Results 21 to 30 of about 1,453,812 (287)

Optimizing Wireless Power Transfer From Multiple Transmit Coils

open access: yesIEEE Access, 2018
The widespread need for ubiquitous power delivery is driving the commercialization of inductive wireless power transfer (WPT). Wireless power transfer systems, however, are plagued by low efficiency.
Tomohiro Arakawa   +6 more
doaj   +1 more source

Efficient power transfer through small apertures

open access: yesElectronics Letters, 1990
Efficient power transfer through a small slot in a thin conducting screen separating two resonant cavities was experimentally achieved by empirically optimising the natural resonant frequency of the slot and the circuit coupling factors. The design of a power combining circuit based on the use of slot coupled microstrip sources is discussed in terms of
P.G. Frayne, J. Potter
openaire   +1 more source

Research on Characteristics of Wireless Power Transfer System Based on U-Type Coupling Mechanism

open access: yesJournal of Electrical and Computer Engineering, 2021
Aiming at the power supply problem of high-speed rotating equipment, a wireless power transfer system based on U-shaped core coupling mechanism with a primary coil is proposed.
Jia Jinliang, Yan Xiaoqiang
doaj   +1 more source

A Three-Coil Constant Output Wireless Power Transfer System Based on Parity–Time Symmetry Theory

open access: yesApplied Sciences, 2023
In a three-coil wireless power transfer system with relay coils, the transmission efficiency and output power of the system decreases with changes in the adjacent coupling coefficients.
Yuntao Yue, Jiahui Yang, Ruofan Li
doaj   +1 more source

EXPLORING RECENT TRENDS AND CHALLENGES IN WIRELESS POWER TECHNOLOGY [PDF]

open access: yesProceedings on Engineering Sciences
Wireless power technology has long been a subject of significant discussion due to its potential to transform energy transfer methods in various applications, ranging from consumer electronics to medical devices.
Lakshay Arora   +3 more
doaj   +1 more source

Comparison of the heat transfer efficiency of nanofluids [PDF]

open access: yes, 2015
The continuously increasing power involved in many applications, coupled with the very small size of a number of component devices, is pushing the technical community to look for more efficient heat transfer systems, to remove the heat generated and ...
Bubbico, Roberto   +4 more
core   +1 more source

A critical review of recent progress in mid-range wireless power transfer [PDF]

open access: yes, 2014
Starting from Tesla’s principles of wireless power transfer a century ago, this critical review outlines recent magneto-inductive research activities on wireless power transfer with the transmission distance greater than the transmitter coil dimension ...
Hui, SYR, Lee, CK, Zhong, W
core   +1 more source

Load-dependent power transfer efficiency for on-chip coils [PDF]

open access: yesAnalog Integrated Circuits and Signal Processing, 2021
AbstractThis paper presents a theory for the power transfer efficiency of printed circuit board coils to integrated circuit coils, with focus on load-dependence for low-power single-chip systems. The theory is verified with electromagnetic simulations modelled on a 350 nm CMOS process which in turn are verified by measurements on manufactured ...
Joakim Nilsson   +2 more
openaire   +2 more sources

Investigation of Improved Methods in Power Transfer Efficiency for Radiating Near-Field Wireless Power Transfer

open access: yesJournal of Electrical and Computer Engineering, 2016
A metamaterial-inspired efficient electrically small antenna is proposed, firstly. And then several improving power transfer efficiency (PTE) methods for wireless power transfer (WPT) systems composed of the proposed antenna in the radiating near-field ...
Hesheng Cheng, Huakun Zhang
doaj   +1 more source

Analysis of Capacitive Wireless Power Transfer

open access: yesIEEE Access, 2019
The analysis of capacitive wireless power transfer was conducted in a general manner. The circuit model of a capacitive wireless power transfer chain was presented.
Jan Kracek, Milan Svanda
doaj   +1 more source

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