To learn more, view our Privacy Policy. To browse Academia. Log in with Facebook Log in with Google. Remember me on this computer. Enter the email address you signed up with and we'll email you a reset link. Need an account? Click here to sign up. Download Free PDF. Jhunusurya Pattnaik. A short summary of this paper. Download Download PDF. Translate PDF. Pravat Ku. Name of the guide- Prof. Last but not the least I express my sincere and hearty thanks to all those who have directly or indirectly helped me in completing this seminar presentation and report successfully.
How WPT technology works 6. However, this is also an age where mobile phones, MP3 players, laptop computers and domestic robots exist alongside old- fashioned power wires and bulky batteries. Unlike information, electrical energy is still physically confined to these borderline anachronistic appliances.
Overcoming these last obstacles would finally make this a truly wireless world. It was the annoying reminder that the battery was running out, once again. The next morning, he returned to his office at the MIT determined to find a solution to the problem. An exhaustive literature search soon revealed that wireless transmission of power was not an original idea.
Back in the s Nikola Tesla, one of great pioneers of electromagnetism, was the first to envisage that electricity, then a newly found form of energy, should be delivered to every house, in every city, in every country on the planet.
However, Tesla did not foresee that people would be willing to drag wires around the entire globe to use electricity. Instead, he dreamed of a way of transferring electrical energy wirelessly over long distances. The construction was interrupted in about , not because the method was considered impractical or dangerous, but because the funder, the famed financier and banker J P Morgan, was concerned that there would be no way to bill remote electricity users.
Nowadays, more than a century after Tesla, electricity reaches nearly every home through a global electrical grid. In the near future, wireless electricity could replace the ubiquitous power cable. Rauscher calculates the capacitance to be about 15, microfarads for the complete earth-ionosphere cavity capacitor. In comparison to the 3 billion kW available from the earth system, it is possible to calculate what the U.
In , about 11 Quads quadrillion Btu were actually used by consumers for electrical needs, which is equal to 3. Dividing by the hours in a year, we find that only million kW are needed on site to power our entire country. This would still leave 2. The reallyshameful U. No other energy production system of any kind in the world has so much wastefulness. Instead of trying to build 2 power plants per week at MW each for the next 20 years only to have a total of additional 6 trillion kWh available by , as some U.
Fig-1 losses in the wired system 2. Wireless power transmission can supply power to places that are difficult to reach. Especially small communities in rural areas could be supplied with power using WPT. In this way the cost associated with deploying towers and cables can be saved. These two words have become the base for the development in the technology.
Moreover it does not involve any emission of carbon gases. Many countries can enjoy the economic benefits of this technology. A signal resonant energy receiver is an ultimate device to connect various electrical applications. Patent , describing a system for power transfer at 3 kHz.
Houston Street laboratory in New York City by means of "electrodynamic induction," that is to say wireless resonant inductive coupling. Reginald Fessenden - U. Patent Interference No. Louis World's Fair, a prize is offered for a successful attempt to drive a 0. Brown publishes an article exploring possibilities of microwave power transmission. John Boys at The University of Auckland in New Zealand, develops an inverter using novel engineering materials and power electronics and conclude that power transmission by means of electrodynamic induction should be achievable.
A first prototype for a contact- less power supply is built. Auckland Uniservices, the commercial company of The University of Auckland, patents the technology. John Boys team develops novel technology enabling multiple vehicles to run on the same inductive power loop and provide independent control of each vehicle.
Auckland UniServices Patents the technology. Uses coupled resonant coils in a flat "pad" style to transfer tens of watts into a variety of consumer devices, including lamp, phone, PDA, iPod etc. Near field energy itself is non radiative, but some radiative losses will occur.
In addition there are usually resistive losses. Near field transfer is usually magnetic inductive , but electric capacitive energy transfer can also occur. In a wireless energy transmission system using this principle, a high-power ultraviolet beam might be used to form vertical ionized channels in the air directly above the transmitter-receiver stations.
The same concept is used in virtual lightning rods, the electrolaser electroshock weapon and has been proposed for disabling vehicles. A global system for "the transmission of electrical energy without wires" dependant upon the high electrical conductivity of the earth was proposed by Nikola Tesla as early as Around this conducting earth is an atmosphere. The earth is a conductor; the atmosphere above is a conductor, only there is a little stratum between the conducting atmosphere and the conducting earth which is insulating.
Now, you realize right away that if you set up differences of potential at one point, say, you will create in the media corresponding fluctuations of potential. But, since the distance from the earth's surface to the conducting atmosphere is minute, as compared with the distance of the receiver at 4, miles, say, you can readily see that the energy cannot travel along this curve and get there, but will be immediately transformed into conduction currents, and these currents will travel like currents over a wire with a return.
The energy will be recovered in the circuit, not by a beam that passes along this curve and is reflected and absorbed,. The intention of the Tesla world wireless energy transmission system is to combine electrical power transmission along with broadcasting and point-to-point wireless telecommunications, and allow for the elimination of many existing high-tension power transmission lines, facilitating the interconnection of electrical generation plants on a global scale.
Whereas, we found that the delivered output power is The delivered output power was The delivered power was decreased to 0. However, the delivered power was decreased to 0. In this context, the delivered power of 0. This result fits the requirement for BMIs with low-power consumption as recommended in [57], [58]. Three different loads were used to check the transfer efficiency, as demonstrated in Fig.
The transfer efficiency was calculated according to equation 7 in section 5 as men- tioned earlier, variables of the voltage source, transfer dis- tance, and load were considered in our experiments. As shown in Fig. In addition, the minimum transfer efficiency is 0. Moreover, when the Vsource is 60 V, the maximum and minimum transfer efficiencies are The maximum transfer efficiency was developed to Here, the maximum and minimum transfer efficiencies were The DC output voltage of 5 V was Fig.
Comparison between performance metrics from previous studies and this work. Hence, IX. A simple comparison with previous research transfer efficiency, respectively, according to the change in utilizing wireless power transfer in biomedical sensors and applied Vsource within a fixed distance i. All fig- implants was accomplished. The achieved result between the transmitter and receiver coils were compared is appropriate for charging and satisfies the requirement for with those of the proposed SWC-MRC system to confirm BMIs with low power consumption, such as cardiac pacemak- the performance of the proposed system.
The comparison ers and neural implants. In addition, the transfer three loads i. Moreover, the delivered power was Transfer efficiencies of Power supply and energy consumption are [9] H.
Qiang, X. Huang, L. Tan, and H. Wireless power transfer is one of the solutions for Wire- [10] D. Sun, M. Chen, S. Podilchak, A. Georgiadis, Q. Abdullahi, R. Joshi, less power transfer, specifically MRC, plays an essential S. Yasin, J. Rooney, and J. Textiles, vol. A design and [11] Y. Liu, Y. Li, J. Zhang, S. Dong, C.
Cui, and C. Mahmood, S. Mohammed, S. Gharghan, A. A spider coil with a AWG J. Gu and J. We observed that the increase in Hwang, C. Kang, Y. Son, and B. Also, the system efficiency decreases as the air gap [15] J. Wu, C. Zhao, Z. Lin, J. Du, Y. Hu, and X. Ge, L. Cheng, Y. Yao, and W. Circuits Syst. I, Reg. Papers, vol. Future work Jun.
Yang, Y. Shi, W. Wei, and H. RF Microw. The current research did not consider the human tissue [18] Q. Wang, W. Che, M. Dionigi, F. Mastri, M. Mongiardo, and G. Al-Saadi, S. Valtchev, L. Romba, J. Ballo, M. Bottaro, and A. Waters, J. Park, J. Bouwmeester, J. Valdovinos, A. Sample, J. Smith, and P. Ausra, S. Munger, A. Azami, A. Burton, R. Peralta, J. Heart Lung Transplantation, vol. Campi, S. Cruciani, F. Maradei, and M. Zurbuchen, A. Haeberlin, A.
Pfenniger, L. Bereuter, J. Jutzi, C. Huber, J. Fuhrer, and R. Haerinia and R. Gharghan and S. Jawad, R. Nordin, S. Gharghan, H. Jawad, and M. Gharghan, and S. Sys- [6] R. Shadid and S. DeSE , Liverpool, U. Antennas Propag. Guo, P. Zhang, J. Guo, L. Wang, and G. Houran, X. Yang, and W. IEEE Int. Mechatronics Autom. Cruciani, V. De Santis, F. USA, Jun. Huang, A.
Murray, and B. Shadid, M. This receives all the ability required for a flight from a small wave beam. Electrical resonance: Electrical resonance happens in an electrical circuit at a selected resonance frequency once the electric resistance between the input and output of the circuit is at a minimum or once the transfer f maximum.
Typically this happens once the electric resistance between the input and output of the circuit is sort of zero and once the transfer operates is near one. Resonance of a circuit involving electrical devices and inductances happens as a result of the collapsing magnetic flux of the inductor generates an electrical current in its windings that charges the capacitor, and so the discharging electrical device provides an electrical current that builds the magnetic flux within the inductance, and also the method is perennial frequently.
Distinct methods of transferring electricity in a wireless manner are classified below:. Fig1: Types of Transferring Electricity Wirelessly. Distance Parameter:.
Below are the advantages of wireless electricity:.
0コメント