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2017 IEEE PELS Workshop on Emerging Technologies: Wireless Power Transfer (WoW)最新文献

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Electromagnetic safety of magnetic resonant wireless charging system in electric vehicles 电动汽车磁谐振无线充电系统的电磁安全性
2017 IEEE PELS Workshop on Emerging Technologies: Wireless Power Transfer (WoW) Pub Date : 2017-05-20 DOI: 10.1109/WOW.2017.7959402
Quandi Wang, Wanlu Li, Jianwei Kang, Yingcong Wang
{"title":"Electromagnetic safety of magnetic resonant wireless charging system in electric vehicles","authors":"Quandi Wang, Wanlu Li, Jianwei Kang, Yingcong Wang","doi":"10.1109/WOW.2017.7959402","DOIUrl":"https://doi.org/10.1109/WOW.2017.7959402","url":null,"abstract":"With the increase in transmission power of the wireless charging system in electric vehicles, the magnetic field strength around the system tends to be larger, so it is increasingly necessary to evaluate the electromagnetic safety of the system. In this study, the electromagnetic safety in adult and child bodies exposed to a magnetic resonant WPT system in an electric vehicle is evaluated considering four exposure schemes. Three human body models and a real-size electric vehicle model are constructed. The transmission power and frequency are 10kW and 85kHz, respectively. Numerical computation with the finite element method is implemented. The results show the exposure limit can be generally satisfied in the adult body model standing behind the car and sitting in the driver's seat. While the induced electric field is in excess of the limit in small parts of the adult and child body models lying behind the car which are very close to the Litz wires of the WPT system. This paper offers a significant guideline for the selection of transmission power and the design of the system.","PeriodicalId":242505,"journal":{"name":"2017 IEEE PELS Workshop on Emerging Technologies: Wireless Power Transfer (WoW)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116319570","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: 13
An ECPT system with complementary symmetric LCC resonant network 具有互补对称LCC谐振网络的ECPT系统
2017 IEEE PELS Workshop on Emerging Technologies: Wireless Power Transfer (WoW) Pub Date : 2017-05-20 DOI: 10.1109/WOW.2017.7959377
Xueying Wu, Yugang Su, Long Chen, S. Xie, Yu-Ming Zhao
{"title":"An ECPT system with complementary symmetric LCC resonant network","authors":"Xueying Wu, Yugang Su, Long Chen, S. Xie, Yu-Ming Zhao","doi":"10.1109/WOW.2017.7959377","DOIUrl":"https://doi.org/10.1109/WOW.2017.7959377","url":null,"abstract":"Aiming at the problem of short transmission distance and low transmission efficiency, a parameter configuration method for the complementary symmetric LCC networks is proposed on the basis of the ECPT system with double-sided LC resonant network. The equivalent capacitance Cs is introduced into LC network to form LCC resonant network. Through the mechanism analysis and the parameter design of the forward LCC network, the constant voltage output of the forward LCC network is achieved; with the symmetric design of the inverse LCC network, the system characteristics including ZPA (zero phase angle) and constant current operation are obtained. The analytic relationship between the resonant operating point and system parameters is obtained by the stroboscopic map modeling method. Combining with the identification of Cs and variable frequency control, the system can still work steadily in ZPA state after Cs changes. The simulation and experimental results are in good agreement.","PeriodicalId":242505,"journal":{"name":"2017 IEEE PELS Workshop on Emerging Technologies: Wireless Power Transfer (WoW)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133132725","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
Research on compensation start-up of self-oscillating resonant converter 自振荡谐振变换器补偿启动研究
2017 IEEE PELS Workshop on Emerging Technologies: Wireless Power Transfer (WoW) Pub Date : 2017-05-20 DOI: 10.1109/WOW.2017.7959380
Qingqing Li, Shulin Liu, Xiao Wang, Huisan Xu
{"title":"Research on compensation start-up of self-oscillating resonant converter","authors":"Qingqing Li, Shulin Liu, Xiao Wang, Huisan Xu","doi":"10.1109/WOW.2017.7959380","DOIUrl":"https://doi.org/10.1109/WOW.2017.7959380","url":null,"abstract":"Aiming at the complicated control problem of the existing inductively coupled power transfer system, a self-oscillating control method for the push-pull resonant converter with parallel-series compensation is proposed. The necessity of designing the start-up circuit is explained by illustrating the principle of self-oscillating control. Based on the analysis of the energy transfer mechanism of the start-up circuit, the method of injecting energy into the resonant tank to compensate the energy consumed by the resistance of the damped oscillation is obtained to solve the circuit start-up problem. A self-oscillating resonant converter experimental apparatus without the external controlling signal is designed and relevant parameters are tested, which shows the correctness of the start-up principle analysis and the simple reliability of the circuit designing.","PeriodicalId":242505,"journal":{"name":"2017 IEEE PELS Workshop on Emerging Technologies: Wireless Power Transfer (WoW)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124087424","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: 0
Reactive power comparison of four-coil, LCC and CLC compensation network for wireless power transfer 四圈补偿网络、LCC补偿网络和CLC补偿网络的无功功率比较
2017 IEEE PELS Workshop on Emerging Technologies: Wireless Power Transfer (WoW) Pub Date : 2017-05-20 DOI: 10.1109/WOW.2017.7959407
Shuling Luo, Siqi Li, H. Zhao
{"title":"Reactive power comparison of four-coil, LCC and CLC compensation network for wireless power transfer","authors":"Shuling Luo, Siqi Li, H. Zhao","doi":"10.1109/WOW.2017.7959407","DOIUrl":"https://doi.org/10.1109/WOW.2017.7959407","url":null,"abstract":"Compensation circuit is very important in a wireless power transfer (WPT) system. At resonant frequency, the four-coil structure can be equivalent to two different two-coil structures with LCC and CLC compensation. The voltage and current in power electronics converter and coils are the same for the three structures. However, the voltage and current in the compensation circuits are different. In this paper, the optimal parameter design methods for four-coil, LCC and CLC structure are proposed. Then, the reactive power of the three optimized system using different compensation circuits is compared by analysis, simulation and experiment. A simple conclusion comes out that the LCC compensation circuit has the minimum reactive power among the three structures.","PeriodicalId":242505,"journal":{"name":"2017 IEEE PELS Workshop on Emerging Technologies: Wireless Power Transfer (WoW)","volume":"82 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127302213","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: 21
A Class-E2 wireless power transfer system with different efficiency curves 具有不同效率曲线的e2类无线电力传输系统
2017 IEEE PELS Workshop on Emerging Technologies: Wireless Power Transfer (WoW) Pub Date : 2017-05-20 DOI: 10.1109/WOW.2017.7959363
Mingyu Liu, Donglai Zhang, Dandan Wang
{"title":"A Class-E2 wireless power transfer system with different efficiency curves","authors":"Mingyu Liu, Donglai Zhang, Dandan Wang","doi":"10.1109/WOW.2017.7959363","DOIUrl":"https://doi.org/10.1109/WOW.2017.7959363","url":null,"abstract":"Class-E inverters and Class-E rectifiers are combined to compose isolated Class-E2 DC/DC converters to transfer power through loosely coupled inductive coils. A design method for this converter is discussed to achieve ZVS (zero-voltage switching) and ZDS (zero-derivative switching). The converter is operated in a fix-frequency and open-loop mode. Load characteristics for this converter are analyzed in graphs including the relations among output voltage, output current and efficiency. High impedance design fitting for light load and load insensitive design fitting for heavy load are introduced to get different efficiency curves, which are suitable for different load probability distribution in different applications.","PeriodicalId":242505,"journal":{"name":"2017 IEEE PELS Workshop on Emerging Technologies: Wireless Power Transfer (WoW)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123277156","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: 0
Copper foil windings for WPT systems WPT系统用铜箔绕组
2017 IEEE PELS Workshop on Emerging Technologies: Wireless Power Transfer (WoW) Pub Date : 2017-05-20 DOI: 10.1109/WOW.2017.7959387
Yunyu Tang, Hao Ma, D. Thrimawithana, U. Madawala
{"title":"Copper foil windings for WPT systems","authors":"Yunyu Tang, Hao Ma, D. Thrimawithana, U. Madawala","doi":"10.1109/WOW.2017.7959387","DOIUrl":"https://doi.org/10.1109/WOW.2017.7959387","url":null,"abstract":"Wireless power transfer (WPT) is a promising technology for charging electric vehicles (EVs) as it is convenient, and less sensitive to the environmental conditions. Usually charging coils (pads) of WPT based EV charging systems are made of Litz wire, making coils bulky and expensive with relatively high copper losses. This paper investigates the use of copper foil based pad designs for WPT systems to reduce both the cost and losses. A comparison of Litz wire based and copper foil based pads is presented in terms of flux distribution and coupling performance. A new curved shaped copper foil design is also proposed, presenting results in comparison to a simple copper foil pad design. Both simulated and experimental results suggest that the losses can be reduced significantly by the proposed curved copper foil coil design.","PeriodicalId":242505,"journal":{"name":"2017 IEEE PELS Workshop on Emerging Technologies: Wireless Power Transfer (WoW)","volume":"40 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120902960","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
Modeling and analysis of a 3kW wireless charging system for electric vehicle 3kW电动汽车无线充电系统建模与分析
2017 IEEE PELS Workshop on Emerging Technologies: Wireless Power Transfer (WoW) Pub Date : 2017-05-20 DOI: 10.1109/WOW.2017.7959391
L. Tan, Jiacheng Li, Xueliang Huang, Changfu Xu
{"title":"Modeling and analysis of a 3kW wireless charging system for electric vehicle","authors":"L. Tan, Jiacheng Li, Xueliang Huang, Changfu Xu","doi":"10.1109/WOW.2017.7959391","DOIUrl":"https://doi.org/10.1109/WOW.2017.7959391","url":null,"abstract":"This paper designs a 3kW magnetic resonance wireless charging system for electric vehicles (EVs), and an explicit solution is derived. The maximum power transmission efficiency (PTE) is above 90% in this system. By the way of adjusting the duty ratio, this system adapts the dynamic change of the battery load and balances current of the transmitting coil and receiving coil. At the same time, the charging power and PTE are also greatly increased.","PeriodicalId":242505,"journal":{"name":"2017 IEEE PELS Workshop on Emerging Technologies: Wireless Power Transfer (WoW)","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123156432","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: 9
Research on magnetic coupling resonance wireless power transfer system with variable coil structure 变线圈结构磁耦合共振无线电力传输系统研究
2017 IEEE PELS Workshop on Emerging Technologies: Wireless Power Transfer (WoW) Pub Date : 2017-05-20 DOI: 10.1109/WOW.2017.7959403
Yameng Wang, Jiancheng Song, Linyan Lin, Xinghua Wu, W. Zhang
{"title":"Research on magnetic coupling resonance wireless power transfer system with variable coil structure","authors":"Yameng Wang, Jiancheng Song, Linyan Lin, Xinghua Wu, W. Zhang","doi":"10.1109/WOW.2017.7959403","DOIUrl":"https://doi.org/10.1109/WOW.2017.7959403","url":null,"abstract":"Wireless power transfer technology is widely used in implantable medical devices, electric vehicles and other field, but the problem of magnetic coupling resonance technology is that transmission efficiency is limited by transmission distance, which restricts the popularization and application of this technology. Aiming at the problem existing in the magnetic coupling resonance wireless energy transfer system, the mutual inductance coupling theory is adopting to model of resonance coupling unit, the calculation method of voltage > current and circuit parameters of the circuit of each part of the system are proposed, the relationship between the system transmission efficiency of two-coil and four-coil structure for resonance coupling part and transmission distance is analyzed, and a magnetic coupling resonance wireless power transfer system with variable coil structure is designed. According to the structure parameters of the design system, the simulation and experiment system are built, the transmission efficiency of the system are proved by simulation and experiment, and the experiment results verify the effectiveness and practicability of the designed coil structure, which can achieve the maximization of transmission efficiency of wireless power transfer system with variable coil structure under different transmission distances.","PeriodicalId":242505,"journal":{"name":"2017 IEEE PELS Workshop on Emerging Technologies: Wireless Power Transfer (WoW)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128640500","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: 9
A new type of power supply for excitation mechanism of motor in electrical appliance 一种用于电器电机励磁机构的新型电源
2017 IEEE PELS Workshop on Emerging Technologies: Wireless Power Transfer (WoW) Pub Date : 2017-05-20 DOI: 10.1109/WOW.2017.7959381
F. Wen, Xueliang Huang, L. Tan
{"title":"A new type of power supply for excitation mechanism of motor in electrical appliance","authors":"F. Wen, Xueliang Huang, L. Tan","doi":"10.1109/WOW.2017.7959381","DOIUrl":"https://doi.org/10.1109/WOW.2017.7959381","url":null,"abstract":"In this paper, we propose a new type of brushless excitation mechanism. Powering the motor exciting winding by wireless power transmission (WPT) based on magnetically-coupled resonance can be an efficient way to avoid mechanical connection of the rotor and the external terminal, and achieve brushless excitation conveniently and economically in a novel method. The constituent parts of this excitation mechanism and the way they work together are introduced. We also design different types of resonators for different excitation demands. The electromagnetic environment of this mechanism is studied and some confirmatory experiments are carried out, the results reveal the effectiveness.","PeriodicalId":242505,"journal":{"name":"2017 IEEE PELS Workshop on Emerging Technologies: Wireless Power Transfer (WoW)","volume":"2001 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132782334","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
High-frequency electromagnetic force characteristics on electromagnetic shielding materials in wireless power transmission system 无线电力传输系统中电磁屏蔽材料的高频电磁力特性
2017 IEEE PELS Workshop on Emerging Technologies: Wireless Power Transfer (WoW) Pub Date : 2017-05-20 DOI: 10.1109/WOW.2017.7959369
Xian Zhang, Zhaoyang Yuan, Qingxin Yang, Hao Meng, Yao Jin, Zhaohui Wang, Siyuan Jiang
{"title":"High-frequency electromagnetic force characteristics on electromagnetic shielding materials in wireless power transmission system","authors":"Xian Zhang, Zhaoyang Yuan, Qingxin Yang, Hao Meng, Yao Jin, Zhaohui Wang, Siyuan Jiang","doi":"10.1109/WOW.2017.7959369","DOIUrl":"https://doi.org/10.1109/WOW.2017.7959369","url":null,"abstract":"The high frequency resonant current in coupler would inevitable results in interaction of electromagnetic force (EMF), leading to short service life, poor security and low reliability of wireless power transmission (WPT). It may be worse when electromagnetic shielding (EMS) materials are used. The mechanism and characteristics of the EMF on various EMS materials are revealed. Based on Lorentz force and Kelvin force, the mathematical calculating model of EMF is established with analysis of forces of iron, copper, aluminum, and ferrite. The effects of electric conductivity and magnetic permeability on EMF are compared. Simulation is established to verify the analysis of the high frequency EMF. The results showed that the effects of electric conductivity and magnetic permeability on the direction of the EMF are opposite. And the force can be reduced by appropriate designing the shielding structure.","PeriodicalId":242505,"journal":{"name":"2017 IEEE PELS Workshop on Emerging Technologies: Wireless Power Transfer (WoW)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117139494","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
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