Optimal Design of Quadrature-Shaped Pickup for Omnidirectional Wireless Power Transfer

Zhang, Z.; Zhang, B.; Tong, R.; Ai, W.; Chang, Sang‐Yoon; Wang, J.

doi:10.1109/tmag.2018.2847358

Cited by 11 publications

(5 citation statements)

References 20 publications

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“…In 2018, Z. Zhang and Z. Qi designed omnidirectional WPTS using three‐orthogonal‐transmitting‐coil topology. However, the complex modulation method limits the application of the multiple transmitting coils topology 8,9 . In the same year, Huilin An designed omnidirectional receiver with two coils to improve the anti‐deflection and anti‐offset properties.…”

Section: Introductionmentioning

confidence: 99%

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Long‐distance and anti‐disturbance wireless power transfer based on concentric three‐coil resonator and inhomogeneous electromagnetic metamaterials

Yuan

et al. 2023

Circuit Theory & Apps

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For wireless power transfer system (WPTS), the deflection of the resonant coil and the increase of the transmission distance will cause a sharp decline in transmission efficiency. This paper presents a novel long-distance and anti-deflection wireless power transfer based on concentric three-coil resonator and inhomogeneous electromagnetic metamaterials (IEM). First, the effective receiving area of the resonator is analyzed, and the anti-disturbance concentric three-coil resonator is designed quantitatively. Considering the magnetic field distribution generated by the transmitting coil, this paper proposes and designs IEM with three kinds of effective permeability, which is applied in different design area, respectively. Meanwhile, the finite-element-method simulation proves an improvement in magnetic field modulation and flux leakage control when WPTS with IEM is used. The experimental results show that, compared with the traditional one-coil to one-coil, the WPTS designed in this paper achieves an increase of 43% in the efficiency at a 90 deflection. Furthermore, the efficiency of WPTS with IEM is 17% and 7% higher than that of WPTS with homogeneous electromagnetic metamaterials (HEM) and without electromagnetic metamaterials. As a result, the design method in this paper can improve the anti-disturbance capability and increase the transmission distance and efficiency.

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Section: Introductionmentioning

confidence: 99%

“…However, the complex modulation method limits the application of the multiple transmitting coils topology. 8,9 In the same year, Huilin An designed omnidirectional receiver with two coils to improve the anti-deflection and anti-offset properties. When the deflection angle is pi/2, the efficiency of system was 70%.…”

mentioning

confidence: 99%

Long‐distance and anti‐disturbance wireless power transfer based on concentric three‐coil resonator and inhomogeneous electromagnetic metamaterials

Yuan

et al. 2023

Circuit Theory & Apps

View full text Add to dashboard Cite

show abstract

“…In refs. [16,17] designed omnidirectional WPTS using three-orthogonal-transmitting-coil topology. However, the modulation method of multiple transmitting coils topology is complex, which limited its application [16,17].…”

Section: Introductionmentioning

confidence: 99%

Design and Analysis of Omnidirectional Receiver with Multi-Coil for Wireless Power Transmission

Yuan

et al. 2022

Electronics

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In order to solve the misalignment problem of wireless power transmission, this paper designed and analyzed the omnidirectional receiver with multi-coil. The circuit models and transmission characteristics of the wireless power transfer system (WPTS) containing multi-coil were established. Besides, an accurate mutual inductance modelling method of the circular coil under different horizontal offset and angular deflection was presented. Based on the circuit models and the mutual inductance model, the relationship between transmission characteristics and the coil parameters were studied. Simultaneously, the design method which can synthetically and quantificationally consider the radius of the coil and the number of turns was proposed. Finally, an omnidirectional receiver with multi-coil using the quantificational model and transmission characteristics in different horizontal offset and angular deflection was designed. The transmission efficiency of three-coils-receiver system was up 12.3% higher than that of one-coil-receiver system and 4% higher than that of two-coils-receiver system when horizontal offset was between 0 cm and 30 cm. Similarly, when angular deflection was between 0 and π/2, the efficiency of three-coils-receiver system was up 73.25% higher than that of one-coil-receiver system and 1.6% higher than that of two-coils-receiver system.

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“…It is beneficial to WPT systems since the parking locations are usually inaccurate and the misalignment tolerance is crucial. When the misalignment occurs [7], the mutual inductance between transmitting coils and receiving coils may substantially change, resulting in the fluctuation of output power and the efficiency [8][9][10][11]. Nevertheless, the anti-misalignment ability can be improved by shaping the magnetic couplers.…”

Section: Introductionmentioning

confidence: 99%

Research on Optimization of Horizontal Omnidirectional Misalignment Tolerance of WPT Based on Double D Coupler

et al. 2022

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DD (Double D) coils have been researched and utilized due to their excellent misalignment tolerance. Here, a compound DD coupler sets for stationary wireless power chargers, which has significantly better anti-misalignment performance than single DD coupler in all directions, is proposed. The transmitting coils are composed of two parts of DD coils wound in opposite directions. Moreover, to obtain the low-level variation of mutual inductance between compound transmitting coils and receiving coils when offset occurs, a parameter optimization strategy of compensation coils is also proposed. With the properly designed parameters, the mutual inductance between transmitting and receiving coils could remain basically constant when misalignment occurs, which means that the efficiency and power remain relatively constant when offset occurs. Finally, both single DD coils and compound DD coils experimental prototypes are built to compare anti-misalignment ability performance. The results show that the proposed system is basically more stable and has a higher output power and more stable efficiency than that of unoptimized coupler during migration. In particular, with the employment of the antiparallel winding, the efficiency fluctuates from 85.5% to 85% when the 0.1-m offset in the X-axis and Y-axis occurs simultaneously. Moreover, the higher and basically more stable output power is also achieved.

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Optimal Design of Quadrature-Shaped Pickup for Omnidirectional Wireless Power Transfer

Cited by 11 publications

References 20 publications

Long‐distance and anti‐disturbance wireless power transfer based on concentric three‐coil resonator and inhomogeneous electromagnetic metamaterials

Long‐distance and anti‐disturbance wireless power transfer based on concentric three‐coil resonator and inhomogeneous electromagnetic metamaterials

Design and Analysis of Omnidirectional Receiver with Multi-Coil for Wireless Power Transmission

Research on Optimization of Horizontal Omnidirectional Misalignment Tolerance of WPT Based on Double D Coupler

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