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

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Comparison of current driven Class-D and Class-E half-wave rectifiers for 6.78 MHz high power IPT applications 6.78 MHz大功率IPT应用中电流驱动的d类和e类半波整流器的比较
2015 IEEE Wireless Power Transfer Conference (WPTC) Pub Date : 2015-05-13 DOI: 10.1109/WPT.2015.7140166
G. Kkelis, D. Yates, P. Mitcheson
{"title":"Comparison of current driven Class-D and Class-E half-wave rectifiers for 6.78 MHz high power IPT applications","authors":"G. Kkelis, D. Yates, P. Mitcheson","doi":"10.1109/WPT.2015.7140166","DOIUrl":"https://doi.org/10.1109/WPT.2015.7140166","url":null,"abstract":"Two current driven half wave rectifier topologies, Class-D and -E, have been characterised for IPT applications. Both rectifiers utilised SiC Schottky diodes for high power capability. The Class-D topology has reached efficiencies up to 95% and the Class-E up to 90%. Both topologies achieved their highest efficiencies at high voltage operation as the parasitic capacitances of the SiC diodes were affecting the circuit's operation at low voltages.","PeriodicalId":194427,"journal":{"name":"2015 IEEE Wireless Power Transfer Conference (WPTC)","volume":"39 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":"131475446","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: 24
Class EF2 inverters for wireless power transfer applications 用于无线电力传输应用的EF2类逆变器
2015 IEEE Wireless Power Transfer Conference (WPTC) Pub Date : 2015-05-13 DOI: 10.1109/WPT.2015.7140141
S. Aldhaher, G. Kkelis, D. Yates, P. Mitcheson
{"title":"Class EF2 inverters for wireless power transfer applications","authors":"S. Aldhaher, G. Kkelis, D. Yates, P. Mitcheson","doi":"10.1109/WPT.2015.7140141","DOIUrl":"https://doi.org/10.1109/WPT.2015.7140141","url":null,"abstract":"Class EF inverters are hybrid inverters that combine the improved switch voltage and current waveforms of Class F and Class F-1 inverters with the efficient switching of Class E inverters. As a result, their switch voltage and current stresses are reduced, and their efficiency, output power and power-output capability can be higher than the Class E inverter. These improved features of Class EF inverters over Class E inverters can be beneficial in a wireless power transfer (WPT) via magnetic induction application. This paper demonstrates the application of a Class EF inverter operating at a 6.78MHz for a 25W WPT system. A sixth-order piecewise-linear state space model is presented to analyse the inverter and to derive values of its components to achieve optimum switching operation. Experimental results are provided to confirm validity of the state-space model and the design of the inverter and a DC-DC efficiency of 87% was achieved.","PeriodicalId":194427,"journal":{"name":"2015 IEEE Wireless Power Transfer Conference (WPTC)","volume":"101 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":"122297228","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
EV usage and city planning of charging station installations 电动汽车的使用和充电站设施的城市规划
2015 IEEE Wireless Power Transfer Conference (WPTC) Pub Date : 2015-05-13 DOI: 10.1109/WPT.2015.7139139
Huawei Yang, Yabiao Gao, K. Farley, Michael Jerue, Jason Perry, Z. Tse
{"title":"EV usage and city planning of charging station installations","authors":"Huawei Yang, Yabiao Gao, K. Farley, Michael Jerue, Jason Perry, Z. Tse","doi":"10.1109/WPT.2015.7139139","DOIUrl":"https://doi.org/10.1109/WPT.2015.7139139","url":null,"abstract":"Electric vehicles (EVs) are becoming popular in the United States. Battery EVs, powered exclusively by electricity, draw more attention because they emit zero exhaust fumes, transfer energy efficiently and can be more economical compared with internal combustion automobiles. This paper presents a comprehensive analysis of the real-world charging, driving and energy consumption patterns of electric vehicles and charging stations deployed in a college town over a period of ten months. Data collection approaches include data from charging stations and from Nissan CARWINGS telematics services. Results indicate that most charging events last fewer than three hours and most battery EVs are used locally within Athens, GA. Based on this EV usage analysis, potential impacts of wireless EV charging stations as well as a list of practical factors are discussed when implementing wireless charging stations across the city.","PeriodicalId":194427,"journal":{"name":"2015 IEEE Wireless Power Transfer Conference (WPTC)","volume":"16 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":"129726418","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: 20
Design of highly sensitive CMOS RF energy harvester using ultra-low power charge pump 采用超低功率电荷泵的高灵敏度CMOS射频能量采集器的设计
2015 IEEE Wireless Power Transfer Conference (WPTC) Pub Date : 2015-05-13 DOI: 10.1109/WPT.2015.7140163
Durgham Al-Shebanee, R. Wunderlich, S. Heinen
{"title":"Design of highly sensitive CMOS RF energy harvester using ultra-low power charge pump","authors":"Durgham Al-Shebanee, R. Wunderlich, S. Heinen","doi":"10.1109/WPT.2015.7140163","DOIUrl":"https://doi.org/10.1109/WPT.2015.7140163","url":null,"abstract":"This work aims to enhance the sensitivity of the RF energy harvesting system by increasing the input RF voltage and supporting the rectifier by a DC/DC up-converter. The rectifier design concept is based on keeping high input reactance to maximize the resonance. On the other hand, an ultra low power charge pump is connected to the rectifier in order to boost the DC voltage. The system design and layout has been done using 0.13um technology. The simulations show that the sensitivity of system to produce more than 1V for unloaded output capacitor is -29 dBm with frequency band of (0.8-0.9)GHz and it is -24 dBm with (2.4-2.5)GHz.","PeriodicalId":194427,"journal":{"name":"2015 IEEE Wireless Power Transfer Conference (WPTC)","volume":"32 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":"130784348","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
Ultra-thin printed circuit board metamaterial for high efficiency wireless power transfer 用于高效率无线电力传输的超薄印刷电路板材料
2015 IEEE Wireless Power Transfer Conference (WPTC) Pub Date : 2015-05-13 DOI: 10.1109/WPT.2015.7140118
Yeonje Cho, Hongseok Kim, C. Song, Jinwook Song, Dong-Hyun Kim, Hyoungjun Kim, C. Seo, Joungho Kim
{"title":"Ultra-thin printed circuit board metamaterial for high efficiency wireless power transfer","authors":"Yeonje Cho, Hongseok Kim, C. Song, Jinwook Song, Dong-Hyun Kim, Hyoungjun Kim, C. Seo, Joungho Kim","doi":"10.1109/WPT.2015.7140118","DOIUrl":"https://doi.org/10.1109/WPT.2015.7140118","url":null,"abstract":"Metamaterial composed of artificial periodic structure is applied to a wireless power transfer system to enhance the efficiency of long distance power transfer. Metamaterial can control the direction of magnetic fields due to its negative permeability. Previously reported metamaterials were too thick and large in size to increase the power transfer distance. In this paper, ultra-thin (0.16 cm) and small (18.6 × 18.6 cm) metamaterial structure is proposed and its enhanced efficiency (with maximum of 44.2 % improvement) is demonstrated. Furthermore, this paper shows simplified modeling method for complicated metamaterial structure simulation.","PeriodicalId":194427,"journal":{"name":"2015 IEEE Wireless Power Transfer Conference (WPTC)","volume":"57 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":"134411217","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
Coil design for high efficiency and low magnetic field leakage of wireless charging system for electric vehicle 高效低漏磁场的电动汽车无线充电系统线圈设计
2015 IEEE Wireless Power Transfer Conference (WPTC) Pub Date : 2015-05-13 DOI: 10.1109/WPT.2015.7140180
Hongseok Kim, C. Song, Joungho Kim
{"title":"Coil design for high efficiency and low magnetic field leakage of wireless charging system for electric vehicle","authors":"Hongseok Kim, C. Song, Joungho Kim","doi":"10.1109/WPT.2015.7140180","DOIUrl":"https://doi.org/10.1109/WPT.2015.7140180","url":null,"abstract":"This paper briefly overviews the design considerations, related equations and conditions for the magnetically coupled coils having low leakage magnetic fields and high efficiency. As a design example, a coil design for 1kW-class wireless charging system for compact EV is presented and validated via measurement.","PeriodicalId":194427,"journal":{"name":"2015 IEEE Wireless Power Transfer Conference (WPTC)","volume":"127 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":"129386247","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: 6
Wireless far-field charging of a micro-UAV 微型无人机的无线远场充电
2015 IEEE Wireless Power Transfer Conference (WPTC) Pub Date : 2015-05-13 DOI: 10.1109/WPT.2015.7140154
S. Dunbar, F. Wenzl, Christopher Hack, Ronny Hafeza, Hasan Esfeer, F. Defay, S. Prothin, D. Bajon, Z. Popovic
{"title":"Wireless far-field charging of a micro-UAV","authors":"S. Dunbar, F. Wenzl, Christopher Hack, Ronny Hafeza, Hasan Esfeer, F. Defay, S. Prothin, D. Bajon, Z. Popovic","doi":"10.1109/WPT.2015.7140154","DOIUrl":"https://doi.org/10.1109/WPT.2015.7140154","url":null,"abstract":"Flight time of micro-UAVs is limited by the battery size they can carry. Typically, they need to land and recharged after about 10 minutes. This paper presents a method for wirelessly charging the UAV battery when it lands, without the need to remove it and replace it. The system consists of a light-weight flexible rectenna array mounted on the UAV body and micro-controller driven power management circuit that enables efficient battery charging. In this work, a frequency of 5.9GHz is chosen as a compromise between size and rectifier efficiency. The UAV battery is charged from the edge of the far field with about 5W of transmit power.","PeriodicalId":194427,"journal":{"name":"2015 IEEE Wireless Power Transfer Conference (WPTC)","volume":"116 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":"133091109","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: 23
Bow-tie rectenna arrays 领结式天线阵列
2015 IEEE Wireless Power Transfer Conference (WPTC) Pub Date : 2015-05-13 DOI: 10.1109/WPT.2015.7140158
N. Basta, E. Falkenstein, Z. Popovic
{"title":"Bow-tie rectenna arrays","authors":"N. Basta, E. Falkenstein, Z. Popovic","doi":"10.1109/WPT.2015.7140158","DOIUrl":"https://doi.org/10.1109/WPT.2015.7140158","url":null,"abstract":"This paper presents experimental results on several self-complementary bow-tie antenna arrays populated with rectifier diodes. Results with two different diodes are compared, and the number of diodes, antenna polarization, DC load, DC connection (parallel/series) and incident power density are varied. The transmitter is in the far field and the incident power density ranges from 10 to 125μW/cm2 at 2.3GHz. The main conclusion of this work is that it is possible to transmit useful power wirelessly, using low and safe power density levels (tens of μW/cm2), and receive it with a scalable device.","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":"121375812","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: 16
Study on high efficiency WPT underseas 海底高效WPT的研究
2015 IEEE Wireless Power Transfer Conference (WPTC) Pub Date : 2015-05-13 DOI: 10.1109/WPT.2015.7140149
D. Futagami, Y. Sawahara, T. Ishizaki, I. Awai
{"title":"Study on high efficiency WPT underseas","authors":"D. Futagami, Y. Sawahara, T. Ishizaki, I. Awai","doi":"10.1109/WPT.2015.7140149","DOIUrl":"https://doi.org/10.1109/WPT.2015.7140149","url":null,"abstract":"Aiming at the undersea WPT (Wireless Power Transfer) system, improvement of power transfer efficiency through saltwater is studied. We have examined the unloaded Q (Qu) and coupling coefficient (k) of the spiral coil resonators for different diameters and different operating frequencies with the number of turns fixed. In addition, introducing a new structure of 4-layered spiral coil resonators, we found the improved transfer efficiency, especially by adopting dense winding of litz wire.","PeriodicalId":194427,"journal":{"name":"2015 IEEE Wireless Power Transfer Conference (WPTC)","volume":"39 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":"123256782","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
Design of a transmitter coil for use in two wireless power transmission standards 用于两种无线电力传输标准的发射线圈的设计
2015 IEEE Wireless Power Transfer Conference (WPTC) Pub Date : 2015-05-13 DOI: 10.1109/WPT.2015.7140114
Eonsu Noh, Kangwook Kim
{"title":"Design of a transmitter coil for use in two wireless power transmission standards","authors":"Eonsu Noh, Kangwook Kim","doi":"10.1109/WPT.2015.7140114","DOIUrl":"https://doi.org/10.1109/WPT.2015.7140114","url":null,"abstract":"A transmitter coil system for use in two wireless power transmission standards are designed, fabricated, and measured. The coil system consists of an active coil and a parasitic coil. A commercially available Wireless Power Consortium (WPC) coil is used as the active coil. The parasitic coil and the loading impedance is designed, fabricated, and placed near the active coil. The input impedance of the proposed coil system is measured and shown that it can be used as the transmitter coil for both standards.","PeriodicalId":194427,"journal":{"name":"2015 IEEE Wireless Power Transfer Conference (WPTC)","volume":"17 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":"123653817","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: 1
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