Analysis of four-coil magnetic resonance coupling wireless power transfer system based on LCC-SSS compensation network

Chen, Zechi; Sun, Xiangdong; Ren, Biying; Wang, Zhixuan; Liu, Jiang

doi:10.1016/j.egyr.2023.01.002

Cited by 7 publications

(4 citation statements)

References 17 publications

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“…In this state, the voltage and current gains mirror those in (6), suggesting that the output power P Leq−r and transmission efficiency η r of the system are consistent with those in (7), respectively.…”

Section: In the Resonant Statementioning

confidence: 53%

“…One of the types of WPT, magnetic resonance wireless power transfer, was proposed by MIT's Kurs team in 2007 [5], and a large number of researchers subsequently invested in it [6,7]. They used four coils coupled with a medium distance to wirelessly light a 60 W light bulb through the strong magnetic resonance theory in physics combined with coupled-mode modeling theory.…”

Section: Introductionmentioning

confidence: 99%

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A Three-Coil Constant Output Wireless Power Transfer System Based on Parity–Time Symmetry Theory

Yue,

Yang,

2023

Applied Sciences

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In a three-coil wireless power transfer system with relay coils, the transmission efficiency and output power of the system decreases with changes in the adjacent coupling coefficients. Controlling the power of three-coil wireless power transfer systems is also a significant challenge. To solve these issues, a three-coil wireless power transfer system based on parity–time symmetry is proposed in this paper. First, a three-coil parity–time wireless power transfer system was modeled based on a circuit model. Then, the transmission and gain characteristics of the three-coil parity–time wireless power transfer system were analyzed. It was found that when the system is in a parity–time-exact region, it can maintain a constant transmission efficiency and output power, and its output power is independent of the coupling coefficient. In addition, based on the output characteristics of the three-coil parity–time wireless power transfer system, a power control method and a working range detection method were proposed to attain a constant power output. Finally, a three-coil parity–time wireless power transfer system was experimentally tested.

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Section: In the Resonant Statementioning

confidence: 53%

Section: Introductionmentioning

confidence: 99%

A Three-Coil Constant Output Wireless Power Transfer System Based on Parity–Time Symmetry Theory

Yue,

Yang,

2023

Applied Sciences

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“…However, superconducting materials have inherent limitations, including strict temperature requirements that prevent widespread adoption, and are still in the exploratory stage [17][18][19][20]. In terms of circuit optimization design, complex compensation networks have been employed to optimize the topology of the circuit, enabling stable output power despite changes in the coupling coefficient [21][22][23]. Furthermore, by adding impedance-matching circuits and feedback adjustment systems, the dynamic power adjustment capability of the system is effectively enhanced, providing good resistance to misalignment.…”

Section: Introductionmentioning

confidence: 99%

Design and Optimization of Coil for Transcutaneous Energy Transmission System

Wu,

Li,

Chen

et al. 2024

Electronics

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This article presents a coil couple-based transcutaneous energy transmission system (TETS) for wirelessly powering implanted artificial hearts. In the TETS, the performance of the system is commonly affected by the change in the position of the coupling coils, which are placed inside and outside the skin. However, to some extent, the influence of coupling efficiency caused by misalignment can be reduced by optimizing the coil. Thus, different types of coils are designed in this paper for comparison. It has been found that the curved coil better fits the surface of the skin and provides better performance for the TETS. Various types of curved coils have been designed in response to observed bending deformations, dislocations, and other coupling variations in the curved coil couple. The numerical model of the TETS is established to analyze the effects of the different types of coils. Subsequently, a series of experiments are designed to evaluate the resilience to misalignment and to verify the heating of the coil under conditions of severe coupling misalignment. The results indicated that, in the case of misalignment of the coils used in artificial hearts, the curved transmission coil demonstrated superior efficiency and lower temperature rise compared to the planar coil.

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“…M agnetic coupling resonant wireless power transfer (MCR-WPT) technology has higher energy transmission efficiency, higher security, and longer transmission distance than inductive power transfer [1]. It has become a research hotspot in WPT.…”

Section: Introductionmentioning

confidence: 99%

Design of Spatial Magnetic Field Measurement System and Experimental Study of Near-field Characteristics in Wireless Power Transfer System

Zeng,

Kang,

Shi

et al. 2023

PIER M

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Magnetic coupling resonant wireless power transfer (WPT) technology is widely used in a lot of power equipment because of its high efficiency and safety. Magnetic field is a key factor to study the energy transmission mechanism and transmission characteristics of WPT system. At present, the research on the WPT system spatial magnetic field mainly focuses on theoretical research and finite element simulation, with relatively little experimental research. This paper aims to establish an experimental platform for a WPT system, propose and design a magnetic field measurement system suitable for the WPT system, and conduct experimental research on the WPT system magnetic field with the measurement system. The near field region of the magnetic field is divided, and the experimental magnetic field distribution law is obtained using dimensionless and surface fitting methods. Finally, different models are obtained by surface fitting to characterize the distribution law of the experimental magnetic field. The results indicate that the dimensionless magnetic field intensity follows different forms of exponential distribution in different regions. The models are in good agreement with the actual distribution of the magnetic field, which can effectively reflect the variations in actual magnetic field intensity.

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Analysis of four-coil magnetic resonance coupling wireless power transfer system based on LCC-SSS compensation network

Cited by 7 publications

References 17 publications

A Three-Coil Constant Output Wireless Power Transfer System Based on Parity–Time Symmetry Theory

A Three-Coil Constant Output Wireless Power Transfer System Based on Parity–Time Symmetry Theory

Design and Optimization of Coil for Transcutaneous Energy Transmission System

Design of Spatial Magnetic Field Measurement System and Experimental Study of Near-field Characteristics in Wireless Power Transfer System

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