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2015 IEEE Wireless Power Transfer Conference (WPTC)最新文献

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X-band wireless power transfer with two-stage high-efficiency GaN PA/ rectifier x波段无线电力传输与两级高效GaN / PA/整流器
2015 IEEE Wireless Power Transfer Conference (WPTC) Pub Date : 2015-05-13 DOI: 10.1109/WPT.2015.7140186
S. Schafer, Mike Coffey, Z. Popovic
{"title":"X-band wireless power transfer with two-stage high-efficiency GaN PA/ rectifier","authors":"S. Schafer, Mike Coffey, Z. Popovic","doi":"10.1109/WPT.2015.7140186","DOIUrl":"https://doi.org/10.1109/WPT.2015.7140186","url":null,"abstract":"A 2-stage X-band GaN MMIC operating as a power amplifier and rectifier is measured in a wireless power transfer link. The PA operates at 9.9 GHz in class-AB and achieves 10W of output power and >20 dB of gain. As a rectifier, the MMIC achieves over 52% RF-DC conversion efficiency at a power level of >8W. In a wireless powering link at a distance of 5 cm, the system achieves 10% DC-DC efficiency. The applications are bi-directional high power directional wireless power transfer (WPT).","PeriodicalId":194427,"journal":{"name":"2015 IEEE Wireless Power Transfer Conference (WPTC)","volume":"203 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127901890","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 22
A 2.45 GHz rectenna screen-printed on polycotton for on-body RF power transfer and harvesting 一种用于体内射频功率传输和收集的2.45 GHz屏幕印刷聚棉整流天线
2015 IEEE Wireless Power Transfer Conference (WPTC) Pub Date : 2015-05-13 DOI: 10.1109/WPT.2015.7140161
S. Adami, D. Zhu, Yi Li, E. Mellios, B. Stark, S. Beeby
{"title":"A 2.45 GHz rectenna screen-printed on polycotton for on-body RF power transfer and harvesting","authors":"S. Adami, D. Zhu, Yi Li, E. Mellios, B. Stark, S. Beeby","doi":"10.1109/WPT.2015.7140161","DOIUrl":"https://doi.org/10.1109/WPT.2015.7140161","url":null,"abstract":"This paper presents a 2.45 GHz rectenna on textile for RF power transfer and harvesting. Thin 350 μm polycotton is used as a baseline flexible substrate and screen printing technique is used to map different layers. A 310 μm interface layer is first printed on both sides of polycotton in order to smooth its surface. Silver layer is then printed onto the interface layers to map the antenna and the rectifier layouts. The substrate is characterized over the 0.5-4.5 GHz frequency range using the two-line method. A relative permittivity of 3.23 and a loss tangent of 0.06 have been obtained at 2.45 GHz. A standard patch antenna matched to 50 Ω and a dual-polarization rectenna have been designed. Measurement of the return loss S11 of the patch antenna shows an excellent correlation with simulation results, thus indicating that the two-line characterisation is accurate. The performance of the polycotton antenna and rectenna is evaluated and compared with FR4. The measured radiation efficiency is 11% for the polycotton antenna, and 30% for the FR4 antenna. The polycotton rectenna generates 300 mV and 100 μW, 15 cm from a 100 mW EIRP transmitter.","PeriodicalId":194427,"journal":{"name":"2015 IEEE Wireless Power Transfer Conference (WPTC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128945803","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 18
Underwater wireless power transfer 水下无线电力传输
2015 IEEE Wireless Power Transfer Conference (WPTC) Pub Date : 2015-05-13 DOI: 10.1109/WPT.2015.7139141
A. Askari, R. Stark, J. Curran, D. Rule, K. Lin
{"title":"Underwater wireless power transfer","authors":"A. Askari, R. Stark, J. Curran, D. Rule, K. Lin","doi":"10.1109/WPT.2015.7139141","DOIUrl":"https://doi.org/10.1109/WPT.2015.7139141","url":null,"abstract":"The feasibility of transferring power over a wide range of distances and orientation offsets has been proven in air for various commercial applications, notably in the electric vehicle industry, by using two loosely-coupled RLC circuits that are tuned to resonate at the same frequency. Key system concepts for resonant wireless power transfer, such as frequency splitting, maximum operating distance, and behavior of the system as it becomes over and under coupled, are well understood theoretically, and demonstrated experimentally. Although prior work on WPT in air is quite extensive and mature, very little research has been conducted on underwater WPT. In particular, no studies have been published describing how basic system concepts vary within a conducting medium such as seawater. In this paper, we report the results of experiments addressing the effects of seawater conductivity on underwater resonant wireless power transfer, compared to the basic system concepts exhibited in air. Results indicate that the losses due to seawater become noticeable for frequencies around 20 kHz, and can be large for frequencies above 50 kHz.","PeriodicalId":194427,"journal":{"name":"2015 IEEE Wireless Power Transfer Conference (WPTC)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127008625","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 46
Multi-objective particle swarm optimization applied to the design of Wireless Power Transfer systems 多目标粒子群算法在无线电力传输系统设计中的应用
2015 IEEE Wireless Power Transfer Conference (WPTC) Pub Date : 2015-05-13 DOI: 10.1109/WPT.2015.7139138
N. Hasan, Tuba Yilmaz, R. Zane, Zeljko Pantic
{"title":"Multi-objective particle swarm optimization applied to the design of Wireless Power Transfer systems","authors":"N. Hasan, Tuba Yilmaz, R. Zane, Zeljko Pantic","doi":"10.1109/WPT.2015.7139138","DOIUrl":"https://doi.org/10.1109/WPT.2015.7139138","url":null,"abstract":"This paper proposes a stochastic method - particle swarm optimization (PSO) and Pareto front technique, to conduct a multivariable optimization and design an inductively coupled power transfer system. Previously, design methods have been proposed which require designer experience; they are not only computationally challenging, but also frequently result in suboptimum solutions. The algorithm proposed in this paper models all losses and inductance matrix analytically. We study four common compensation structures, and select a series-parallel topology to design a 200 W experimental prototype optimized with respect to transfer efficiency and VA rating. Experiments and numerical simulations are employed to verify the optimization algorithm.","PeriodicalId":194427,"journal":{"name":"2015 IEEE Wireless Power Transfer Conference (WPTC)","volume":"170 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132149601","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 18
Three-phase magnetic field design for low EMI and EMF automated resonant wireless power transfer charger for UAV 无人机低电磁干扰和电动势自动谐振无线充电充电器的三相磁场设计
2015 IEEE Wireless Power Transfer Conference (WPTC) Pub Date : 2015-05-13 DOI: 10.1109/WPT.2015.7140179
C. Song, Hongseok Kim, D. Jung, Kibum Yoon, Yeonje Cho, Sunkyu Kong, Y. Kwack, Joungho Kim
{"title":"Three-phase magnetic field design for low EMI and EMF automated resonant wireless power transfer charger for UAV","authors":"C. Song, Hongseok Kim, D. Jung, Kibum Yoon, Yeonje Cho, Sunkyu Kong, Y. Kwack, Joungho Kim","doi":"10.1109/WPT.2015.7140179","DOIUrl":"https://doi.org/10.1109/WPT.2015.7140179","url":null,"abstract":"Wireless power transfer (WPT) technology enables convenient and automatic battery charging for unmanned aerial vehicles (UAVs). However, in WPT charging systems, strong electromagnetic fields (EMFs) are inevitably generated and the power source contains a wide range of harmonics. In this paper, we propose an automated resonant wireless power transfer charger for UAV with three-phase magnetic field for electromagnetic interference (EMI) and EMF reduction. The simulation results show that the proposed six-step three-phase resonant WPT system for UAV charging reduces the total harmonic distortion (THD) of the Tx and Rx currents by 14.21% and 7.45%, respectively. The strength of magnetic field from the UAV three-phase resonant WPT charging system also can be reduced compared to the single-phase resonant WPT system.","PeriodicalId":194427,"journal":{"name":"2015 IEEE Wireless Power Transfer Conference (WPTC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130293690","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 30
Circularly polarized near field for resonant wireless power transfer 共振无线电力传输的圆偏振近场
2015 IEEE Wireless Power Transfer Conference (WPTC) Pub Date : 2015-05-13 DOI: 10.1109/WPT.2015.7140117
Jing Wu, Bingnan Wang, W. Yerazunis, K. Teo
{"title":"Circularly polarized near field for resonant wireless power transfer","authors":"Jing Wu, Bingnan Wang, W. Yerazunis, K. Teo","doi":"10.1109/WPT.2015.7140117","DOIUrl":"https://doi.org/10.1109/WPT.2015.7140117","url":null,"abstract":"In this paper, we propose a near field coupling based wireless power transfer (WPT) system with circularly polarized magnetic field. With a pair of orthogonal resonant coils arranged to generate a circularly polarized near field, we show that the power transfer efficiency is largely maintained in case of rotational misalignment. Furthermore, by arranging the coils close to a metal surface, the power transfer efficiency is actually improved, rather than decreased as in the case of WPT system made with conventional coils. Depending on the application, the receiving coil can be either a pair of orthogonal coils, or conventional coils with flat structures. We believe that the proposed technology offers a great option toward flexible WPT applications.","PeriodicalId":194427,"journal":{"name":"2015 IEEE Wireless Power Transfer Conference (WPTC)","volume":"126 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115264555","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Optimization of a magnetically coupled resonators system for Power Line Communication integration 电力线通信集成磁耦合谐振器系统的优化
2015 IEEE Wireless Power Transfer Conference (WPTC) Pub Date : 2015-05-13 DOI: 10.1109/WPT.2015.7140145
S. Barmada, M. Tucci
{"title":"Optimization of a magnetically coupled resonators system for Power Line Communication integration","authors":"S. Barmada, M. Tucci","doi":"10.1109/WPT.2015.7140145","DOIUrl":"https://doi.org/10.1109/WPT.2015.7140145","url":null,"abstract":"In this contribution the authors propose a hybrid Wireless Power Transfer (WPT) - Power Line Communications (PLC) system, in which the WPT channel is interfaced to a PLC environment to allow data transfer when a cabled connection is no longer available. The system could be of potential use whenever charging and data transfer are performed at the same time, for instance during electric vehicle battery charging in a Smart Grid Environment. The considered WPT structure is the four coils coupled resonators and the optimization is performed taking into account energy efficiency/power transfer and channel capacity.","PeriodicalId":194427,"journal":{"name":"2015 IEEE Wireless Power Transfer Conference (WPTC)","volume":"108 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128159700","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 12
SAR distribution for a strongly coupled resonant wireless power transfer system 强耦合谐振无线电力传输系统的SAR分布
2015 IEEE Wireless Power Transfer Conference (WPTC) Pub Date : 2015-05-13 DOI: 10.1109/WPT.2015.7140173
Xingyi Shi, Benjamin H. Waters, Joshua R. Smith
{"title":"SAR distribution for a strongly coupled resonant wireless power transfer system","authors":"Xingyi Shi, Benjamin H. Waters, Joshua R. Smith","doi":"10.1109/WPT.2015.7140173","DOIUrl":"https://doi.org/10.1109/WPT.2015.7140173","url":null,"abstract":"Tissue heating is a key safety consideration in wireless power transfer (WPT) systems. Heating is regulated in the form of specific absorption rate (SAR) limitations to prevent dangerous conditions when wireless power transfer is used in proximity to people. Implanted biomedical devices which depend on wireless power transfer for their operation are particularly of interest, as a high potential for tissue heating exists in these systems. Finding ways to reduce SAR for a given load power requirement enables reduced tissue heating and/or increased limits on power transmission. This work explores SAR heating in the two resonant modes (in-phase and out-of-phase) of a strongly coupled wireless power transfer system, where the power receiver is implanted in tissue. Results based on full EM simulation with realistic planar transmit/receive coil model near 13.56 MHz and simplified tissue model indicate that the higher frequency mode (out-of-phase mode) of strongly coupled wireless power transfer results in significantly lower peak and average SAR heating.","PeriodicalId":194427,"journal":{"name":"2015 IEEE Wireless Power Transfer Conference (WPTC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125862034","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 7
Thermal and biofouling effects on underwater wireless power transfer 热和生物污垢对水下无线电力传输的影响
2015 IEEE Wireless Power Transfer Conference (WPTC) Pub Date : 2015-05-13 DOI: 10.1109/WPT.2015.7140146
J. Oiler, G. Anderson, V. Bana, A. Phipps, M. Kerber, J. Rockway
{"title":"Thermal and biofouling effects on underwater wireless power transfer","authors":"J. Oiler, G. Anderson, V. Bana, A. Phipps, M. Kerber, J. Rockway","doi":"10.1109/WPT.2015.7140146","DOIUrl":"https://doi.org/10.1109/WPT.2015.7140146","url":null,"abstract":"This paper presents a characterization of the thermal effects and marine fouling on an undersea wireless power transfer system. The coils used in wireless power transfer experience elevated temperatures due to the resistive losses in the wire. Several different coating strategies to both protect the coils against seawater and dissipate the generated heat are investigated. In addition, the rise in temperature can increase the likelihood of marine bio-fouling on the exposed surfaces of the coils. A study of bio-fouling on the wireless power transfer coils and whether there might be increased microbial growth as a result of the power transfer is also explored.","PeriodicalId":194427,"journal":{"name":"2015 IEEE Wireless Power Transfer Conference (WPTC)","volume":"4 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124299571","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 11
Study on WPT system using a radio wave hose as a new transmission line 无线电波软管作为新型传输线的WPT系统研究
2015 IEEE Wireless Power Transfer Conference (WPTC) Pub Date : 2015-05-13 DOI: 10.1109/WPT.2015.7140136
S. Ishino, Y. Takimoto, Atsushi Kishimoto, Yong Huang, N. Shinohara, S. Kato
{"title":"Study on WPT system using a radio wave hose as a new transmission line","authors":"S. Ishino, Y. Takimoto, Atsushi Kishimoto, Yong Huang, N. Shinohara, S. Kato","doi":"10.1109/WPT.2015.7140136","DOIUrl":"https://doi.org/10.1109/WPT.2015.7140136","url":null,"abstract":"In this study, we propose the use of a radio wave hose as a new transmission line and present the result of our basic study on a wireless power transmission method using microwaves. We fabricated a prototype radio wave hose by plating and processing into a resin hose, with a conductive coating and evaluated its transmission characteristics using electromagnetic field simulation and basic experimentation. Next, we constructed an experimental system for wireless power transmission using the radio wave hose and confirmed the possibility of wireless power transmission of a 100-mW class on a 5.8-GHz band.","PeriodicalId":194427,"journal":{"name":"2015 IEEE Wireless Power Transfer Conference (WPTC)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122918009","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
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