ArticlePDF Available

Analysis of Wireless Power Transmission

Authors:

Abstract and Figures

The advent of various wireless technologies have revolutionized the communication infrastructure and consequently changed the entire world into a global village. Use of wireless technology has also been made for transmission of electric power wirelessly. It increases the portability of power systems and integrates the communication technologies and electric power to the same platform. This paper presents a comprehensive review and detailed analysis of various techniques used for wireless power transmission. Feasibility, implementations, operations, results and comparison among different methods have also been covered in order to identify the favorable and economical method for low power and small distance applications.
Content may be subject to copyright.
A preview of the PDF is not available
... WPT technology is expected to dominate numerous upcoming applications in the future and revolutionised business, and as such is perceived and regarded as one of the leading and the most impacted emerging technology [1], [6]. ...
... Watt bulb is powered without physical contact (wirelessly) within a range of 2m, with an efficiency of 40% and a resonant frequency of 10MHz. Later a repeated experiment was conducted at Intel with an increase of 75% efficiency, but this time within a range of 1m [6]. Resonant power transmission is one of the exceptions and broadly used technique of magnetic power transmission, with a wide range of applications, partial by the similar limitations of magnetic field productions and efficiency [7]. ...
... 2) Extremely difficulty in implementation and maintenance of great quality [6]. ...
... WPT technology is expected to dominate numerous upcoming applications in the future and revolutionised business, and as such is perceived and regarded as one of the leading and the most impacted emerging technology [1], [6]. ...
... Watt bulb is powered without physical contact (wirelessly) within a range of 2m, with an efficiency of 40% and a resonant frequency of 10MHz. Later a repeated experiment was conducted at Intel with an increase of 75% efficiency, but this time within a range of 1m [6]. Resonant power transmission is one of the exceptions and broadly used technique of magnetic power transmission, with a wide range of applications, partial by the similar limitations of magnetic field productions and efficiency [7]. ...
... 2) Extremely difficulty in implementation and maintenance of great quality [6]. ...
... The schematic of a traditional SCMR system is shown in Fig.1, where l 1 is the distance between source loop and TX resonator, l 2 is the distance between TX and RX resonators, and l 3 is the distance between RX resonator and load loop. The conformal SCMR (CSCMR) was proposed in [8] recently. In CSCMR systems, the source and TX resonator as well as the load and RX resonator are placed in the same plane. ...
Conference Paper
Full-text available
In this paper, a printable compact Conformal Strongly Coupled Magnetic Resonance (CSCMR) method for wireless powering is proposed. This new wireless power transfer method uses printed planar transmitter and receiver configurations on substrates to shrink the volume down to λ0/66. Also, self-resonant spirals, which do not need lumped capacitors to achieve resonance, are designed for our novel CSCMR systems. This simplifies the fabrication process of SCMR systems and repeatable designs can be easily achieved. The efficiency of our proposed methods is validated using measurements and simulations. Our proposed designs can be incorporated easily on PCBs and added onto modern handheld devices.
... A part of this work has been accepted as conference paper in [15]. Rest of the paper is organized as follows. ...
Article
Full-text available
The advent of various wireless technologies have revolutionized the communication infrastructure and consequently changed the entire world into a global village. Use of wireless technology has also been made for transmission of electric power wirelessly. It can reduce heavy line losses; increase the portability of power systems. It also integrates the communication technologies and electric power to the same platform. This paper presents a comprehensive review and detailed analysis of various techniques used for wireless power transmission. Role of wireless power transmission in applications of smart grid like electric vehicle charging has also been covered. Feasibility, implementations, operations, results and comparison among different methods have been elaborated in order to identify the favourable and economical method for low power and small distance applications.
Conference Paper
This paper provides the complete progresses of designing, simulating and constructing of a wireless power transfer (WPT) system. Moreover, investigations on the transmission efficiency for different magnetic materials under varying operating frequencies in the designed wireless power transfer system were conducted. After building a contactless power transfer system with a large inductor as a current source, a set of magnet cores with similar specifications but different sizes were applied to the system. Then, the operating frequency varied from 10 KHz to 140 KHz. The voltage and current of the primary and second side of the WPT system were measured by voltage and current probes. Thus, power and transmission efficiency against varying operating frequencies for different magnetic materials were obtained and analyzed. It showed that within the selected range of switching frequency, the efficiency of the system is proportional to the frequency and increasing with operating frequency. Additionally, among four selected magnetic material, the ferrite has the best performance.
Article
Full-text available
The aim of this paper is to give an overview of Wireless power transmission Technologies, such technologies were increasing as the applications of mobile devices, because these devices requires frequent recharging and wired connection limits its immovability, so the significance of mobile is totally lost. In easy manner the transmission of electric power is done with the help of wires. In this paper I am presenting the concept of cable less transmission of power, i.e. transmitting power without using any wires.
Conference Paper
This work investigates the contactless power delivery system with an air gap of 0 to 3cm between the primary and secondary coils for mobile device charging applications. The proposed power electronic energy conversion system is built based on electromagnetic resonant coupling principle. Through the resonant coupling, the system is able to deliver a large percentage of energy to the secondary side through a wider air gap for charging applications. Coupling coils with converter and frequency tracking circuits are experimented. A user-friendly messaging system is added to the system to indicate the charging activation. The system was built in the laboratory with experimental measurement data to validate its functionality and performance.
Conference Paper
In this paper, a broadband Wireless Power Transfer (WPT) system through novel conformal Strongly Coupled Magnetic Resonance (SCMR) is proposed. Theoretical analysis of the conformal SCMR is studied based on equivalent circuit and system network. Compared with the conventional SCMR system, the novel conformal SCMR system can significantly broaden the bandwidth, achieving more than 7 times of the conventional one. To verify the proposed method, a typical broadband WPT system is fabricated, measured, and compared with simulation result. With large bandwidth and good power transfer efficiency, this design has great potential to be used in various applications.
Article
Full-text available
In this paper, we present the concept of transmitting power withoutusing wires i.e., transmitting power as microwaves from one placeto another is in order to reduce the transmission and distributionlosses. This concept is known as Microwave Power transmission(MPT). We also discussed the technological developments inWireless Power Transmission (WPT). The advantages,disadvantages, biological impacts and applications of WPT are alsopresented.
Article
This paper addresses digital communication in a Rayleigh fading environment when the channel characteristic is unknown at the transmitter but is known (tracked) at the receiver. Inventing a codec architecture that can realize a significant portion of the great capacity promised by information theory is essential to a standout long-term position in highly competitive arenas like fixed and indoor wireless. Use (nT, nR) to express the number of antenna elements at the transmitter and receiver. An (n, n) analysis shows that despite the n received waves interfering randomly, capacity grows linearly with n and is enormous. With n = 8 at 1% outage and 21-dB average SNR at each receiving element, 42 b/s/Hz is achieved. The capacity is more than 40 times that of a (1, 1) system at the same total radiated transmitter power and bandwidth. Moreover, in some applications, n could be much larger than 8. In striving for significant fractions of such huge capacities, the question arises: Can one construct an (n, n) system whose capacity scales linearly with n, using as building blocks n separately coded one-dimensional (1-D) subsystems of equal capacity? With the aim of leveraging the already highly developed 1-D codec technology, this paper reports just such an invention. In this new architecture, signals are layered in space and time as suggested by a tight capacity bound.
Article
Using self-resonant coils in a strongly coupled regime, we experimentally demonstrated efficient nonradiative power transfer over distances up to 8 times the radius of the coils. We were able to transfer 60 watts with ∼40% efficiency over distances in excess of 2 meters. We present a quantitative model describing the power transfer, which matches the experimental results to within 5%. We discuss the practical applicability of this system and suggest directions for further study.
Wireless power Transmission: Applications and omponents
  • Anuradha Tomar
  • Sunil Gupta
Tomar, Anuradha, and Sunil Gupta. "Wireless power Transmission: Applications and omponents." International Journal of Engineering 1.5 (2012).
Wireless transmission of electricity development and possibility
  • T Mandal
  • Kumar
Mandal, T. Kumar, "Wireless transmission of electricity development and possibility," Proceedings of Sixth international symposium Nikola Tesla. Belgrade, Serbia. 2006.