This paper presents the derivation and investigation of a practical model structure for a large-capacity WPT system capable of powering a railway system. Comparative analyses of the secondary pickup induced voltages and rail induced voltages for various WPT models are conducted to derivate the optimal WPT model which could be applied to railway vehicles. Through the analyses for various WPT mod...

It has been reported that, through the evanescent near fields, the strongly coupled magnetic resonance is able to achieve an efficient mid-range Wireless Power Transfer (WPT) beyond the characteristic size of the resonator. Recent studies on of the relay effect of the WPT allow more distant and flexible energy transmission. These new developments hold a promise to construct a fully wireless Bod...

The basal ganglia (BG) mediate certain types of procedural learning, such as probabilistic classification learning on the 'weather prediction task' (WPT). Patients with Parkinson's disease (PD), who have BG dysfunction, are impaired at WPT-learning, but it remains unclear what component of the WPT is important for learning to occur. We tested the hypothesis that learning through processing of c...

The proposition is offered that only by forming international alliances will economically viable commercial wireless power transmission (WPT) result. Radio emissions from commercial WPT will. likely extend beyond the borders of a single nation. It is challenging to create a legitimate new service from the existing Radio Frequency Regulations. Because many nations participate in the Internationa...

This paper discusses the near-field inductive coupling wireless power transfer (WPT) at the system level, with detailed analyses on each state-of-the-art WPT output voltage regulation topologies. For device miniaturization and power loss reduction, several novel architectures for efficient WPT were proposed in recent years to reduce the number of passive components as well as to improve the sys...

In this study, WPT-A, a type of water-soluble homogeneous lichen polysaccharide, was isolated and purified from Parmelia tinctorum. We investigated whether WPT-A has radioprotective effects when administered before total-body irradiation (TBI). Mice were treated with WPT-A via intraperitoneal injection (i.p.) once per day for three consecutive days prior to 7, 7.5, 8.5, 10 or 10.5-Gy TBI. Our r...

Conditions for load-independent output voltage or current in two-coil wireless power transfer (WPT) systems have been studied. However, analysis of load-independent output current in three-coil WPT system is still lacking in previous studies. This paper investigates the output current characteristics of a three-coil WPT system against load variations, and determines the operating frequency to a...

Wireless Power Transmission (WPT) has been an ongoing research area since 1873 when James Maxwell first theorized transferring power could be achieved through electromagnetic radiation. While microwave systems were first to be developed, in recent years the viability and demand for optical systems has grown significantly. In the space elevator contest sponsored by NASA in 2009, LaserMotive succ...

Wireless power transfer (WPT) has been studied formore than one hundred years sinceNikola Tesla proposed his WPT concept. Asmore and more portable electronic devices and consumer electronics are developed and used, the need for WPT technology will continue to grow. Recently, WPT via strongly coupled magnetic resonances in the near field has been reported by Kurs et al. (2007). The basic princip...

The research progress in the field of Wireless Power Transmission (WPT) using Magnetic Resonance coupling with DC-DC converter. The transfer of energy from a source to a receiver has traditionally necessitated the use of a physical connection, but wireless power transfer (WPT) is essentially the transmission of an electrical current from a power source to a receiving device without the need for...