Efficiency Enhancement of Wireless Power Transfer System Using MNZ Metamaterials

Shaw, Tarakeswar; Roy, Aritra; Mitra, Debasis

doi:10.2528/pierc16081101

Cited by 13 publications

(6 citation statements)

References 18 publications

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“…in the host media [60], [64]. A 180 × 180 mm 2 one-sided 3 × 3 MM slab based on a 60 × 60 mm 2 µ-negative-zero (µNZ ) unit cell has been exploited in [65] to enhance the PTE of a WPT system. Performance analysis of the system with the proposed MM slab results in a PTE of 55.3%, indicating an improvement of 15.7% compared to a wireless power transfer system without the MMs.…”

Section: Literature Reviewmentioning

confidence: 99%

Critical Review of Recent Advancement in Metamaterial Design for Wireless Power Transfer

Adepoju

Bhattacharya

Sanyaolu³

et al. 2022

IEEE Access

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With increasing penetration of wireless charging technologies comes an ever-rising demand for wireless power transfer (WPT) structures that demonstrate high power transfer and power transfer efficiency (PTE), especially over wide transfer distance. The concern with reliability in adopting wireless charging technologies in consumer and industrial applications (including mobile chargers and dynamic wireless charging of electric vehicles, EVs) stems from fluctuating output power and low power transfer efficiency (PTE). Moreover, the inherently high resonant frequency of existing metamaterial (MM)-based WPT designs imposes a high switching stress on power semiconductors and passive components, resulting in high power dissipation, especially in high power applications. This manuscript presents a critical survey of recent studies and developments in MM-based WPT systems. First, the fundamental concepts and classification of WPT technologies based on magnetic resonant coupling (MRC), inductive coupling etc. are discussed. Going forward, key MM design considerations, including resonance operating frequencies, effective permittivity ( r ), effective permeability (µ r ), numerical modeling, equivalent circuit representations, and 3D fabrication technologies are widely analyzed and critiqued. Additionally, the performance enhancing effect of integrating different MM designs with existing WPT systems are explicitly discussed. Finally, the technical challenges associated with the resonant operating frequencies of MM, miniaturization of MM design footprint, and 3D prototyping are investigated while also presenting potential solutions.INDEX TERMS Wireless power transfer (WPT), metamaterial (MM), power transfer efficiency (PTE), resonant frequency, transmit power, effective permeability, electric vehicle (EV).

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Section: Literature Reviewmentioning

confidence: 99%

Critical Review of Recent Advancement in Metamaterial Design for Wireless Power Transfer

Adepoju

Bhattacharya

Sanyaolu³

et al. 2022

IEEE Access

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“…The study of metamaterial properties is growing significantly due to their unique electromagnetic properties that are not available in natural materials. The examples of these unique characteristics are double negative (DNG) refractive index metamaterials, 3,4 epsilon near zero (ENZ) metamaterials, 5 and mu near zero metamaterials (MEZ) 6 . These metamaterials can be synthesized by establishing proper implications in periodic shapes into a hosting medium 7 …”

Section: Introductionmentioning

confidence: 99%

“…The examples of these unique characteristics are double negative (DNG) refractive index metamaterials, 3,4 epsilon near zero (ENZ) metamaterials, 5 and mu near zero metamaterials (MEZ). 6 These metamaterials can be synthesized by establishing proper implications in periodic shapes into a hosting medium. 7 Many research efforts are exerted in order to design a proper antenna element with suitable gain which can be employed in a 5G MIMO array.…”

Section: Introductionmentioning

confidence: 99%

Metamaterial inspired LPDA MIMO array for upper band 5G applications

Shehata

Elboushi

Hindy

et al. 2022

Int J RF Mic Comp-Aid Eng

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In this paper, an enhanced upper band 5G multiple-input multiple-output (MIMO) array is presented. The proposed array is based on a wide band LPDA antenna loaded with epsilon near zero (ENZ) index metamaterial. The metamaterial cells result in more than 3 dBi gain enhancement. In addition, multiples metamaterial cells arrangements are studied including straight, concave, and convex rows. The array covers a wideband of MMW frequencies extending from 26 up to 39 GHz. The LPDA antenna element design consists of alternating five arms printed on RO5880 substrate. All of the dipole arms are uniformly placed along parallel microstrip feeding transmission lines on both sides of the substrate. The main feeding line is placed over a partial ground plane at the backside of the substrate. The MIMO-LPDA array exhibits stable radiation characteristics over the operating band. A maximum realized gain of 11 dBi is achieved at 36 GHz for a single element radiator. In addition, essential MIMO performance indicators such as Envelope Correlation Coefficient (ECC), Diversity Gain (DG), and Channel Capacity Loss (CCL) are examined and determined to fulfill the needed standard of ECC, DG, and CCL. The fabricated prototypes of both the single antenna element and the MIMO array show very good agreement with simulated results.

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“…Wireless power transfer (WPT) methods for electric vehicles (EVs) are receiving increasing attention in international research community due to their convenience and high efficiency [1][2][3][4]. However, in practice, inevitable lateral and vertical misalignments between the transmission coil and the receiving coil lead to variations of the mutual inductance between the transmitting coil and receiving coil.…”

Section: Introductionmentioning

confidence: 99%

Design and Optimization of Quasi-Constant Mutual Inductance for Asymmetric Two-Coil Wireless Power Transfer System With Lateral Misalignments

Li¹,

Cheng²,

Yi³

et al. 2018

PIER M

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Magnetic resonant wireless power transfer (WPT) is an emerging technology that may create new applications for wireless power charging. However, the output voltage fluctuations resulting from lateral misalignments are main obstructing factors for promoting this technology. In this paper, an asymmetric two-coil WPT system is presented. The mathematical model of the proposed topology with lateral misalignments is built based on equivalent circuit method. The expression of the output voltage is then derived by solving the system equivalent equations. In addition, a method of optimization parameters is proposed. The mutual inductance between the receiving coil and transmission coil is nearly constant by the proposed method with lateral misalignments. Therefore, the output voltage can be kept nearly constant. The asymmetric two-coil WPT system via magnetic resonance coupling is designed. Simulated and experimental results validating the proposed method are given.

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Efficiency Enhancement of Wireless Power Transfer System Using MNZ Metamaterials

Cited by 13 publications

References 18 publications

Critical Review of Recent Advancement in Metamaterial Design for Wireless Power Transfer

Critical Review of Recent Advancement in Metamaterial Design for Wireless Power Transfer

Metamaterial inspired LPDA MIMO array for upper band 5G applications

Design and Optimization of Quasi-Constant Mutual Inductance for Asymmetric Two-Coil Wireless Power Transfer System With Lateral Misalignments

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