Number of household points receives electricity at the same frequency using. Analysis of dead zone in wireless power transfer via. Levitation system with wireless power transmission using magnetic resonance prof. Using copper coils, power can be transmitted several feet in all directions efficiently.
It is reliable, efficient, fast, low maintenance cost, and it can be used for short range or long range. An overview of resonant circuits for wireless power transfer. The transfer of power from source to receiver is a technology that has existed for over a century. Wireless power transmission using resonance inductive.
Wireless power can be defined as the transmission of electrical energy from a power source to an electrical load without connecting wires. Design of wireless power transfer system via magnetic resonant coupling at. They use the magnetic resonance coupling scheme to transfer power over a relatively large distance. Pdf design and construction of wireless power transfer system. Unlike semiconductor devices, the efficiency of these resonators is not affected by the power level as long as the. Systems with a low coupling factor generally use a resonant receiver and resonant transmitter to improve power transfer efficiency. The measured results are verified by electromagnetic simulations. Wireless energy transfer, resonant inductive coupling, induction, resonantcircuits,ferrite. Paper open access investigation into wireless power transfer. Lee 3 1 department of electrical and electronic engineering, the university of hong kong, hong kong, china.
Paper open access investigation into wireless power. Shanmuganantham, wireless power transmission a next generation power transmission system, international journal of computer applications 0975 8887 volume 1 no. The basics of wireless power transmission include the inductive energy that can be transmitted from a transmitter coil to a receiver coil through an oscillating magnetic field. Impedance of transmitterreceiver in freespace obtained by feko. Wireless power transmission via magnetic resonant coupling. During the course of this research, we investigated the need and usefulness of wireless power transmission and the feasibility of using magnetic inductive. In this paper i have investigated the need and usefulness of wireless power transmission and the feasibility of using magnetic inductive coupling as the means of wireless power transmission. The main function of wireless power transfer is to allow electrical devices to be continuously charged and lose the.
Wireless power transmission resonance links, either conventional or the proposed one, can be abstracted as linear twoport networks. The prototype model for the transmission of power by magnetic resonance. This paper will outline the design process and will also tell about results that. The theory was proved by placing a curved wire coil as an inductor along with a capacitance plate at each end of the coil.
Transmission of wireless power by magnetic resonance. The main function of wireless power transfer is to allow electrical devices to be. Radio spectrum wikipedia, the free encyclopedia, online. In fact it dates back to the 19th century, when nikola tesla used conduction based systems instead of resonance magnetic fields to transfer wireless power.
Bozenakaminska, midrange wireless energy transfer using inductive resonance for wireless sensors chunbo zhu, kai liu, chunlai yu, rui ma, hexiao cheng, simulation and experimental analysis on wireless energy transfer based on magnetic resonances, ieee vehicle power and propulsion conference. Nov 17, 20 tesla has proposed methods of transmission of electricity using electromagnetic induction. Data transmission such as with passive rfid tags for example in a passport and. Wireless power transfer, magnetic resonant coupling, quality factor is. Use of mrc wpt is advantageous with respect to its high safety and long transmission distance. The technology for wireless power transmission or wireless power transfer wpt is in the forefront of electronic development. Pdf the study demonstrates efficient wireless power transfer between two resonators. Wireless power transfer is a generic term for a number of different technologies for transmitting energy by means of electromagnetic fields. Wireless power transfer system using the magnetic resonance for flexibility in alignment, proximity, orientation and size between the two coils. Researching a positionfree and distanceinsensitive mcrwpt system using arrayed transmitting resonators. Tesla wireless power transmission, part 2 duration. Ur rehman and zuhairi baharudin and perumal nallagownden and badar ul islam, year2017. To increase the usage of electric vehicles ev, a safe and convenient method to charge the vehicles is essential.
Modelling and efficiencyanalysis of wireless power transfer. In addition, previous research papers in this area are briefly surveyed. The project was researched by former cornell students lucas jorgensen and adam culberson in the year 2008 2. In steady state analysis, which applies to the conventional inductive power transmission links, f s t in is a sinusoidal signal described as a s e. Wireless power transmission working,application,types,long. Wireless power transmission circuit and its working. Studies show that the resonance frequency of the antennas changes as the gap between. This technology is also applicable for producing electricity with the help of solar cells. Wireless power transmission system using magnetic resonant. Levitation system with wireless power transmission using. There are many promising,applications for the ability to transport powerover,great distances and. The resonance of an inductively coupled system increases the amount of magnetic flux linked between coils and improves the power transmission significantly 5. Wireless transmission is used in cases where using connecting wires are inconvenient or hazardous. Wireless power transmission market global industry.
Radiative transfer, used in wireless communication, is not particularly suitable for power transmission due to its low efficiency and radiative loss due to its omnidirectional nature. Abstract wireless power,transmission,is an underdeveloped,field of study. Applications involving microwaves, solar cells, lasers, and resonance of electromagnetic waves have had the most recent success with wpt. Apr 25, 2018 wireless power transmission is also applicable for automotive area i. However, the magnetic resonant coupling and inductive coupling methods are suitable. Oct 30, 2016 levitation system with wireless power transmission using magnetic resonance prof.
Wireless power transmission using resonance inductive coupling. Achieves wireless power transfer to mobile objects with. Since 2007, magnetic resonance coupling techniques have been actively applied to electric vehicles and mobile phones 812. Pdf wireless power transmission using magnetic resonance.
Analysis of dead zone in wireless power transfer via magnetic. In, tesla achieved a great progress by designing a resonance. Wireless power transfer via magnetic resonant coupling is widely researched for various applications especially for charging electric vehicles. This is where the resonance comes in and helps the efficiency dramatically by. Mar 22, 2018 wireless power can be defined as the transmission of electrical energy from a power source to an electrical load without connecting wires. Modelling and efficiencyanalysis of wireless power. Wireless power transmission according to the researchers, when the magnetic fields have the same resonation around the coils, the current will be induced in a different manner. Achieves wireless power transfer to mobile objects with high.
Nowadays electricity is considered as one of the basic needs of human beings. Both teslas design and the later microwave power were forms of radiative power transfer. Magnetic resonant coupling based wireless power transfer. Wireless power transmission into metallic tube using axial. Wpt removes the risks of electric shock and fire incident that can be caused in power cords 3. Wireless power transmission to an electromechanical. According to the changing process of input impedance and input current to describe the demarcate of resonant frequency. Miniaturization and high efficiency have been achieved using stateoftheart magnetic dielectric materials technologies. Index termsmagnetic resonance, power transmission, repeaters, wireless communication.
William holderbaum for his camaraderie and devotion to. Recently, an efficient mid range wireless power transfer that uses magnetic resonant coupling, witricity, was proposed, and has received much attention due to its practical range and efficiency. Most approaches to wireless power transfer use an electromagnetic em. Tesla has proposed methods of transmission of electricity using electromagnetic induction. Wireless power supplies using magnetic resonance may 2010, by john messina magnetic induction is the concept used in wireless power supplies. Areas where the field pushes in the medium and falloff. Abstract wireless power, transmission,is an underdeveloped,field of study. In this condition, the alternating field amplitude in the primary inductor is constant, a 2 t a 2 e. Opportunities and challenges for nearfield wireless power transfer. A survey on magnetic resonant coupling wireless power transfer. By using wpt, power can be transmitted using inductive coupling for short range, resonant induction for mid.
Pdf this chapter provides a general overview of magnetic resonant wireless power transfer systems based on network models. 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. Wireless power transmission or transfer wpt technology is considered as one of game changing technologies. Global wireless power transmission market, by technology nearfield technology inductive, magnetic resonance, capacitive couplingconductive, farfield technology microwaverf, laserinfrared, implementation integrated, aftermarket, receiver application smartphones, tablets, wearable electronics, transmitter application electric vehicle charging, furniture, industrial, geography. May, 2010 until now domestic manufacturers and research institutions have only been focused on the concept that magnetic resonance could be used for wireless power supplies.
Pdf transmission of wireless power by magnetic resonance. The formalism of wireless power transmission is discussed coupled mode theory can be used to describe the resonance process. Wireless power transfer lane is constructed by embedding the coils beneath the road to provide charging coverage to certain distance. Wireless power transmission using magnetic resonance by. Wireless power transfer circuit working, advantages and. In this work, we propose a wireless communication and wireless power transceiver system based on magnetic resonant coupling. The energy can be transferred via magnetic resonant circuit using nonradiative near field. In this paper, the fundamentals of wireless power transfer are covered along with the relevant standards. By using wpt, power can be electromagnetic induction method has short range. Wireless power transfer using resonant inductive coupling. Wireless power transmission technology using magnetic resonance coupling, offering wireless midrange power transmission, was originally proposed by a research group led by marin soljacic from mit in 2007. Wireless power transmission enhancement using magnetic resonance coupling abstract.
Mar 01, 2014 wireless power transmission resonance links, either conventional or the proposed one, can be abstracted as linear twoport networks. The conventional power transmission system uses transmission lines to carry the power from one place to another, but it is costlier in terms of cable costs and also there exists a certain transmission loss. Integrated resonant capacitors for matched resonant tuning. Transmission of wireless power by magnetic resonance submitted by christopher a. Resonant inductive coupling or magnetic phase synchronous coupling is a phenomenon with. The circuit theory behind coupledmode magnetic resonance.
Recent research in wireless power transfer wpt using resonant inductive. Wireless power transmission to an electromechanical receiver. Power transmission by radio waves dates back to the early work of nikola tesla in 1899. Wireless power transmission technology working with. Wireless power transmission enhancement using magnetic. It provides flexibility in case of relative orientation between the power source and device during the operation. In some instances, this technology is also referred to as. Wireless power transmission working,application,types. This book builds upon that dream and is a result of intensive research in powerline, machine to machine communications.
The same frequency band and loop antenna is shared for power transmission and data communication. Unlike semiconductor devices, the efficiency of these resonators is not affected by the power level as long as the core materials air in this case are not saturated. While energyharvesting devices promise to provide enduring power for free, they are practically limited by the power densities available from their respective environmental source. Wireless power transfer system via magnetic resonant. Wireless power transfer is a novel technology and the theory is based on magnetic resonant circuit. Resonant inductive coupling is also being used in wireless power systems for portable computers. The receiver resonator coil and the load loop are designed. Pdf efficient wireless electric power transmission using. They used a selfmade wireless power device to power a 60watt bulb from a distance of 2 m, with an efficiency of 4050%. Wireless power transmission is also applicable for automotive area i. In this paper, we will introduce wireless power transfer using resonant inductive coupling for 3dics to increase power transfer efficiency and density with smaller coils.
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. Wireless power transmission using resonance induction. Nikola teslas dream in the early 20th century of a world wireless system led him to build the wardenclyffe tower, a prototype base station serving as an emitter for his world wireless system. Comparing to other conventional contactless energy transfer mechanisms, midrange wireless electricity transmission using magnetic resonant coupling provides some functional benefits.
Because the external fields of this transmission process are mainly magnetic in character, the health risks should be less than that associated with systems that emit. Research on wireless power transmission based on magnetic. Wireless power transmission via magnetic resonant coupling canachieve power transmission by several meters with high efficiency 6 7. Index terms magnetic resonance, power transmission, repeaters, wireless communication. Higher levels of transferred power is possible if larger magnetic. When we had met at the egolem conference in prague summer 2005, i could have only barely imagined working with him would produce such spectacular results. Parameters optimization for magnetic resonance coupling. Wireless power transmission by magnetic resonance circuits. Wireless power transmission using magnetic resonance. In order to reduce the dependency on battery capacity, charging while the vehicle is moving may be a solution. Introduction the initial idea of wireless power transmission by magnetic resonance method was introduced by.
The basic working principle of wireless power transfer is, two objects having similar resonant. Efficient wireless electric power transmission using magnetic resonance coupling. 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. An innovative idea 209 need for wireless power transmission wireless transmission is employed in cases where instantaneous or continuous energy transfer is needed, but interconnecting wires are inconvenient, hazardous, or impossible. Pdf wireless power transfer via magnetic resonance coupling. Magnetic resonance inductive coupling resonant inductive coupling or electrodynamic inductive effect is the solution for the main problems associated with nonresonant inductive wireless power transfer systems, specially the efficiency dependence on the power transmission distance 8. Wireless energy transfer by resonant inductive coupling. Wireless energy transfer or wireless power is the transmission of electrical energy from a power source to an electric load without interconnecting man made conductors. There are many promising,applications for the ability to transport powerover,great distances and boundaries,without the.
The vision of transmitting power without using conducting wires can be dated back to the early 20th century, when nikola tesla first started to construct his famous wardenclyffe tower near long island sound for broadcasting, wireless communication, and the transmission of wireless power in 1901. 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. Using nearfield magnetic resonance between two strongly coupled induction coils, they can transfer 60 watts of electrical power with 40% efficiency across a distance of 2 meters. The base station was to supply wireless electrical energy to a distant receiver. Wireless power transfer via strongly coupled magnetic resonances 1. Lucas jorgensen and adam culberson in conjunction with professor derin sherman introduction we experimented with wireless power transmission. We will be able to become free from lacking electric power when electric power will be supplied wirelessly. In this paper, a higheciency wireless energy transmission via magnetic resonance is implemented by using the negative permeability metamaterial structures as the magnetic ux guide. Positioningfree resonant wireless power transmission sheet. Design principles one of the most promising applications of the lefthanded metamate. The cmt method has been recently applied to a pair of capacitively loaded conductingwire loops, spaced by d 23, as shown in fig. In particular, energy transfer is often realized by using electromagnetic power, which can either.
450 36 1012 439 1081 33 244 820 318 905 1461 987 177 1475 459 803 1581 93 831 632 1186 155 254 598 209 1032 338 689 1219 1119 472 115 1456 487 1257 1003 15 1129 935 346 206 672 206 194 141 1081 66 13 1207