A New Technique for Reducing Size of a WPT System Using Two-Loop Strongly-Resonant Inductors

Rozman, Matjaz; Fernando, Michael; Adebisi, Bamidele; Rabie, Khaled M.; Collins, Tim; Kharel, Rupak; Ikpehai, Augustine

doi:10.3390/en10101614

Cited by 9 publications

(3 citation statements)

References 38 publications

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“…Among other things, an increasing number of mobile devices processing huge amounts of data [7,8] is directly connected with their computing power and number of sensors. Nowadays, WPT is considered to be an alternative method of charging wireless devices, where a pair of coils [7,9] (accompanied with additional intermediate coils [10,11]) or an array of coils [12][13][14] is utilized. Multi-coil systems operate at high frequencies (f ≥ 1 MHz) [13,15], and in some cases, power transfer is assisted by using metamaterial structures [14].…”

Section: Introductionmentioning

confidence: 99%

Numerical and Circuit Modeling of the Low-Power Periodic WPT Systems

2020

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This article presents a method for analysis of the low-power periodic Wireless Power Transfer (WPT) system, using field and circuit models. A three-dimensional numerical model of multi-segment charging system, with periodic boundary conditions and current sheet approximation was solved by using the finite element method (FEM) and discussed. An equivalent circuit model of periodic WPT system was proposed, and required lumped parameters were obtained, utilizing analytical formulae. Mathematical formulations were complemented by analysis of some geometrical variants, where transmitting and receiving coils with different sizes and numbers of turns were considered. The results indicated that the proposed circuit model was able to achieve similar accuracy as the numerical model. However, the complexity of model and analysis were significantly reduced.

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Section: Introductionmentioning

confidence: 99%

Numerical and Circuit Modeling of the Low-Power Periodic WPT Systems

2020

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“…Software/Tool Description [85,113,114,116] Keysight's advanced design system (ADS) Used for smith chart analysis, circuit simulations especially good for high frequencies in MHz, also can be used for low frequencies [112,[117][118][119] MATLAB/Simulink Used for circuit simulations, MATLAB used for graphs, calculations using equations in MATLAB and optimization algorithm implementation. [24,60,118] PSpice simulation software Used for circuit simulations [97,105,120,121] LTspice Used for circuit simulations [122] Ansys-Maxwell &/or Simplorer Simplorer is used for circuit simulations.…”

Section: Refmentioning

confidence: 99%

A Review of Inductive Power Transfer: Emphasis on Performance Parameters, Compensation Topologies and Coil Design Aspects

Rehman,

Mirsaeidi,

Nor

et al. 2023

IEEE Access

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Wireless Power Transfer (WPT) using inductive and magnetic resonance coupling developing at enormous pace due to its diversity of applications, such as electric vehicles (EV), biomedical implants, consumer electronics, robotics and so on. This review presents historical background together with applications of low power and high power WPT systems. The review emphasizes on two main design facets of WPT system including compensation networks and coil structure. All up-to-date compensation topologies are comprised in the review along with latest coil designs. Load-independent operation using compensation topologies is also reviewed. The review provides all available methods to analyze the circuit structure of WPT system theoretically and it also outlines the software used for circuit simulations as well as coil design. This paper is diverse from existing reviews in a pattern that it presents not only complete critical intuition on the vital design features, recent advancements, contemporary problems and challenges of low power and high power WPT systems but also provides the available theoretical methods as well as software to analyze the WPT system in wholesome. This paper will enrich the knowledge of the researchers to investigate the WPT systems using existing techniques and to solve the present-day design glitches of WPT systems

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“…Accordingly, a charging power of 5.49 W, with 6 cm between the transmitting and receiving coils, is sufficient to charge the battery of the WSN at a remote site. Rozman et al [19] presented a novel method, featuring a resonant two-loop WPT system. A compensation inductor, combined with two-loop coils (i.e., receiver and transmitter), was proposed to reduce the sizes of the two coils significantly.…”

Section: Related Workmentioning

confidence: 99%

Single-Tube and Multi-Turn Coil Near-Field Wireless Power Transfer for Low-Power Home Appliances

et al. 2018

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Single-tube loop coil (STLC) and multi-turn copper wire coil (MTCWC) wireless power transfer (WPT) methods are proposed in this study to overcome the challenges of battery life during low-power home appliance operations. Transfer power, efficiency, and distance are investigated for charging mobile devices on the basis of the two proposed systems. The transfer distances of 1–15 cm are considered because the practicality of this range has been proven to be reliable in the current work on mobile device battery charging. For STLC, the Li-ion battery is charged with total system efficiencies of 86.45%, 77.08%, and 52.08%, without a load, at distances of 2, 6, and 15 cm, respectively. When the system is loaded with 100 Ω at the corresponding distances, the transfer efficiencies are reduced to 80.66%, 66.66%, and 47.04%. For MTCWC, the battery is charged with total system efficiencies of 88.54%, 75%, and 52.08%, without a load, at the same distances of 2, 6, and 15 cm. When the system is loaded with 100 Ω at the corresponding distances, the transfer efficiencies are drastically reduced to 39.52%, 33.6%, and 15.13%. The contrasting results, between the STLC and MTCWC methods, are produced because of the misalignment between their transmitters and receiver coils. In addition, the diameter of the MTCWC is smaller than that of the STLC. The output power of the proposed system can charge the latest smartphone in the market, with generated output powers of 5 W (STLC) and 2 W (MTCWC). The above WPT methods are compared with other WPT methods in the literature.

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A New Technique for Reducing Size of a WPT System Using Two-Loop Strongly-Resonant Inductors

Cited by 9 publications

References 38 publications

Numerical and Circuit Modeling of the Low-Power Periodic WPT Systems

Numerical and Circuit Modeling of the Low-Power Periodic WPT Systems

A Review of Inductive Power Transfer: Emphasis on Performance Parameters, Compensation Topologies and Coil Design Aspects

Single-Tube and Multi-Turn Coil Near-Field Wireless Power Transfer for Low-Power Home Appliances

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