Quasi-Static Modeling and Optimization of Two-Layer PCB Resonators in Wireless Power Transfer Systems for 110-kV Power Grid Online Monitoring Equipment

Fang, Yaoran; Qu, Jialong; Pong, M.H.; Lee, Chi Kwan; Hui, S. Y. Ron

doi:10.1109/tie.2021.3060659

Cited by 30 publications

(13 citation statements)

References 33 publications

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“…However, this characteristic can be utilized to form a natural resonator where discrete capacitors cannot be installed due to high electric fields [105]. The operational characteristic of such winding design is discussed in [106], where both proximity effect and inter-layer displacement current (leakage) takes place at the same time, as shown in Fig. 25.…”

Section: Considerations For Mega-hertz Resonator Constructionmentioning

confidence: 99%

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Wireless Power Transfer: A Paradigm Shift for the Next Generation

Hui

Yang

Zhang

2023

IEEE J. Emerg. Sel. Topics Power Electron.

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The first generation of wireless power transfer (WPT) standard Qi, launched in 2010, contains a wide range of transmitter and receiver designs with the aim of maximizing compatibility to attract many manufacturers to share the same standard. Such compatibility feature (i.e., interoperability) has not only attracted over 400 company members in the Wireless Power Consortium (WPC), but also facilitated a fast-growing wireless power market for a decade. The WPC is now expanding the scope of WPT applications to mid-power and high-power applications up to several kilowatts while the Society for Automobile Engineers also set the SAE standard for wireless charging of electric vehicles (EVs) up to tens of kilowatts. Without compromising compatibility, the authors share in this paper their views on the need for a paradigm shift from compatibility to optimal performance in terms of maximum energy efficiency for the entire charging process and minimum charging time. This paradigm change is imminent and important in view of the increasing power of WPT applications. Several enabling technologies essential to the paradigm shift will be addressed.

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Section: Considerations For Mega-hertz Resonator Constructionmentioning

confidence: 99%

“…[ [102][103][104][105][106] VII. CONCLUSION With the increasing power level and range of WPT applications, there is a need for paradigm shift to optimal performance to achieve high system efficiency and minimum charging time for entire charging process of the battery loads without compromising interoperability.…”

Section: Scenariomentioning

confidence: 99%

Wireless Power Transfer: A Paradigm Shift for the Next Generation

Hui

Yang

Zhang

2023

IEEE J. Emerg. Sel. Topics Power Electron.

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“…Furthermore, in the power transmission field, WPT technologies, including far-field methods like Magnetic Power Transfer (MPT) and Optical Power Transfer (OPT), offer long-distance energy transmission capabilities. These advancements successfully tackle challenges associated with transmission distance, supply range limitations, and the complexities of power line installation and maintenance in both urban and remote locales [22,23]. Lastly, WPT technology proves to be invaluable in extreme environments, such as underwater or in mining operations, ensuring the safety and operational efficiency of power supplies and electrical equipment under such conditions [24].…”

Section: Introductionmentioning

confidence: 99%

Research on Wireless Power Transfer Method for Intelligent Sensing Device of Non-Directly Buried Distribution Cables

He,

Zhang,

Zhou

et al. 2024

Electronics

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This paper presents a study on the impact of circuit parameters on the transmission of electrical energy in wireless power transfer systems designed for intelligent sensing devices within the urban electric power Internet of Things (IoT). Relying on the essential principles of resonant mutual inductance models, the paper conducts an analytical investigation into the phenomena of power-frequency splitting characteristics, efficiency-frequency splitting characteristics, and efficacy synchronization characteristics within wireless energy transmission technologies. The investigation includes a detailed analysis of a wireless power transfer system model operating at 100 kHz, delineating how varying circuit parameters influence the system’s efficiency. Via the utilization of graphical software and computational programming for simulation modeling, this research delved into the dynamics between key parameters such as equivalent load and coupling coefficient and their influence on distinct splitting phenomena. This rigorous approach substantiated the validity of the proposed power-frequency and efficiency-frequency splitting characteristics outlined in the study. Based on the analytical results, it is shown that selecting an appropriate equivalent load or utilizing impedance matching networks to adjust the equivalent load to a suitable size is crucial in consideration of the system’s output power, voltage withstand level, and transmission efficiency. The research findings provide a theoretical basis for the design of wireless power supply systems for non-directly buried cable front-end sensing devices.

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Section: Introductionmentioning

confidence: 99%

“…In recent years, research works on coreless PCB winding structures appear in medium-voltage and high-voltage gate drives [14], isolation transformers for multi-Mega-Hertz power supplies [15] and domino resonators for WPT applications [16]- [19]. The PCB winding structures are particularly important for domino WPT systems in the high-voltage (HV) insulation rod applications in HV transmission towers [19]. Power companies have confirmed that manual windings and discrete capacitors are not suitable for such HV applications because of the HV discharge between metallic terminals in discrete capacitors [20].…”

Section: Introductionmentioning

confidence: 99%

New Printed-Circuit-Board Resonators With High Quality Factor and Transmission Efficiency for Mega-Hertz Wireless Power Transfer Applications

Yücel

et al. 2023

IEEE Trans. Power Electron.

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Abstract-This paper presents a new printed-circuit-board (PCB) resonator structure suitable for mega-Hertz wireless power transfer (WPT) applications. Unlike previous PCB resonators that can form only parallel resonant structures, the new designs can easily be configurated as either parallel or series resonators. The novelty of the resonator structure involves the replacement of the PCB material with an airgap in the main magnetic flux path of the resonator structure and adoption of air-trenches between adjacent turns, therefore greatly reducing the inter-and intra-capacitance of the two printed windings and its associated PCB dielectric power loss. The natural resonant frequency can easily be tuned for mega-Hertz operation. A comparative study is conducted between conventional and new designs. The quality factor, resonant frequency, transmission efficiency and ac resistance of the new designs are significantly improved by over 435%, 236%, 137% and 41%, respectively over those of the conventional designs. An accurate distributed-circuit model of the new PCB resonator structures is also included and used in domino WPT system simulation. PCB resonators of the conventional and new designs are constructed to form domino WPT systems for practical evaluation. Both simulation and practical results are included to confirm the accuracy of the PCB resonator model and the advantages of the new resonator structure.

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Quasi-Static Modeling and Optimization of Two-Layer PCB Resonators in Wireless Power Transfer Systems for 110-kV Power Grid Online Monitoring Equipment

Cited by 30 publications

References 33 publications

Wireless Power Transfer: A Paradigm Shift for the Next Generation

Wireless Power Transfer: A Paradigm Shift for the Next Generation

Research on Wireless Power Transfer Method for Intelligent Sensing Device of Non-Directly Buried Distribution Cables

New Printed-Circuit-Board Resonators With High Quality Factor and Transmission Efficiency for Mega-Hertz Wireless Power Transfer Applications

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