Journal ArticleDOI
Analysis of the Double-Layer Printed Spiral Coil for Wireless Power Transfer
Kainan Chen,Zhengming Zhao +1 more
TLDR
In this paper, the double-layer printed spiral coil is used, which could fully take advantage of the limited space and make larger parasitic capacitance for lower resonant frequency, and the circuit model with consideration of parasitic parameters and high-frequency losses is built.Abstract:
As a critical part of the wireless power transfer system via strongly coupled magnetic resonances, the resonant coils must be cautiously designed for the specific resonant frequency and high quality factor. There are some issues needed to be considered and studied in the coil design, such as the coil structure, parasitic parameter extraction, and optimizing. In this paper, the double-layer printed spiral coil is used, which could fully take advantage of the limited space and make larger parasitic capacitance for lower resonant frequency. Using the simplified partial element equivalent circuit method and finite element method, the circuit model with consideration of parasitic parameters and high-frequency losses is built, and the impedance characteristic of coil is simulated, which coincides well with the measurement result. In addition, several elements affecting the high-frequency loss, including the skin effect, proximity effect, and dielectric loss, are discussed for reaching higher quality factor, which is critical for the power transfer system.read more
Citations
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Journal ArticleDOI
Wireless Power Transfer for Electric Vehicle Applications
Siqi Li,Chunting Chris Mi +1 more
TL;DR: In this paper, the authors reviewed the technologies in the wireless power transfer (WPT) area applicable to electric vehicle (EV) wireless charging, and the obstacles of charging time, range, and cost can be easily mitigated.
Journal ArticleDOI
A Critical Review of Wireless Power Transfer via Strongly Coupled Magnetic Resonances
TL;DR: In this paper, the advantages of SCMR are analyzed by comparing it with the other wireless power transfer (WPT) technologies, and different analytic principles of SCM are elaborated in depth and further compared.
Journal ArticleDOI
Analysis and Control of Series/Series-Parallel Compensated Resonant Converter for Contactless Power Transfer
TL;DR: In this article, a series/series-parallel (S/SP) compensation topology was proposed to achieve both high efficiency and good output controllability in contactless power transfer systems.
Journal ArticleDOI
Wireless power transfer inspired by the modern trends in electromagnetics
TL;DR: This review is focused on the description of distinctive implementations of this technology inspired by the modern trends in electrodynamics and argues that metamaterials and meta-atoms are powerful tools to improve the functionalities and to obtain novel properties of the systems.
Journal ArticleDOI
Design of a Universal Inductive Charger for Multiple Electric Vehicle Models
Nan Liu,Thomas G. Habetler +1 more
TL;DR: In this paper, the design process of a universal inductive charger (UIC) for EVs is presented, which is capable of adaptively providing a constant or controllable charging voltage to various EVs, with a wide range of varied magnetic coupling between the transmitting and receiving coils.
References
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Journal ArticleDOI
Wireless Power Transfer via Strongly Coupled Magnetic Resonances
Andre B. Kurs,Aristeidis Karalis,Robert Moffatt,John D. Joannopoulos,Peter H. Fisher,Marin Soljacic +5 more
TL;DR: A quantitative model is presented describing the power transfer of self-resonant coils in a strongly coupled regime, which matches the experimental results to within 5%.
Journal ArticleDOI
Analysis, Experimental Results, and Range Adaptation of Magnetically Coupled Resonators for Wireless Power Transfer
TL;DR: A circuit model is presented along with a derivation of key system concepts, such as frequency splitting, the maximum operating distance (critical coupling), and the behavior of the system as it becomes undercoupled, including the introduction of key figures of merit.
Journal ArticleDOI
Simple accurate expressions for planar spiral inductances
TL;DR: In this paper, the authors present simple and accurate expressions for the DC inductance of square, hexagonal, octagonal, and circular spiral inductors, and evaluate the accuracy of their expressions, as well as several previously published inductance expressions, in two ways: by comparison with three-dimensional field solver predictions and by contrast with their own measurements, and also previously published measurements.
Journal ArticleDOI
Equivalent Circuit Models for Three-Dimensional Multiconductor Systems
TL;DR: In this paper, partial element equivalent circuits (PEECs) are derived from an integral equation to establish an electrical description of the physical geometry of the PEECs, which are general in that they include losses.