Analysis and Design of kHz-Metamaterial for Wireless Power Transfer

Wang, Huayun; Wang, Wenbin; Chen, Xuefen; Li, Qiong; Zhang, Zhen

doi:10.1109/tmag.2020.3001360

Cited by 23 publications

(12 citation statements)

References 15 publications

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“…2. Design approach of the multi-band metamaterial with low loss and high performance Low-frequency metamaterial [91] Metamaterial at 821.48 kHz: optimize the structure parameters to reduce the working frequency and extract the effective permeability.…”

Section: Novel Methods For Metamaterials Optimizationmentioning

confidence: 99%

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Development and prospects of metamaterial in wireless power transfer

Huang

Zhang

Cong

et al. 2021

IET Power Electronics

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As a unique group of advanced artificial materials, metamaterials have found many interesting applications in various devices due to the ability to control electromagnetic fields. The metamaterial provides the prospect of new opportunities for the wireless power transfer (WPT) system to improve efficiency and reduce magnetic flux density. This review paper evaluates the performance of the WPT system with metamaterial from both principles and functions aspects. The objectives of this review include: (1) to present the research process and bottlenecks of metamaterial in the WPT system; (2) to clarify the design solution and checking method of the metamaterial and (3) to identify the challenges and opportunities based on the functional of the WPT system integration with metamaterial. Therefore, the process on metamaterial design, working principle of metamaterial, optimal method, equivalent model, and experimental method are reviewed. The recent efforts of the WPT system with metamaterial in efficiency enhancement, misalignments, magnetic field reduction are illustrated. Finally, the challenges and prospects of metamaterial based on the WPT system are concluded.

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Section: Novel Methods For Metamaterials Optimizationmentioning

confidence: 99%

“…In [91], the frequency of the metamaterial is reduced from 10.28 MHz to 821.48 kHz, which is designed to be applied in high-power devices for drones. The magnetic field is concentrated in the area of the receiver by optimizing the parameters of the kHz metamaterial.…”

Section: Low-frequency Metamaterialsmentioning

confidence: 99%

Development and prospects of metamaterial in wireless power transfer

Huang

Zhang

Cong

et al. 2021

IET Power Electronics

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“…This method is used to improve PTE of the system to maximize the benefits of magnetic field repeaters 18 . In 19 – 21 , MRCWPT systems with the metamaterial are proposed. Some MRCWPT systems with repeaters and metamaterial are analyzed for applications in 22 .…”

Section: Introductionmentioning

confidence: 99%

Wireless power transfer system with enhanced efficiency by using frequency reconfigurable metamaterial

Shan

Wang

Cao

et al. 2022

Sci Rep

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The wireless power transfer (WPT) system has been widely used in various fields such as household appliances, electric vehicle charging and sensor applications. A frequency reconfigurable magnetic resonant coupling wireless power transfer (MRCWPT) system with dynamically enhanced efficiency by using the frequency reconfigurable metamaterial is proposed in this paper. The reconfigurability is achieved by adjusting the capacitance value of the adjustable capacitor connected in the coil of the system. Finite element simulation results have shown that the frequency reconfigurable electromagnetic metamaterial can manipulate the direction of the electromagnetic field of the system due to its abnormal effective permeability. The ultra-thin frequency reconfigurable metamaterial is designed at different working frequencies of 14.1 MHz, 15 MHz, 16.2 MHz, 17.5 MHz, 19.3 MHz, 21.7 MHz and 25 MHz to enhance the magnetic field and power transfer efficiency (PTE) of the system. Frequency reconfigurable mechanism of the system with the frequency reconfigurable metamaterial is derived by the equivalent circuit theory. Finally, further measurement which verifies the simulation by reasonable agreement is carried out. PTE of the system by adding the metamaterial are 59%, 73%, 67%, 66%, 65%, 60% and 58% at different working frequencies. PTE of the system with and without the metamaterial is 72% and 49% at the distance of 120 mm and the frequency of 15 MHz, respectively.

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“…Results show that a metamaterial has a good shielding effect on the MHz range, which has the advantages of adjustable frequency, lightweight, and array arrangement. As far as we know, some research studies have been conducted on low-frequency shielding [ 23 , 24 ]. It has been found that a metamaterial with a frequency of 821.48 kHz was designed [ 23 ].…”

Section: Introductionmentioning

confidence: 99%

“…As far as we know, some research studies have been conducted on low-frequency shielding [ 23 , 24 ]. It has been found that a metamaterial with a frequency of 821.48 kHz was designed [ 23 ]. However, the size of one metamaterial is large.…”

Section: Introductionmentioning

confidence: 99%

Matrix Metamaterial Shielding Design for Wireless Power Transfer to Control the Magnetic Field

et al. 2022

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A wireless power transfer (WPT) system can bring convenience to human life, while a leakage magnetic field around the system can be harmful to humans or the environment. Due to application limitations of aluminum and ferrite materials, it is urgent to find a new type of shielding material. This paper first proposes a detailed model and analysis method of the matrix shielding metamaterial (MSM), which is applied to the low-frequency WPT system in an electric vehicle (EV). The MSM is placed on the top and side of the EV system to shield the magnetic field from all positions. To explore its function, a theoretical analysis of the MSM is proposed to prove the shielding performance. The simulation modeling and the design procedure of the MSM are introduced. Moreover, the prototype model of the WPT system with the MSM is established. The experimental results indicate that the magnetic field is controlled when the MSM is applied on the top or side of the EV-WPT system. The proposed MSM has been successfully proven to effectively shield the leakage magnetic field in the WPT system, which is suitable for the kHz range frequency.

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Analysis and Design of kHz-Metamaterial for Wireless Power Transfer

Cited by 23 publications

References 15 publications

Development and prospects of metamaterial in wireless power transfer

Development and prospects of metamaterial in wireless power transfer

Wireless power transfer system with enhanced efficiency by using frequency reconfigurable metamaterial

Matrix Metamaterial Shielding Design for Wireless Power Transfer to Control the Magnetic Field

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