Reconfigurable Magnetic Resonance-Coupled Wireless Power Transfer System

Dang, Zhigang; Cao, Yuan; Qahouq, Jaber A. Abu

doi:10.1109/tpel.2015.2422776

Cited by 86 publications

(41 citation statements)

References 32 publications

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“…Similarly, the input current to control signal transfer function can be derived as (19), the following transfer function can be obtained.…”

Section: Transfer Function Of Dc-dc Boost Stagementioning

confidence: 99%

“…Among these methods, the battery swapping concept is a good candidate to reduce recharging time and extend the driving range with low infrastructure cost. To deal with the challenges in the conventional battery swapping concept, a new distributed and enabled battery energy storage (WEDES) system and WEDES controller for EVs are presented in [1], which allows for fast and safe exchange/swapping of smaller and lighter battery modules with wireless power transfer (WPT) technology [18,19].…”

Section: Introductionmentioning

confidence: 99%

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Small-Signal Modeling and Analysis for a Wirelessly Distributed and Enabled Battery Energy Storage System of Electric Vehicles

Cao

Qahouq

2019

Applied Sciences

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This paper presents small-signal modeling, analysis, and control design for wireless distributed and enabled battery energy storage system (WEDES) for electric vehicles (EVs), which can realize the active state-of-charge (SOC) balancing between each WEDES battery module and maintain operation with a regulated bus voltage. The derived small-signal models of the WEDES system consist of several sub-models, such as the DC-DC boost converter model, wireless power transfer model, and the models of control compensators. The small-signal models are able to provide deep insight analysis of the steady-state and dynamics of the WEDES battery system and provide design guidelines or criteria of the WEDES controller. The derived small-signal models and controller design are evaluated and validated by both MATLAB®/SIMULINK simulation and hardware experimental prototype.

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“…Similarly, the input current to control signal transfer function can be derived as (19), the following transfer function can be obtained.…”

Section: Transfer Function Of Dc-dc Boost Stagementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Small-Signal Modeling and Analysis for a Wirelessly Distributed and Enabled Battery Energy Storage System of Electric Vehicles

Cao

Qahouq

2019

Applied Sciences

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“…To ensure strong magnetic coupling, the transfer distance should be very small in MI‐WPT . In comparison, previous research has demonstrated that the power in MR‐WPT can be transferred in a longer distance than that in MI‐WPT, and the transfer efficiency is higher than the far‐field technique . Therefore, the MR‐WPT has been widely applied in a wide range of applications such as smart house, electric vehicle charge, implantable biomedical devices, and many other fields .…”

Section: Introductionmentioning

confidence: 99%

Development of a novel spindle‐shaped coil‐based wireless power transfer system for frequency splitting elimination

Shi

Zhou

Shen

et al. 2020

Circuit Theory & Apps

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Summary To eliminate frequency splitting in wireless power transfer, a novel spindle‐shaped coil‐based wireless power transfer system is introduced and designed. Based on the equivalent circuit model, the transmission coefficient and the input impedance are calculated. A comparative analysis is performed between the traditional and the proposed systems. It is found that the frequency splitting is suppressed by utilizing spindle‐shaped transmitting and receiving coils in the proposed system because of the larger mutual inductance between the source coil (load coil) and transmitting coil (receiving coil) and the smaller mutual inductance between the transmitting and the receiving coils in comparison with the traditional system. In the overcoupled region, the transmission coefficient of the proposed system almost remains unchanged and keeps at a high value. The input impedance is characterized with high amplitude and small argument, which is beneficial for efficient power transfer. Experimental setup is established to validate the performance of the proposed wireless power transfer system. The results indicate that the proposed system is superior to the traditional one in eliminating the frequency splitting, which is well consistent with the simulation analysis.

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“…In order to improve the transmission efficiency, various adaptive resonance frequency methods have been proposed [12][13][14][15]. Different equivalent circuit models with asymmetrical structures were established to improve the transmission efficiency and the transmission distance [16][17][18]. By the impedance analysis of MCR-WPT, methods of suppressing or eliminating the frequency splitting phenomenon were subsequently discussed.…”

Section: Introductionmentioning

confidence: 99%

Frequency Splitting and Transmission Characteristics of MCR-WPT System Considering Non-Linearities of Compensation Capacitors

Liu

Wang

et al. 2020

Electronics

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The frequency splitting phenomenon and transmission characteristics have been research hotspots in the field of magnetically coupled resonance wireless power transfer (MCR-WPT). In this paper, non-linear dynamics theory was innovatively introduced into the research, and non-linear coupled transmission dynamics modelling of the MCR-WPT system was established considering the non-linearities of the compensation capacitor. The mechanism of the frequency splitting phenomenon of the MCR-WPT system was revealed through systematic mathematical analyses based on the modelling. The analysis results showed that the system usually has dual natural frequencies which are low resonance frequency and high resonance frequency. Based on non-linear dynamics theory, the transmission characteristics of the system with different non-linear parameters were discussed comprehensively in relation to the modelling. The results of the numerical simulations and theoretical analyses showed that non-linear parameters can cause the jumping phenomena with the output responses, and the output responses in the vicinities of the lower resonance frequencies were extremely sensitive to changes in the coupling coefficient. According to analyses of the linear and non-linear systems, the energy transmissions performed in the vicinity of the high resonance frequency had a wider working frequency band and a better transmission stability under non-linear conditions.

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Reconfigurable Magnetic Resonance-Coupled Wireless Power Transfer System

Cited by 86 publications

References 32 publications

Small-Signal Modeling and Analysis for a Wirelessly Distributed and Enabled Battery Energy Storage System of Electric Vehicles

Small-Signal Modeling and Analysis for a Wirelessly Distributed and Enabled Battery Energy Storage System of Electric Vehicles

Development of a novel spindle‐shaped coil‐based wireless power transfer system for frequency splitting elimination

Frequency Splitting and Transmission Characteristics of MCR-WPT System Considering Non-Linearities of Compensation Capacitors

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