Analysis on normalized distance and scalability in designing wireless power transfer

Sampath, J.P.K.; Alphones, Arokiaswami; Kenneth, L.Y.Y.; Vilathgamuwa, D.M.

doi:10.1109/wow.2015.7132849

Cited by 15 publications

(9 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To increase the inductance, Mizuno et al proposed a magnet plated copper wire with a magnetic thin layer coated around the circumference to boost inductance; and the resistance due to proximity effect is lowered because eddy current loss is minimized [112]. Unlike in EV WPT system, space limitation is a major design constraint in some applications such as medical implants, thereby furthering the need to optimize the coil design [113]. Some of the coil parameters that affect the system performance include; ratio of coil diameter to air-gap (R:L); coil geometry, Q-factor etc.…”

Section: Coil Designsmentioning

confidence: 99%

Overview and Advancements in Electric Vehicle WPT Systems Architecture

Adewuyi¹

2022

Power Electronics, RF, and Microwave Engineering [Working Title]

View full text Add to dashboard Cite

Wireless Power Transfer (WPT) system is a rapidly evolving technology with vast potentials in consumer electronics, electric vehicles, biomedicals and smart grid applications such as Vehicle to Grid (V2G). Hence, this article is devoted to present an overview of recent progress in WPT with specific interest in magnetic resonance WPT and its system architectures such as compensation topologies, inputs and outputs, as well as coil structure. The strengths, drawbacks and applications of the basic compensations (SS, SP, PS, PP) and hybrid compensations (LCC and LCL) were presented and compared. Although primary parallel compensations perform well at low mutual inductance, they are rarely used due to large impedance and dependence of coefficient coupling on the load. Hence, the need for extra-compensations forming hybrid topologies, such as LCC, LCL, which usually choice topologies for dynamic WPT application or V2G application.

show abstract

Section: Coil Designsmentioning

confidence: 99%

Overview and Advancements in Electric Vehicle WPT Systems Architecture

Adewuyi¹

2022

Power Electronics, RF, and Microwave Engineering [Working Title]

View full text Add to dashboard Cite

show abstract

“…Pantic and Lukic give some experimental comparisons between the solenoidal coil and spiral coil [84]. Sampath et al [79] and Nguyen et al [85] propose an experimental analysis of different types of flat (or spiral) coil design. The power transfer and transmission link efficiency of the spiral coil can be improved by tuning three geometric parameters which have an effect on the radiation patterns, namely inner radius, outer radius, and turn number.…”

Section: Coil Designmentioning

confidence: 99%

“…The coil size is one important parameter in MRC WPT system design. A major design constraint for the coil is the space limitation [79], e.g. RX coil size for biomedical implants should be small, while the TX coil size can be large.…”

Section: Wireless Ev Chargingmentioning

confidence: 99%

Survey on magnetic resonant coupling wireless power transfer technology for electric vehicle charging

Mou

Gladwin

Zhao

et al. 2019

IET Power Electronics

View full text Add to dashboard Cite

2019) 'Survey on magnetic resonant coupling wireless power transfer technology for electric vehicle charging. ', IET power electronics.,12 (12). pp. 3005-3020.The full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-prot purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details.Abstract: Wireless Power Transfer technology (WPT) makes it possible to supply power through an air-gap, without the need for current-carrying wires. One important technique of WPT technology is magnetic resonant coupling (MRC) WPT. Based on the advantages of MRC WPT, such as safety and high power transfer efficiency over a long transmit distance, there are many possible applications of MRC WPT. This paper provides a comprehensive, state-of-the-art review of the MRC WPT technology and wireless charging for electric vehicle (EV). A comparative overview of MRC WPT system design which includes a detailed description of the prototypes, schematics, compensation circuit topologies (impedance matching), and international charging standards. In addition, this paper provides an overview of wireless EV charging including the static wireless EV charging and the dynamic wireless EV charging, which focuses on the coil design, power transfer efficiency, and current research achievement in literature.

show abstract

“…Besides, the power transfer amount and the maximum outer radius should also be considered in the design of a WPT system for practical purpose, which is also lacked in this paper. Reference [12] studied the effects of coil turns and outer radius on the coil quality factor and the power transfer efficiency and it is shown that the larger the coil is, the higher system efficiency will be. Additionally, tight-wound coils can also contribute to improving the system efficiency, but for different coil designs, other system parameters didn't remain constant in the experiments, i.e., coil-to-coil distance, load resistance, and the power transfer capacity was also not considered in the analysis.…”

Section: Introductionmentioning

confidence: 99%

Study of the Circular Flat Spiral Coil Structure Effect on Wireless Power Transfer System Performance

2018

View full text Add to dashboard Cite

This paper analyses the relationship between the coil design parameters and the system performance, including power transfer efficiency and amount, when circular flat spiral coils are adopted in a wireless power transfer (WPT) system. Coil design variables including outer radius, inner radius, channel width and coil turns are thoroughly studied to improve the system performance with a limited maximum outer radius for practical purposes. A two-coil WPT system has been built to verify the analysis, and the experimental results show good consistency with the theoretical calculations and simulation results, which show that the coil design parameters have a significant impact on the system performance, even with the same coil size. In the experiments, the coil-to-coil distance is 150 mm, the maximum coil outer radius is limited in 300 mm, and the DC input voltage and the load resistance are 100 V and 5 Ω, respectively. When the coils are tightly-wound in the most traditional way to maximize the coil size, the coil-system efficiency is 62.6% with only 4.5 W load power. In contrast, the efficiency optimized coil can improve the coil-system efficiency to 91.2% with the outer radius stayed the same. Besides, when the power transfer efficiency and amount are considered simultaneously, the system can achieve 1279 W load power with 85.94% coil-system efficiency.

show abstract

Analysis on normalized distance and scalability in designing wireless power transfer

Cited by 15 publications

References 13 publications

Overview and Advancements in Electric Vehicle WPT Systems Architecture

Overview and Advancements in Electric Vehicle WPT Systems Architecture

Survey on magnetic resonant coupling wireless power transfer technology for electric vehicle charging

Study of the Circular Flat Spiral Coil Structure Effect on Wireless Power Transfer System Performance

Contact Info

Product

Resources

About