Analysis and experimental results of frequency splitting of underwater wireless power transfer

Niu, Wangqiang; Gu, Wenjin; Chu, Jianxin

doi:10.1049/joe.2017.0194

Cited by 23 publications

(6 citation statements)

References 23 publications

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“…It is also possible to use for the WPT by the resonance and inductive methods from renewable energy sources [48] used the PS topology, [150], [151] -a contactless underwater power delivery.…”

Section: A Application Of Compensation Topologiesmentioning

confidence: 99%

Compensation Topologies in IPT Systems: Standards, Requirements, Classification, Analysis, Comparison and Application

et al. 2019

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Wireless power transfer devices are becoming more relevant and widespread. Therefore, an article is devoted to a review, analysis and comparison of compensation topologies for an inductive power transfer. A new classification of topologies is developed. A lot of attention is paid to the problems of the physical fundamentals of compensation work, standards, safety, and five main topology requirements. It is determined, that topologies with the series primary compensating are the most effective in the IPT for charging devices among the four classical schemes. The series-parallel solution is recommended in case of the low output voltage, minimum size of a secondary side coil is achievable. The series-series solution does not depend on the magnetic coupling coefficient and the load on the resonance frequency. For the convenience of displaying and understanding the information, the comparison results are listed in the tables, graphs and dependencies. The main suitable topologies for a certain application are defined. The given conclusions provide a ''one-stop'' information source and a selection guide on the application of compensation topologies both in terms of devices and in terms of power level that is the main value of this paper. During literature analysis and recent trends in the market for wireless power transmission devices, the main possible further ways of developing topologies are underlined. First of all, it concerns increasing the frequency of resonance of compensation topologies, the use of multilevel / multi-pulse / multicoils structures, the study of existing high-frequency semiconductors and the development of the semiconductor and magnetic materials.

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Section: A Application Of Compensation Topologiesmentioning

confidence: 99%

Compensation Topologies in IPT Systems: Standards, Requirements, Classification, Analysis, Comparison and Application

et al. 2019

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“…The switching frequency must be lower than one tenth of the self-resonant frequency otherwise lower number of turn must be adopted. Step 3 Calculate corresponding compensation capacitance With the switching frequency kept the same as the resonance frequency the corresponding compensation capacitance can be calculated by equation (2). After this step the parameters of resonant tank with its winding configuration can be decided.…”

Section: Optimal Parameter Design For 200wmentioning

confidence: 99%

“…Nevertheless, it is of great difficulty to replace the batteries or use plug-in battery chargers for the AUVs to prolong the operation time, unlike terrestrial vehicles because of operating costs as well as human safety issues. Currently, the emergence of wireless power transfer (WPT) offers a better choice for transmitting power to the AUVs [1,2,3,4].With the WPT technology for the underwater conditions, several benefits can be achieved including lower operating costs due to corrosion and short circuit, improving operational safety and considerably reducing manual risks. Nowadays, the WPT has already been applied in many applications to realize over-air wireless power transmission.…”

Section: Introductionmentioning

confidence: 99%

Investigation and Design of Wireless Power Transfer System for Autonomous Underwater Vehicle

Dou

Zhao

Ouyang

et al. 2019

2019 IEEE Applied Power Electronics Conference and Exposition (APEC)

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With the development of wireless power transfer (WPT) technology, it is possible to transfer power to the batteries without plug-in cables and human interaction for autonomous underwater vehicles (AUVs), taking advantage of high safety, high reliability and unattended capability. However, when implementing the WPT system under the seawater environment, the electrical properties of seawater including the permittivity and the conductivity cause a significant changing in the parasitics of winding coils underwater. The seawater, which owns higher permittivity and conductivity compared to the air, not only causes extra parasitic capacitance to coils but also conducts extra eddy current loss, and thus reduces the system efficiency. In this paper, the characteristics of winding coils underwater are investigated and an optimized design methodology for underwater WPT system with series-series (SS) compensation is proposed. A 200-W underwater WPT prototype is built and experimentally verifies the analysis for the coils and the optimized design approach. The experimental demonstration also shows the system efficiency comparison between the air, the water, and the seawater environments.

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“…Tae-Dong Yeo et al [21] proposed a maximum efficiency tracking control scheme for closed-loop wireless charging (WPC) systems for wireless charging of mobile devices. Other studies [22,23] give a good introduction to the theory of high-resonance wireless power transmission (WPT) technology, emphasizing key system concepts such as frequency splitting [24][25][26], ideal operating distance (critical coupling), and the behavior of the system when over-coupled and under-coupled. Aiming at the magnetic over-coupling problem existing in WPT, YuE-Long Lyu [27] adopted two non-identical resonant coils as wireless power transmitter and receiver, respectively, to suppress or completely eliminate frequency division and achieve uniform power output.…”

Section: Introductionmentioning

confidence: 99%

Review of Crucial Problems of Underwater Wireless Power Transmission

Liu

Sun

et al. 2022

Electronics

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In order to solve the problem of energy supply for underwater equipment, wireless power transmission technology is becoming a new way of underwater power transmission. It has incomparable technical advantages over traditional power supply method, and can effectively improve the safety, reliability, convenience and concealment of power supply for underwater equipment. The WPT has a natural electrical isolation between the primary and secondary sides to ensure safe charging in an underwater environment. This breakthrough technology greatly facilitates power transmission in the deep sea. However, current transmission power and efficiency levels are not at the level of WPT systems in air. Based on the analysis of the development status of underwater wireless power transmission technology, this paper firstly puts forward the challenges of underwater wireless power transmission, and summarizes the electromagnetic coupler structure, underwater docking mode, compensation topology, control method and eddy current loss. The current research hotspots in the field of underwater wireless power transmission are summarized and analyzed. Finally, according to the development trend of technology, the urgent technical problems in underwater wireless power transmission are expounded.

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Analysis and experimental results of frequency splitting of underwater wireless power transfer

Cited by 23 publications

References 23 publications

Compensation Topologies in IPT Systems: Standards, Requirements, Classification, Analysis, Comparison and Application

Compensation Topologies in IPT Systems: Standards, Requirements, Classification, Analysis, Comparison and Application

Investigation and Design of Wireless Power Transfer System for Autonomous Underwater Vehicle

Review of Crucial Problems of Underwater Wireless Power Transmission

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