Analysis of the Double-Layer Printed Spiral Coil for Wireless Power Transfer

Chen, Kainan; Zhengming, Zhao

doi:10.1109/jestpe.2013.2272696

Cited by 130 publications

(40 citation statements)

References 20 publications

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“…Magnetoplated wires are actually a copper wire whose circumference is plated with a magnetic thin film, thus the resistance caused by the proximity effect will decrease. Zhao et al [68,69] proposed a double-layer printed spiral coil structure as well as its theoretical model, which can utilize the space more effectively and provide a larger parasitic capacitance for lower resonant frequency applications.…”

Section: Optimization Design Of Circuit Topology Physical Structure mentioning

confidence: 99%

“…Transient analysis based on CT is sometimes more accurate than that based on CMT [18], thus CT is widely adopted. Various hot research spots, including system architectures [14][15][16][17], frequency splitting [11,24,26,28,48,49], impedance matching methods [20,26,27,[50][51][52][53][54][55][56][57][58][59][60], optimization designs [25,42,[61][62][63][64][65][66][67][68][69][70][71][72][73][74][75][76][77] and practical applications [37,[78][79][80][81]…”

Section: Introductionmentioning

confidence: 99%

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A Critical Review of Wireless Power Transfer via Strongly Coupled Magnetic Resonances

2014

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Strongly coupled magnetic resonance (SCMR), proposed by researchers at MIT in 2007, attracted the world's attention by virtue of its mid-range, non-radiative and high-efficiency power transfer. In this paper, current developments and research progress in the SCMR area are presented. Advantages of SCMR are analyzed by comparing it with the other wireless power transfer (WPT) technologies, and different analytic principles of SCMR are elaborated in depth and further compared. The hot research spots, including system architectures, frequency splitting phenomena, impedance matching and optimization designs are classified and elaborated. Finally, current research directions and development trends of SCMR are discussed.

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Section: Optimization Design Of Circuit Topology Physical Structure mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Critical Review of Wireless Power Transfer via Strongly Coupled Magnetic Resonances

2014

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“…For applications such as desktop peripherals charging [1]- [2], implantable biomedical devices charging [3]- [4], and electric vehicles charging [5]- [6], contactless power transfer (CPT) technology has some distinct advantages when compared to plug-in solutions, since they are convenient and not affected by dirt, dust, or water. Normally, compensation techniques are employed to alleviate the problem of energy transmission difficultly for CPT systems due to the large leakage inductances and reduced magnetizing inductance of the loosely coupled transformer.…”

Section: Introductionmentioning

confidence: 99%

Output current characterization of parallel-series/series compensated resonant converter for contactless power transfer

Hou

Chen

Wong

et al. 2015

2015 IEEE Applied Power Electronics Conference and Exposition (APEC)

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The characteristics of operating as an output voltage source of contactless power transfer (CPT) system have been widely researched. However, the operation as an output current source is more desirable for applications such as battery charging. This paper proposes a novel parallel-series/series (PS/S) compensation topology to achieve good output current controllability. The characterization of the input-to-output current gain and input impedance of the proposed PS/S compensated converter is performed in this paper. Two 60 W prototype converters, one with the PS/S compensation and the other with an S/S compensation are built to verify the correctness of the theoretical analysis and the effectiveness of the proposed compensation method.

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“…In 2007, the first mid-range WPT system using magnetic resonant coupling [1] was proposed by a research group from MIT. Since then, several research groups have been focusing on the development of magnetically coupled resonance WPT (MCR-WPT) systems using helical and spiral resonators [2]- [4], and a comprehensive performance comparison of MCR-WPT systems using different types of resonator coils is presented in [5].…”

Section: Introductionmentioning

confidence: 99%

A Planar Magnetically Coupled Resonant Wireless Power Transfer System Using Printed Spiral Coils

Jolani

Chen

2014

Antennas Wirel. Propag. Lett.

110

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A fully planar wireless power transfer (WPT) system via strongly coupled magnetic resonances is presented. In it, both the transmitter and the receiver are planarized with the use of coplanar printed spiral coils (PSCs) and a printed loop. An equivalent circuit model of the proposed planar WPT system is derived to facilitate the design, and a flowchart is provided for the optimization of the system with given size constraints. To realize high peak power transfer efficiency, the quality factor of individual loop or resonator, the mutual coupling between resonators, and the frequency splitting phenomenon of the system are analyzed in addition to the effect of the input impedance of the system on the transmission efficiency. Furthermore, parallel current paths are created by applying auxiliary strips to the backside of the substrates and connecting to the prime resonators using vias to decrease the resistance and to increase the quality factor of the PSC resonators, and this in turn further improves the transfer efficiency of the proposed planar WPT system. The measured results show that the proposed WPT system is able to provide a stable wireless power transfer with up to 81.68% efficiency at a distance of 10 cm. The planar structure and the high transfer efficiency make the proposed design a suitable candidate for wireless power transfer of small portable electronic devices.

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Analysis of the Double-Layer Printed Spiral Coil for Wireless Power Transfer

Cited by 130 publications

References 20 publications

A Critical Review of Wireless Power Transfer via Strongly Coupled Magnetic Resonances

A Critical Review of Wireless Power Transfer via Strongly Coupled Magnetic Resonances

Output current characterization of parallel-series/series compensated resonant converter for contactless power transfer

A Planar Magnetically Coupled Resonant Wireless Power Transfer System Using Printed Spiral Coils

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