Small devices such as wearable and hearable devices with a limited space for antenna implementation can be connectorless because the antenna can be downsized by using this bandwidth. This book describes the fundamentals and applications of wireless power transfer wpt in electric vehicles evs. This book builds upon that dream and is a result of intensive research in powerline, machine to machine communications, and wireless power transfer globally. He demonstrated the first 5m and 12m distance wpt using innovative. However, for all the mobility we enjoy these days, we still tether our mobile devices to the wall at the end of the day to recharge them. The base station was to supply wireless supply of electrical energy to a distant receiver. Wireless power transfer between distance and efficiency. Nikola tesla has been the pioneer in the field of wireless. Resonant wireless power transfer infineon technologies. Efficient and easytouse wireless charging is the next major step in freeing our devices from their wired connections.
An introduction to the wireless power consortium standard. The microwave oven uses the concept of wireless power transfer to heat food. Wireless power transmission or transfer wpt technology is considered as one of game changing technologies. Wireless power transfer wpt enables power to be transferred from a grid or storage unit to a device without the need for cable connections.
The transfer of power from source to receiver is a technology that has existed for over a century. Principles and engineering explorations, encompasses theory and engineering technology, which are of interest for diverse classes of wireless power transfer. Nikola tesla 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. Wireless power transfer an overview sciencedirect topics. 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. Wireless power transfer has caught research attention since long ago, as a separate problem with wireless information transmission. Contrary to general belief, wireless power transfer wpt has been in use for a long time fig. While data transfer of mobile devices is already wireless, charging is typically still performed with cables. Wireless power transfer algorithms, technologies and applications. The project was done at nextfloor oy, a company based in helsinki, finland. The probability density functions pdf of the noise and ms with normal. These technologies differ in the distance over which they can transfer power but all use time varying electric fields.
Power transmission by radio waves dates back to the early work of nikola. This can be performed by inductive coupling of magnetic fields as well as by direct radiative transfer via beams of electromagnetic waves, commonly radiowaves, microwaves or lasers. About this book recent advances in wireless power transmission wpt technologies have enabled various engineering applications with potential product implementation. 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. 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. Getting rid of cables for the ease of operators of medical devices. An introduction to the wireless power consortium standard and tis compliant solutions introduction wireless power is beginning to show great potential in the consumer market. Laser is another method which uses similar concept as wireless power transfer. Inductive coupling is the most widely used wireless technology with. To give you a taste whats possible in wireless power transfer applications, wed like to share some examples of this technology in combination with others, such. Recent advances in wireless power transmission wpt technologies have enabled various engineering applications with potential product. Wireless power transmission circuit and its working.
Wireless power transfer for electric vehicles and mobile devices. Wireless power transfer fundamentals and technologies. This book focuses on inductive wireless power transfer wpt which relies on coil resonators and power converters, starts with background and basic theories of wpt which are essential for beginners in this field, and addresses two major challenges of wpt. Wireless power transfer river publishers series in. In particular, there has been a rapid expansion of wpt in mobile phone chargers, stationary charging electric vehicles evs, and dynamic charging evs, also called roadpowered evs rpevs. Wireless power transfer wpt has recently evolved as a very active research. Wireless power transfer wpt is one of the hottest topics being actively studied, and it is being widely commercialized. Thus, this is all about wireless power transmission, wireless power transfer circuit working and its applications which include simple electronic devices like mobile phones, mobile chargers, etc wireless power transfer not only reduces the risk of shock and stops to plug frequently into the sockets. Rim, in power electronics handbook fourth edition, 2018. Wireless power history, theory, sources, receivers, and applications are covered conscientiously and adroitly. Wireless power transfer wpt is a technology that allows devices to be powered wit. Wireless power transfer for electric vehicles and mobile. 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. 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.
He demonstrated the first 5m and 12m distance wpt using innovative dipole. Low wireless power transfer using inductive coupling. We will also describe the current wireless systems in operation today as well as emerging. He has published several books and over 180 technical papers, with 59 u. Wireless energy transfer or witricity wireless electricity transfers electricity instead of data. The ability to power an electronic device without the use of wires provides a convenient. Wireless transmission of electrical power overview of. This book puts stateoftheart research and development in wireless power transfer technologies together. Commonly referred to as dynamic wireless power transfer.
Resonant wireless power transfer abstract our mobile devices are becoming more and more wireless. Topics covered include power electronic techniques, advanced control strategies, as well as classic and emerging applications such as smart ocean energy systems and wireless power transfer and charging of underwater autonomous vehicles. Modulating wireless power signal to carry data bidirectionally. He started efforts on manuscript received february 25, 2011. Number of household points receives electricity at the same frequency using. It consists of chapters that focus on interesting topics of. This paper proposes a wireless power transfer system that consists of a transmitter with a resonator and a receiver without a resonator. Wireless power transfer is a collective term that refers to a number of different technologies for transmitting energy by means of electromagnetic fields. This book builds upon that dream and is a result of intensive research interest in powerline, machine. Wireless power transfer for electric vehicles and mobile devices book abstract. We will be able to become free from lacking electric power when electric power will be supplied wirelessly. Wireless power transfer principles and engineering. 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.
The future aguboshim, emmanuel chukwujioke postgraduate student, nnamdi azikiwe university, awka, anambra state, nigeria. The book answers common technical questions and connects disparate pieces, such as why rectenna arrays behave differently than ordinary antenna arrays and why a rectenna utilizing a single diode can outperform a fourdiode bridge. Wireless power transfer massachusetts institute of. Wireless power transfer principles and engineering explorations. This system utilizes magnetic coupling and resonance. 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. Wireless power transmission is the transmission of electrical energy without using any conductor or wire. The wireless power transfer technology has its unique advantages which do not exist in the traditional wired power supply because of the complete electrical isolation between power supply and. Introduction wireless charging 1, 2, also known as wireless power transfer, is the technology that enables a power source to transmit electromagnetic energy to an electrical load across. Rim also developed wpt for stationary ev charging, mobile devices, robots, and drones. In last few years, our society experienced a silent, but quite dramatic, revolution in terms of the number of autonomous electronic devices e. Underwater wireless power transfer smart ocean energy. The base station was to supply wireless electrical energy to a distant receiver. Study methods of wireless power transfer technology in.
Wpt can be utilized to charge batteries in various pieces of equipment without the need for a wired connection. Wireless power transfer via radiowaves wiley online books. Rim developed the wireless power transfer wpt of online electric vehicles that was selected as the 50 best inventions of 2010 by time and the first of 10 emerging technologies in 20 by the world economic forum. This book is a collection of contemporary research and developments in the area of wireless power transfer technology. In the first part, the basic principles of wireless power transfer are described with the different transmissions paths, the leading standards and. From mobile, cablefree recharging 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. The goal of the project was to develop a wireless power transfer wpt system and implement it in innovative flooring. This book discusses, for the first time, wireless power transfer in the ocean environment. The stately calm of a washington morning is shattered when a group of terrorists descends, killing dozens and taking.
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