Wireless power transfer by means of electromagnetic. Wireless power transfer wpt has been made feasible in recent years due to advances in technology and better the mpt system works by converting power to microwaves through a microwave generator and then transmitting that power through free space where it is received and converted back to power. The transfer of power from source to receiver is a technology that has existed for over a century. Electromagnetic radiation within an enclosed space robert a. Shinohara, n wireless power transfer via radiowaves. You might have already come across this technology and might have gone through many related theories on the internet although the internet may be full of such articles explaining the concept with examples and videos, the reader mostly fails to understand the. Wireless power transfer in 3d space semantic scholar. In contrast to the more conventional inductive power transfer scheme, our approach here is closely associated with a resonant power transfer scheme. Power transfer for space applications experiments and for providing me with the stateoftheart tools to complete my research. Minnaert, b thoen, b plets, d joseph, w stevens, n. Innovation the magneticsassembly intended for power transfer has been.
Threedimensional wireless power transfer method to realize. In the 1980s, canadas communications research centre created a. One of the most rapidly spreading technologies involves wireless power transfer also called noncontact feeder, noncontact power transmission systems, capable of charging a built in rechargeable battery of an electronic device. Introduction to wireless power transfer technical articles. The future aguboshim, emmanuel chukwujioke postgraduate student, nnamdi azikiwe university, awka, anambra state, nigeria. Wireless power transfer by incorporation of solar energy. Wireless power transfer in 3d space power electronics projects edgefx kits. Wireless power transfer techniques have been gaining researchers and industry attention due to the increasing number of batterypowered devices, such as mobile computers, mobile phones, smart devices, intelligent sensors, mainly as a way to replace the standard cable charging, but also for powering batteryless equipment.
Top wireless power transfer companies ventureradar. Launched in 2014, wireless power transfer is the first journal dedicated to publishing original research and industrial developments relating to wireless power. In a wireless power transmission system, a transmitter device, driven by electric power from a power source, generates a timevarying electromagnetic field, which transmits power across space. Longdistance wireless power whether or not it incorporates resonance, induction generally sends power over relatively short distances.
Wireless power transfer wpt, wireless power transmission, wireless energy transmission wet, or electromagnetic power transfer is the transmission of electrical energy without wires as a physical link. The technologies, listed in the table below, differ in the distance over which they can transfer power efficiently, whether the transmitter must be aimed directed at the receiver, and in the type of electromagnetic energy they use. The parameters measured were the efficiency of the power transfer, and the angle between emitter and receiver. Wireless power transmission circuit and its working. An omnidirectional resonator for wireless power transfer.
The project was done at nextfloor oy, a company based in helsinki, finland. Request permission export citation add to favorites track citation. Chapter 2 analysis of wireless power transfer by coupled mode theory cmt and practical considerations to increase power transfer efficiency 19 alexey bodrov and seungki sul chapter 3 magnetically coupled resonance wireless power transfer mrwpt with multiple selfresonators 51 youngjin park, jinwook kim and kwanho kim. Wireless power transfer via strongly coupled magnetic. Wireless power transfer using resonant inductive coupling for. The storage capacity of batteries is an extremely important element of. Ahmed3 1 comsats institute of information technology, islamabad, pakistan 2 university of alberta, alberta. But some plans for wireless power involve moving electricity over a span of miles. Inductive power transfer technology a typical ipt system as shown in figure1 consists of two physically detached subsystems with power transfer through induction. Textroad publication issn 20904304 journal of basic and applied scientific research. Wireless power transfer devices are either interferencecausing equipment or licenceexempt radio apparatus that operate on a nointerference, noprotection basis. This concept based on low frequency to high frequency conversion.
Wireless power transfer by incorporation of solar energy anand. Formulas are derived for the e ciency of the power transfer in free space, in the presence of re. A wpt device, in addition to the wireless power transfer subassembly, may also include specific. Wpt where electromagnetic interference is undesirable, or a long distance needs to be bridged over a freespace link, with limited space available for a transducer. For high power, most critical power conversion efficiency is the coiltocoil efficiency that is defined by ideally. A comparative study of wireless power transmission techniques a. In this paper, wireless power transfer by means of electromagnetic radiation is investigated. We can achieve wireless power transfer up to lowatts in 3d space using high frequency through tuned circuit. The phenomenon incorporated in here is to transfer power using a renewable. Nov 14, 20 the main objective of this project is to develop a system of wireless power transfer in 3d space. The ac 50 hz is rectified by br1and the dc derived from that is again made to ac by an inverter by transistors switching near 40 khz which is fed to another high frequency transformer the output of which is then fed to a. Wireless power transfer fundamentals and technologies. The goal of the project was to develop a wireless power transfer wpt system and implement it in innovative flooring.
Wireless power transfer massachusetts institute of. Overview on wireless power transfer for electrical devices. Wireless power transfer in 3d space video dailymotion. Systems and standards of wireless power transfer products. Efficient midrange power transfer occurs in particular regions of the parameter space describing resonant objects strongly coupled to one another. We can achieve wireless power transfer up to 10watts in 3d space using high frequency through tuned circuit. A few proposals even involve sending power to the earth from space. 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. Wireless power transfer wpt technique is able to provide energy in a. The main intention of this project is to design a wpt system in 3d space transfer power within a small range and the block diagram of this project is shown below. How wireless power transfer works homemade circuit projects.
Space based solar power on a commercially viable scale will be an enormous undertaking. The actuator is controlled by a touchpad or mobile phone app. Wireless power transfer using resonant inductive coupling. This technology is being incorporated into all kinds of devices and systems. In particular, we introduced a selector between the transmitter coil and the power source shown in figure 2, and made it possible to select the connection path among the transmitter coils and the power source. Optimization of nearfield wireless power transfer using evolutionary strategies thijs willem versloot 1, duncan james barker, xurxo otero one, 1advanced concepts team, european space agency, noordwijk, the netherlands abstractthe parameter space for power transfer by near. This concept based on low frequency to high frequency. Threedimensional wireless power transfer method to. Jul 30, 2015 the main objective of this project is to develop a device for wireless power transfer. Journal papers in megahertz wireless power transfer supervised students are delineated with an asterisk.
Hfss simulation results are shown to verify the theoretical results. Maxwells equations even if the dimension decreases from 3d to 2d. Florida institute of technology, 2008 a dissertation submitted in partial fulfillment of the requirements for the degree of doctor of philosophy. Similar to inductive power transfer scheme, resonant power transfer occurs through magnetic field coupling. The wpt system has the maximum power transfer efficiencies of 93% for two devices and simultaneously. It could also be used to provide power in disaster. Bibliography wireless power transfer via radiowaves wiley. Introduction 3d integration is a promising solution for shortening.
Japan demoes wireless power transmission for spacebased. In some instances, this technology is also referred to as. Wireless power transfer could be a valuable technology from the environmental impact and associated carbon cost standpoint. In this article, we explain the 3d wireless power trans fer system that we developed. For an output of 1 gigawatt, japan is planning on deploying a solar collector weighing over 10,000 metric. Evaluations for high power applications of wireless power transfer omer c.
M1, yogesh kannan2 1,2ug student abstract this paper elucidates the transfer of electrical energy from one place to another, wirelessly avoiding quotidian methods of power transfer. In this way, one can design a wireless power transfer system for simple electronic gadgets like mobile phones chargers which not only reduces the risk of shock, but also the efforts to. Mar 16, 2014 3162014wireless power transmission 18 comparison with other technologies. As per the 94 trade association technical brief, conventional external power supplies, chargers, and many other wall connected electronic devices use linear power supplies which are only about 30%40%. Schallhorn nasalsps environments and launch approval branch chief, my current supervisor, dr. This project is formed out of an ac 230v 50hz to ac 20 khz at 12v. Wireless power transmission of solar energy from space news. A compact spatial freepositioning wireless charging. The overall endtoend system efficiency should exceed 80%. This project is formed out of an ac 230v 50hz to ac 20 khz at 12v circuit. Oct 28, 2016 introduction to wireless power transfer october 28, 2016 by marie christiano wireless power transfer holds the promise of freeing us from the tyranny of power cords.
Coils for the power link are designed using a chartered 0. Energous corporation is the developer of wattupan awardwinning, wirefree charging technology that will transform the way consumers and industries charge and power electronic devices at home, in the office, in the car and beyond. In last few years, our society experienced a silent, but quite dramatic, revolution in terms of the number of autonomous electronic devices e. A wireless power transfer in the 3d space is also possible by increasing the number of turns in the coils, by using high gauge coils and high rated capacitors. In conventional transformers, for inductive transfer efficiency around 80% at short range in witricity tightly coupled conventional transformers has efficiency around 9095%. Spacebased solar power on a commercially viable scale will be an enormous undertaking. The concept of wireless power transfer was realized by nikolas tesla. This technology can be used to energize and read sensors or actuators over large distances without cables. The wireless power supply is motivated by simple and comfortable use of many small electric appliances with low power input. Wireless power transfer by means of electromagnetic radiation. The main objective of this project is to develop a device for wireless power transfer.
The mit team demonstrated the highly resonant technique using a magnetic field to transfer energy over a midrange distance of 2 meters, and an industry was born. Inductive power transfer ipt powering our future grant covic professors grant covic and john boys power electronics research group department of electrical and computer engineering the university of auckland, new zealand. Metamaterials and array of coupled resonators bingnan wang, member, ieee, william yerazunis, senior member, ieee, and koon hoo teo, member, ieee abstractin this article, we will report some recent progress on wireless power transfer wpt based on resonant coupling. Wireless power transfer in 3d space power electronics. Magnetically coupled resonance wireless power transfer. Wireless power transfer project linkedin slideshare. Please note that the contents may change without any prior notice due to reasons such as upgrading. The block diagram of the wireless power transfer mainly builds with hf transformer, capacitors, diode, rectifier, inductor coil. Introduction 0 the main objective of this project is to develop a system of wireless power transfer in 3d space. The simulation of the project has been done using ni multisim 14.
Introduction high power moving objects can be supplied economically if appropriate wireless power transfer wpt sources exist. Could 3d printing be used to provide wireless power in space. The purpose is to design the desired circuit in order to transfer power wirelessly. Safe, efficient, and over distance background the idea of transmitting power through the air has been around for over a century, with nikola teslas pioneering ideas and experiments perhaps being the most wellknown early attempts to do so 1. In this post we discuss regarding how wireless power transfer works or the transfer of electricity through air without using wires. May 01, 2014 a wireless power transfer in the 3d space is also possible by increasing the number of turns in the coils, by using high gauge coils and high rated capacitors. Wireless power transfer in 3d space internet archive. Experiment results shows successful wireless power transfer for all the cases studied. Wireless power transfer wpt technology enables users to charge electronics without the. The solar arrays attached to a typical satellite generating 1.
The block diagram of the wireless power transfer mainly builds with hf transformer, capacitors, diode, rectifier, inductor coil filled with air and lamp. Electrical projects like wireless power transfer in 3d space is used to transfer the electracity fron one source to. The wireless wteng could be used in outer space, in the middle of the ocean, or even in military situations, where power supply may be scarce. Wireless power transfer in 3d space by ijtel issuu. In this way, one can design a wirelesspowertransfer system for simple electronic gadgets like mobile phones chargers which not only reduces the risk of shock, but also the efforts to. The peak power transfer efficiency is 52% and power transfer density is 49mwmm2. In addition, where batteries need periodic maintenance and replacement, resonant energy. May 07, 2014 the main objective of this project is to develop a system of wireless power transfer in 3d space. Optimization of nearfield wireless power transfer using. Technology requirements for high power applications of.
A maglev system, with a linear synchronous motor, for instance, requires primary windings distributed along the track, resulting in substantial increase in the. Wireless power transfer is a generic term for a number of different technologies for transmitting energy by means of electromagnetic fields. Microwave power transfer wireless power transfer is usually implemented in practice based on one of the three different technologies, namely inductive coupling 4, magnetic resonance coupling 5, and mpt 6 corresponding to short range tens of centimeters, mid range several meters, and long range up to tens of kilometers, respectively. The main objective of this project is to develop a system of wireless power transfer in 3d space.
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