In this paper, the design and implementation of a wireless power transfer system for moving electric vehicles along with an example online vehicle are presented. Electric charged on roadway by technology. Electrical practical designs inverter, lines, pickup, rectifier, regulator as well optimized core structure large air gap described. Also, electromotive force shielding is suggested. The overall was implemented tested. experimental results showed that 100-kW 80% efficiency under 26-cm acquired.

In this paper, we introduce the basic principles of wireless power transfer using magnetic field resonance and describe techniques for design a resonant coil, formation distribution, electromagnetic (EMF) noise suppression methods. The experimental results systems in consumer electronics applications are discussed terms issues related to their efficiency EMF noise. Furthermore, present passive shielding method cancellation reactive current loop utilization these methods an online electric...

In this paper, we propose the concept and design methodology for a resonant reactive shield reduction of magnetic field leakage from wireless power transfer (WPT) systems. By using LC resonance, can generate cancelling to reduce incident WPT coils effectively total without consuming additional power. The shielding effectiveness its effect on efficiency are analyzed with simulation measurements. For practical application wirelessly charged electric vehicles, an automatic tuning system is also...

For wireless charging of electric vehicle (EV) batteries, high-frequency magnetic fields are generated from magnetically coupled coils. The large air-gap between two coils may cause high leakage and it also lower the power transfer efficiency (PTE). first time, in this paper, we propose a new set coil design formulas for high-efficiency low harmonic currents procedure high-power (WPT) system. Based on proposed procedure, pair with field shielding 1-kW-class golf-cart WPT system is optimized...

Demand and interest in wireless power transfer (WPT) have been rapidly increasing lately. However, WPT systems problems with electromagnetic field (EMF) leakage, which has stimulated methods to suppress EMF leakage levels. In this paper, we propose a compact resonant reactive shielding coil topology for reducing near-field mobile device application. The proposed employs closed loop matching capacitors, is demonstrated dramatically reduce the magnetic from system. For validation, was...

Wireless power transfer (WPT) technology is a promising way for convenient and safe battery charging without any electrical contact, which may cause an unwanted electric spark or deliver dangerous current to the users. When transferring from source battery, strong electromagnetic fields (EMFs) are generated. Moreover, inverter output contains wide range of harmonics. Therefore, it important reduce EMFs interference (EMI) in WPT system. For first time, this paper, we propose new tightly...

The impedance of a power-distribution network (PDN) in three-dimensionally stacked chips with multiple through-silicon-via (TSV) connections (a 3D TSV IC) was modeled and analyzed using power/ground (P/G) array model based on separated P/G chip-PDN models at frequencies up to 20 GHz. proposed modeling analysis methods for the are fundamental estimating PDN impedances ICs because they composed several chip-PDNs thousands connections. Using model, we obtained very efficient analyses...

In this paper, a novel resonant reactive shield using double-shield coil and phase-shift circuit is proposed to reduce magnetic field leakage in electric vehicle wireless charging applications. The double-reactive with four-capacitor phase shifter generates canceling field, the of which perfectly opposite that incident effectively reducing as result. concept structure, an equivalent-circuit model analysis are explained discussed. shielding effectiveness compared conventional single-shield by...

This article reviews recent standardization activities and scientific studies related to the assessment of human exposure electromagnetic fields (EMF). The differences standards consumer products medical applications are summarized. First, we reviewed body modeling tissue dielectric properties. Then, explain rationale current from viewpoint EMF process for product compliance based on these standards. wireless power transfer, as an example emerging devices, environmental EMFs in our daily...

In this paper, we introduce the On-line Electric Vehicle (OLEV) system and its non-contact power transfer mechanism propose some techniques for reduction of electromagnetic fields (EMFs) from line vehicle itself. By applying a metallic plate shield, horizontal/vertical connecting wire loop cancellation, low frequency EMFs have been significantly reduced. Simulation measurement results application to vehicles currently in service are also given.

Current wireless power transfer (WPT) technology can only allow over a limited distance because, as the between transmitter (Tx) and receiver (Rx) coils increases, efficiency (PTE) decreases with steep slope, while electromagnetic field (EMF) leakage increases. In order to increase PTE decrease EMF simultaneously, we need develop method concentrate magnetic fields Tx Rx coils. this paper, proposed novel metamaterial structure realize high low leakage. Metamaterials confine by negative...

This paper proposes an autonomous coil alignment system (ACAS) for electric vehicles (EVs) with dynamic wireless charging (DWC) to mitigate the reduction in received power caused by lateral misalignment between source and load coils. The key component of ACAS is a novel sensor design, which can detect coil’s left or right position relative observing change voltage phase. allows be estimated through transfer (WPT) alone, tracking method vehicular applications. Once detected, vehicle’s...

Wireless power transfer (WPT) technvvology can be employed for the wireless charging of unmanned underwater vehicles. However, in an WPT (UWPT) system, eddy current loss (ECL) caused by conductivity seawater must considered. Designs that do not properly consider ECL cause unpredictable efficiency decrease system. In this article, we propose efficient modeling UWPT system using Z-parameters. Utilizing electromagnetic analysis and two-port network analysis, derive impedance model coils...

This paper describes a method to suppress the leakage magnetic field from wireless power transfer (WPT) system through use of ferrimagnetic material and metallic shielding. To demonstrate advantages coil structure with shielding, distributions electrical performance three different structures are investigated via 3D electromagnetic (EM) solver SPICE simulation. Results show that suggested considerably reduces in vicinity WPT without significant loss performance. The simulation results...

Wireless charging of electric vehicles based on wireless power transfer (WPT) has become increasingly popular in recent years. However, a leakage electromagnetic field (EMF) that affects other electronic devices or the human body is inevitably generated from coils WPT system, and requirements regarding suppression EMF are increasing. In this paper, we propose novel three-phase line system for reduction EMF. The proposed structure employs six lines to reduce magnetic flux. This compared with...

PICTURE AN ALL-ELECTRIC VEHICLE cruising down the highway, emitting little noise and no noxious fumes. It's such an improvement that you have to wonder why only a handful of all-electric vehicles are now available on mass market. · Here's big reason: Picture driver same car getting call from relative living far away who needs immediate help. Suddenly, driver's eyes become riveted most important indicator dashboard: estimated number kilometers can go remaining battery charge. Will he make it...

Capacitive power transfer (CPT) system can be employed for wireless charging of drone applications. However, in the CPT system, cross-coupling capacitance caused by coupling two pairs plates on different sides, which do not form main must considered. Designs that properly consider cause decrease efficiency system. In this article, we propose a separate circular capacitive coupler To reduce applications, same side are separated. The circuit model is presented; it considers total six...

The paper proposes a method for locating an electric means of transportation such as vehicles that adopts dynamic wireless charging system. works with magnetic power transfer systems, based on ferrite core counting approach. counter system operates by all the cores source coils used guiding field in proposed has position detection accuracy equivalent to spacing cores. In addition, this identification (FPID) messaging unit correct errors. FPID blocks which are successively placed under coil...

Wireless power transfer (WPT) is being developed to supply electric trains, using a source coil in/on the railway track and pick-up on train. A number of benefits can be obtained by eliminating catenary pantograph currently used for supply. However, WPT employs coils, electromagnetic field generated interfere with conventional train detection methods, such as circuits RFID, installed tracks. Train position information critical operation, especially high speed trains. This paper proposes...

Wireless power transfer (WPT) technology is an electrically safe and convenient method of charging batteries. WPT allows elimination exposed contacts, which can cause direct electrocution human. In spite the great advantages, system inevitably generates strong electromagnetic fields (EMFs), causing interference on nearby electrical devices as well harmful influence human health. Therefore, it important to satisfy EMF guidelines reduce leakage magnetic field harmonics in system. For first...

Implantable medical devices (IMDs) enable patients to monitor their health anytime and receive treatment anywhere. However, due the limited capacity of a battery, functionalities are restricted, may not achieve intended potential fully. The most promising way solve this problem is wireless power transfer (WPT) technology. In study, WPT based implantable electrocardiogram (ECG) monitoring device that continuously records ECG data has been proposed, its effectiveness verified through an animal...

This article describes a method to reduce electromagnetic interference (EMI) components at odd harmonic frequencies of wireless power transfer (WPT) system. In WPT system, leakage magnetic field is generated, which may adversely affect the human body or other electronic devices. The previous reactive shielding could field, but it has disadvantage reducing efficiency (PTE). By using frequency split phenomena, can EMI with increasing PTE. this article, that while PTE proposed. Specifically,...