Highly Flexible High-Efficiency Multiple-Resonant Wireless Power Transfer System Using a Controllable Inductor

Thenathayalan, Daniel; Park, Joung‐Hu

doi:10.1109/jestpe.2018.2867637

Cited by 17 publications

(8 citation statements)

References 25 publications

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“…Furthermore, the switchable passive compensation components used in the above methods are mostly nonlinear adjustments with a limited matching range and difficulty guaranteeing matching accuracy. To ensure precise compensation, the switches must be equipped with a detector and controller, despite applying the linear components [62][63][64]. Moreover, the potential communication delay and interruption issues will result in unreliability for tolerating the coil misalignment and load variations [65][66][67][68][69][70].…”

Section: Reconfigurable Topologiesmentioning

confidence: 99%

High-Order Compensation Topology Integration for High-Tolerant Wireless Power Transfer

et al. 2023

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Wireless power transfer (WPT) has been a promising way to transfer power wirelessly over certain distances through the mutual inductance (MI) of the magnetically coupled transmitter and receiver coils, providing significant benefits of convenience, safety, and feasibility to special occasions. The stable output and efficiency cannot be maintained due to the load variation and the inevitable misalignment between the magnetic couplers. High-order compensation topologies that are highly flexible in design due to more compensation elements are essential for the WPT to suppress the load variation and misalignment effects. However, due to core loss and thermal management, high-power-level and high-frequency inductor design have always been challenging for WPT systems. Space occupation and cost are other aspects to be considered for inductor design. Thus integrating these additional bulky inductors into the main coils has been a critical trial. As a result, the compensation topologies’ original input and output profiles will change or even disappear. This paper reviews the existing high-order compensation topologies and their integration principles and implementation for the WPT to obtain high misalignment tolerance. The design objectives and challenges of the integrated compensation topology in terms of misalignment tolerance capability are discussed. The relevant control systems to cope with coil misalignment and load variations are investigated. Challenges and future development of the high-tolerant WPT are discussed.

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Section: Reconfigurable Topologiesmentioning

confidence: 99%

High-Order Compensation Topology Integration for High-Tolerant Wireless Power Transfer

et al. 2023

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“…Another specification to be considered is the flexibility of the WPT systems for the use of customers. To tackle that problem, in [15], a controllable inductor was presented to extend the the soft switching region. Optimizing the area of the overall system is another important parameter.…”

Section: Introductionmentioning

confidence: 99%

A Literature Survey with the Focus on Magnetically Coupled Wireless Power Transfer Systems Developed for Engineering and Biomedical Applications

2023

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Wireless power transfer (WPT) is the transmission of electrical energy to other external/internal devices without the need for wire connection. Such a system is useful to power electrical devices as a promising technology for various emerging applications. The implementation of devices integrated with WPT alters the existing technologies and enhance the theoretical concept for future works. Over the last decade, various studies have been conducted on the applications of magnetically coupled WPT systems, where a general overview over such devices would be beneficial. Hence, this paper presents a comprehensive review over various WPT systems developed for commercially existing applications. The importance of WPT systems was first reported from the engineering point of view, followed by their uses in biomedical devices.

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“…Different with the LLC circuit, the multi-resonant converters are constituted by more passive elements introduced into the resonant network [18][19][20][21][22][23]. In such a way, more RFPs can be acquired, which contributes to more flexible output voltage regulation ability.…”

Section: Introductionmentioning

confidence: 99%

“…As a consequence, the excellent performances are harvested at the RFP, including the desirable soft‐switching features and reduced voltage stresses. Thenathayalan and Park [20] presented a third‐order series–series–parallel resonant converter. Owing to the higher order harmonic injection, the reactive circulating power within the resonant network is effectively constrained, whereas, for these two converters, the above outstanding performances are greatly compromised, when the switching frequency deviates from the RFP.…”

Section: Introductionmentioning

confidence: 99%

Family of DTMRC‐based DC–DC converters with an RZP

Han

Wang

Yang

et al. 2020

IET Power Electronics

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This study presents a novel family of dual-transformer multi-resonant DC-DC converters (DTMRCs) with a resonant zero point (RZP). The limitations of the conventional LLC resonant converter and its fundamental harmonic approximation (FHA) method are firstly discussed. On this basis, a unique RZP is combined with the dual-transformer architecture. As a result, both of the output voltage regulation capability and the over-current protection feature are promoted. Then, an extended describing modelling method is presented to improve the calculative accuracy of the FHA method. Moreover, by means of the appropriate placement of all three resonant frequencies, the fundamental and the third-order harmonic components are employed to transmit active power to the load simultaneously. The zero-voltage soft-switching characteristic is acquired for all the primaryside switches. Meanwhile, the preferable zero-current soft-switching feature is obtained for diodes both at the turn-on and turnoff moments. Therefore, the switching losses are significantly reduced for the proposed converters. Finally, with the employed SiC metal-oxide-semiconductor field-effect transistors, a 500-W half-bridge DTMRC prototype is built as an example, based on the P-type multi-resonant network. The experimental results demonstrate the validity and correctness of the theoretical analyses.

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Highly Flexible High-Efficiency Multiple-Resonant Wireless Power Transfer System Using a Controllable Inductor

Cited by 17 publications

References 25 publications

High-Order Compensation Topology Integration for High-Tolerant Wireless Power Transfer

High-Order Compensation Topology Integration for High-Tolerant Wireless Power Transfer

A Literature Survey with the Focus on Magnetically Coupled Wireless Power Transfer Systems Developed for Engineering and Biomedical Applications

Family of DTMRC‐based DC–DC converters with an RZP

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