WIRELESS POWER TRANSFER VIA MAGNETICALLY COUPLED RESONANCE FOR SMALL ELECTRONIC DEVICES. PDF Download

Author: Wan Peng
Publisher:
ISBN:
Category :
Languages : en
Pages : 0

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Book Description
The widespread use of all kinds of small portable devices have created the demands for wireless power transfer (WPT) systems that are proper for mobile devices. In this thesis, magnetically coupled resonance (MCR) WPT systems are developed with innovative design techniques. Specifically, two MCR-WPT systems are proposed: one is symmetric while another is asymmetric. The symmetric system has a small transmitter of the same size as the receiver of 32×32×3.91 mm. The optimal charging distance is 35 mm with the maximum transfer efficiency of 32.8%. The asymmetric system has a large transmitter of 200×200×1.6 mm and the receiver size remains small. The maximum transfer efficiency is 51.8% and the optimal charging distance is 60 mm. The proposed systems are simulated using the finite element method, and then fabricated and tested. The results demonstrate that the proposed systems can enable wireless power charging of small electronics with acceptable efficiency.

Author: Yiming Zhang
Publisher: Springer
ISBN: 9811065381
Category : Technology & Engineering
Languages : en
Pages : 130

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Book Description
This thesis focuses on the key technologies involved in magnetically coupled Wireless Power Transfer (WPT). Starting from the basic structures and theories of WPT, it addresses four fundamental aspects of these systems. Firstly, it analyzes the factors affecting transfer efficiency and compares various methods for reducing the working frequency. Secondly, it discusses frequency splitting and offers a physical explanation. Thirdly, it proposes and assesses three multiple-load transfer structures. Lastly, it investigates WPT systems with active voltage-source and current-source load. As such, the thesis offers readers a deeper understanding of WPT technology, while also proposing insightful new advances.

Author: Sherif Hekal
Publisher: Springer
ISBN: 9811380473
Category : Technology & Engineering
Languages : en
Pages : 91

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Book Description
This book addresses the design challenges in near-field wireless power transfer (WPT) systems, such as high efficiency, compact size, and long transmission range. It presents new low-profile designs for the TX/RX structures using different shapes of defected ground structures (DGS) like (H, semi-H, and spiral-strips DGS). Most near-field WPT systems depend on magnetic resonant coupling (MRC) using 3-D wire loops or helical antennas, which are often bulky. This, in turn, poses technical difficulties in their application in small electronic devices and biomedical implants. To obtain compact structures, printed spiral coils (PSCs) have recently emerged as a candidate for low-profile WPT systems. However, most of the MRC WPT systems that use PSCs have limitations in the maximum achievable efficiency due to the feeding method. Inductive feeding constrains the geometric dimensions of the main transmitting (TX)/receiving (RX) resonators, which do not achieve the maximum achievable unloaded quality factor. This book will be of interest to researchers and professionals working on WPT-related problems.

Author: Eugen Coca
Publisher: BoD – Books on Demand
ISBN: 9535124676
Category : Technology & Engineering
Languages : en
Pages : 142

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Book Description
Wireless power transfer techniques have been gaining researchers' and industry attention due to the increasing number of battery-powered 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 battery-less equipment. The storage capacity of batteries is an extremely important element of how a device can be used. If we talk about battery-powered electronic equipment, the autonomy is one factor that may be essential in choosing a device or another, making the solution of remote powering very attractive. A distinction has to be made between the two forms of wireless power transmission, as seen in terms of how the transmitted energy is used at the receiving point: - Transmission of information or data, when it is essential for an amount of energy to reach the receiver to restore the transmitted information; - Transmission of electric energy in the form of electromagnetic field, when the energy transfer efficiency is essential, the power being used to energize the receiving equipment. The second form of energy transfer is the subject of this book.

Author: Chun T. Rim
Publisher: John Wiley & Sons
ISBN: 1119329051
Category : Technology & Engineering
Languages : en
Pages : 626

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Book Description
From mobile, cable-free re-charging of electric vehicles, smart phones and laptops to collecting solar electricity from orbiting solar farms, wireless power transfer (WPT) technologies offer consumers and society enormous benefits. Written by innovators in the field, this comprehensive resource explains the fundamental principles and latest advances in WPT and illustrates key applications of this emergent technology. Key features and coverage include: The fundamental principles of WPT to practical applications on dynamic charging and static charging of EVs and smartphones. Theories for inductive power transfer (IPT) such as the coupled inductor model, gyrator circuit model, and magnetic mirror model. IPTs for road powered EVs, including controller, compensation circuit, electro-magnetic field cancel, large tolerance, power rail segmentation, and foreign object detection. IPTs for static charging for EVs and large tolerance and capacitive charging issues, as well as IPT mobile applications such as free space omnidirectional IPT by dipole coils and 2D IPT for robots. Principle and applications of capacitive power transfer. Synthesized magnetic field focusing, wireless nuclear instrumentation, and future WPT. A technical asset for engineers in the power electronics, internet of things and automotive sectors, Wireless Power Transfer for Electric Vehicles and Mobile Devices is an essential design and analysis guide and an important reference for graduate and higher undergraduate students preparing for careers in these industries.

Author: Jeetkumar Mehta
Publisher: LAP Lambert Academic Publishing
ISBN: 9783659345906
Category :
Languages : en
Pages : 64

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Book Description
Last few decades has shown tremendous interest and growth in wireless technology. It was Tesla's dream to trasnfer power wirelessly from one end to other end of the world. Until few decades back it was a topic of interest for few. But this days even major and high tech companies have drawn their attention towards this technology. Apple, Samsung are few of the companies to name who wants to use wireless charging technique for their portable devices. With this work we have tried to explore this wireless technology using magnetic resonance coupling for health care such as implantable devices. The main focus was to start a project to design a receiver that can charge implantable devices such as pacemaker wirelessly. Imagine a patient who doesn't need to undergo heart surgery just to replace batteries for pacemaker, this would turn out to be a boon for humanity. The work has been carried out using software design tool HFSS and also hardware was designed accordingly. Simulation and real time measurements were carried out on pork muscle and compared. Simulation and practical measurements showed close proximity to a greater extent.

Author: Mohamed Zellagui
Publisher: BoD – Books on Demand
ISBN: 1839688017
Category : Technology & Engineering
Languages : en
Pages : 176

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Book Description
Wireless power transfer (WPT) is a promising technology used to transfer electric energy from a transmitter to a receiver wirelessly without wires through various methods and technologies using time-varying electric, magnetic, or electromagnetic fields. It is an attractive solution for many industrial applications due to its many benefits over wired connections. This book discusses the theory and practical aspects of WPT technology.

Author: IEEE Staff
Publisher:
ISBN: 9781665435284
Category :
Languages : en
Pages :

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Book Description
IWS is held annually in China to provide an international forum for presentation and exchange of the latest technical achievements in RF, microwave and millimeter wave components, circuits and systems related to the physical layer aspects of existing and emerging wireless systems and applications

Author: Takehiro Imura
Publisher: Springer Nature
ISBN: 9811545804
Category : Technology & Engineering
Languages : en
Pages : 434

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Book Description
This book describes systematically wireless power transfer technology using magnetic resonant coupling and electric resonant coupling and presents the latest theoretical and phenomenological approaches to its practical implementation, operation and its applications. It also discusses the difference between electromagnetic induction and magnetic resonant coupling, the characteristics of various types of resonant circuit topologies and the unique features of magnetic resonant coupling methods. Designed to be self-contained, this richly illustrated book is a valuable resource for a broad readership, from researchers to engineers and anyone interested in cutting-edge technologies in wireless power transfer.

Author: Byunghun Lee
Publisher: MDPI
ISBN: 3036507825
Category : Technology & Engineering
Languages : en
Pages : 344

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Book Description
This book focuses on emerging wireless power/data and energy harvesting technologies, and highlights their fundamental requirements, followed by recent advancements. It provides a various technical overview and analysis of key techniques for wireless power/data and energy harvesting system design. The state-of-the-art system introduced in this book will benefit designers looking to develop wireless power transfer and energy harvesting technologies in a variety of fields, such as wearable, implantable devices, home appliances, and electric vehicles.