Effective wireless power transfer at low-frequency enabled by high-temperature superconducting coils

Dai, Peng; Zhou, Difan; Han, Shulun; Guo, Yanqun; Bai, Chuanyi; Cai, Chuanbing

doi:10.1016/j.physc.2021.1353952

Cited by 5 publications

(8 citation statements)

References 10 publications

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“…Assuming that the mutual inductance between the coupling inductors on both sides of the coil is M, and the resistance of the primary compensation inductor and coupling coil in series is R f and R p respectively, the resistance of the secondary coupling coil in series is R s , and the equivalent load of the secondary side is R eq . The system transmission efficiency of the S-S topology can be calculated by Equation (1).…”

Section: Topology Model and Analysismentioning

confidence: 99%

“…Wireless energy transmission technology is an inevitable requirement for the future development of electric vehicles. The magnetic coupling resonance system has developed rapidly in the wireless charging of electric vehicles because of its characteristics of large transmission distance and strong ability to be subject to external electromagnetic interference [1].…”

Section: Introductionmentioning

confidence: 99%

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An Efficiency Optimization Strategy for Electric Vehicle Wireless Energy Transmission System

Wang

Shi

Wang³

et al. 2023

J. Phys.: Conf. Ser.

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Magnetic coupling resonant wireless energy transmission technology has become an important research direction for electric vehicle wireless charging systems. This paper proposes an efficiency optimization strategy for the electric vehicle wireless energy transmission system based on LCL-S topology to improve the efficiency of electric vehicle magnetic coupling resonant wireless charging. This paper analyzes the optimization method of system efficiency based on LCL-S topology, establishes an experimental model in MATLAB/Simulink simulation software, and verifies it with the control variable method. The experiment shows that the efficiency optimization strategy based on the LCL-S topology proposed in this paper can effectively improve the system transmission efficiency and stabilize the transmission efficiency at a higher level faster.

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Section: Topology Model and Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An Efficiency Optimization Strategy for Electric Vehicle Wireless Energy Transmission System

Wang

Shi

Wang³

et al. 2023

J. Phys.: Conf. Ser.

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“…In conventional WPT which is based on magnetically coupled resonance, frequency of an alternating current (AC) power supply is significant factor, and it is determined by distance of inductors [19]. Therefore, when WPT for electric vehicles is treated, we must notice that the optimal frequency which gives high power transmission shifts constantly.…”

Section: Introductionmentioning

confidence: 99%

Experimental review of an improving system on wireless power transfer via auto tuning of frequency

Yamaguchi¹,

Okamura²,

Terada³

et al. 2023

IJECE

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<span lang="EN-US">Wireless power transfer for electric vehicles is focused because these vehicles cannot run long distance without frequently charging. If these vehicles are charged from outside wirelessly, for example an alternating current (AC) power supply is embed under road, the problem is going to be solved. However, efficiency of wireless power transfer depends on various factors, therefore many contrivances should be considered to realize optimal transfer. In this paper, we focused on frequency of inverter, and created auto tuning system of it in response to the distance of inductors. On this system, frequency was modified automatically by a microcontroller and sensor at the same time position of a load changed. Finally, we confirmed that voltage of light emitting diode (LED) was improved by utilizing our system compared with non-tuning frequency.</span>

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“…In recent years, research has been conducted to establish magnetic resonance radio energy transmission systems using high-quality factor superconducting coils as resonant coils, which improves the energy transmission performance of the systems. The research on high-temperature superconducting WPT systems has mainly focused on coil structure design and transmission efficiency [5][6][7][8][9][10]. Ref.…”

Section: Introductionmentioning

confidence: 99%

Spatial Azimuthal Misalignment Characteristics of High-Temperature Superconducting Wireless Power Transmission Systems

et al. 2023

Self Cite

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Magnetically coupled resonant wireless power transmission technology (WPT) based on high-temperature superconducting (HTS) coils has gained wide popularity due to its low impedance and high-quality factor Q value characteristics. This technology has greatly improved the energy transfer performance of wireless power transmission (WPT) systems. However, practical applications of conventional WPT, such as wireless charging of autonomous underwater vehicles at mooring points, often encounter spatial misalignment issues due to the complex ocean environment and ocean currents. Nonetheless, few studies have investigated the spatial misalignment of HTS WPT systems, particularly the angular misalignment. This paper presents a solution to address this problem by constructing magnetically coupled resonant wireless energy transmission systems based on HTS coils and copper coils. The study analyzes the relationship between the transmission efficiency of the WPT system and the received power of the load with respect to the spatial orientation of the coil. The performance of the superconducting coil and copper coil WPT systems is compared. The experimental results demonstrate that, under the same spatially misaligned conditions, the WPT system using HTS coils can significantly improve the transmission efficiency and load power compared to the conventional copper WPT system. Moreover, simultaneous adjustment of the lateral misalignment distance and different orientation deflection angles can improve the transmission efficiency and smooth load output power of the high-temperature superconducting WPT system.

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Effective wireless power transfer at low-frequency enabled by high-temperature superconducting coils

Cited by 5 publications

References 10 publications

An Efficiency Optimization Strategy for Electric Vehicle Wireless Energy Transmission System

An Efficiency Optimization Strategy for Electric Vehicle Wireless Energy Transmission System

Experimental review of an improving system on wireless power transfer via auto tuning of frequency

Spatial Azimuthal Misalignment Characteristics of High-Temperature Superconducting Wireless Power Transmission Systems

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