t react to magnetic Fieldss. Equally far as we know the organic structure has about zero response to magnetic Fieldss in footings of the sum of power it absorbs † . Research Aims: Wireless coursers for Electric Vehicles ( EVs ) would be a convenient characteristic, which is given a great solution of avoid to retrieve the stopper in a power overseas telegram after parking the vehicle. Wireless bear downing for Electric Vehicles is a system necessitating high electrical power ( up to 100s of kW ) and broad country of wireless power transmittal which increases electromagnetic field exposure. There are two types of radio bear downing engineerings applicable for EVs. inductive power transportation ( IPT ) system, which is known as Decision: The Wireless Power Transmission was a legendary effort by Nikola Tesla. After 120 old ages, reproduced of Tesla’s experiment agencies, necessity of engineering can ne’er be hidden. Presently the engineering is in advancement and all the twenty-four hours by twenty-four hours research workers are seeking their best and defeated the powerful challenges. Although â€Å"WiTricity† and â€Å" Dipole Coil Resonant System ( DCRS ) † are about new engineerings, but the cardinal rule is magnetic inductive with resonance yoke. However, the most update radio power transmittal system is excessively dearly-won and immature, but the twenty-four hours is non so far when wireless power transportation utilizing magnetic is the most diacritic and sustainable option of current system. Mentions: 1 ) Sun-Hee Kim, Yong-Seok Lim, and Seung-Jun Lee, † Magnetic Resonant Coupling Based Wireless Power Transfer System with In-Band Communication† , JOURNAL OF SEMICONDUCTOR TECHNOLOGY AND SCIENCE, VOL.13, NO.6, DECEMBER, 2013 2 ) S. Sheik Mohammed, K. Ramasamy, T. Shanmuganantham, â€Å"Wireless Power Transmission – A Next Generation Power Transmission System† , 2010 International Journal of Computer Applications ( 0975 – 8887 ) , Volume 1 – No.13 3 ) Chun T. Rim, â€Å"Wireless power transportation achieved at 5-meter distance† hypertext transfer protocol: //www.eurekalert.org/pub_releases/2014-04/tkai-wpt041714.php 4 ) Rajen Biswa, â€Å"Feasibility of Wireless Power Transmission† , May, 2012 5 ) Wireless Power Technology hypertext transfer protocol: //www.wirelesspowerconsortium.com/technology/ 6 ) Liguang Xie, Yi Shi Y, Thomas Hou,Wenjing Lou, † Wireless Power Transfer and Applications to Sensor Networks† , Virginia Polytechnic Institute and State University, USA 7 ) Prof. Jenshan Lin, â€Å"Wireless Power Transmission: From Far-Field to Near-Field† , University of Florida Gainesville, Florida, USA How to cite Wireless Power Transfer, Essay examples Wireless power transfer Free Essays The area of wireless power transmission is very interesting. The technology is in its infancy but the overall benefits from its maturation could be significant to society as a whole. World population is expected to continue to grow exponentially. We will write a custom essay sample on Wireless power transfer or any similar topic only for you Order Now Five sixths of the world’s population lives in developing nations. Most developing nations such as China, India, and Pakistan are rapidly improving their standard of living. All of these trends point to an energy demand that will grow at even a larger rate. Wireless power transmission could one day allow us to generate solar power on a satellite and am it down to Earth, transmit power to a water treatment plant for a disaster relief operation or power a flying communication relay station from a terrestrial station. There are a few engineering hurtles yet to overcome to make this technology viable to today’s investors, but with the rising demand for energy and the rapid improvements being made it is Just a matter of time before wireless power transmission becomes an industry of its own. In the late 19th century, shortly after the introduction of AC power, Nikolas Tests (an inventor, electrical engineer, mechanical engineer, physicist, and futurist best now for his contributions to the design of the modern alternating current (AC) electrical supply system and often called the greatest US electrical engineer during his time) began the development of a system for the global transmission of electrical energy without interconnecting wires. Nikolas Tests devoted much effort to develop a system for transferring large amount of power over considerable distance. His main goal was to bypass the electrical-wire grid, but for a number of financial and technical difficulties, this project was never completed. His invention, however, required large scale construction of 200 Ft tall masts. He developed various methods that can be used for his wireless power transmission and have been given great credits and patents for it. Tests preferred to use the passage of current through the atmosphere and other natural medium. Wireless energy transfer or wireless power transmission (WEPT) is the process that takes place in any system where electrical energy is transmitted from a power source to an electrical load without the use of wire. Wireless transmission is ideal in cases where instantaneous or continuous energy transfer is needed. The potential applications of wireless power transfer include charging of mobile phones and laptops, radio-frequency identification (REID), electrically charged vehicles, biomedical sensors, space solar power satellite (SSP), solar energy to earth, and in spying circuits devices which if contain a power source can have greater probability of detection etc. The various methods of wireless power transfer are Microwave/ Radio wave, Plastic sheet, Inductive coupling, and Lasers. Among these methods of wireless power transfer, using microwave has some advantages over other methods such as its use for longer distances with relatively higher efficiency and more mature technology. Highly efficient, super directive array configuration would have the potential of concentrated and directed microwave beam that can provide higher efficiency for longer distances. Wireless communication using radio frequency (RFC) waves or microwave is a very familiar topic. However, wireless power transmission (WEPT) is yet to be so, though its history dates back to the late nineteenth century. The year 1888 was marked by a demonstration on wireless transmission of pulsed power generated at mezzo. Since then, only a few demonstrations or feasibility studies on WEPT have been published at discrete time intervals. Among these, the most significant is a feasibility study reported by a French research group in 1997 for a terrestrial (ground-to-ground) WEPT project. Its aim was to deliver 10 k power from the grid system, through AC-DC- microwave-DC-AC conversion, to a 0. 7 km distant small tourist spot across a mountain in La Reunion Island, an overseas territory of France. The project is termed ‘Grand- Basin WEPT model’ after the name of the tourist village. It is noteworthy that since 1969 (the year marked by the successful landing of the first manned space craft on the moon surface) until now, the main thrust of WEPT has been on the concept of pace-to-ground (extraterrestrial) transmission of energy using microwave beam. This concept aims towards tapping the round-the-clock available solar energy from outer space in the form of photovoltaic DC power by a low earth orbit satellite. The tapped energy would be converted into a microwave beam for transmission to the designated earth stations where it would be rectified into DC using a device termed ‘Recreant’ (receiving and rectifying antenna). A pilot project based around this concept, named ‘SSP (Solar Power Satellite) 2000’, is still under preliminary investigation by the Japanese Space and Astronomical Science Society. Nevertheless, for a number of reasons the chances of the terrestrial WEPT becoming an affordable reality are brighter than its extraterrestrial counterpart. Apart from the time frame for implementation, huge size of recentness and requirement for energy storage between two passes of the satellite, the other crucial points which bear against the extraterrestrial WEPT are affordability, simplicity, controllability, maintainability, reliability, commercial exportability, and health and safety issues. Industries are investigating the latest wireless power technologies to improve versatility, reduce sots, maintain connectivity, and eliminate the need to replace batteries. More than one industrial and end-use applications are evaluating WEPT. One such end-use application is induction cooking which utilizes WEPT, or a variant of WEPT, due to a range of reasons such as better operation, cost-effectiveness and energy efficiency. Large and continually operating industries such as electric power plants are interested in evaluating WEPT as a power source alternative for sensors and transducers. The portable electronics industry is perhaps the most revolutionary in terms of the rapid progress in the application and centralization of WEPT. A subset of portable devices that utilize wireless data communications such as mobile phones, ‘Pods, and wireless computer peripherals, find WEPT particularly appealing. WEPT is seen as a natural complement to wireless data communications, completing the promising of a truly wireless device. The wireless power charger market is becoming competitive, with several companies developing commercial devices and retrofit gadgets for powering portable electronics. The surge in the growth of mobile electronics in the past decade has greatly enhanced the market potential for wireless rower chargers. Due to the relatively low cost and high efficiency of power line transmission, wireless power transmission is only practical under two general circumstances: 1) In order to transport necessary power over an impossible or impractical barrier for wires or 2) Rapid deployment of assets for disaster recovery or military operations that could be aided by wireless power transmission more than by local generators. How to cite Wireless power transfer, Papers