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YANG Chen,MA Guangtong,WANG Zhitao,ZHOU Pengbo,LI Xingtian,MAI Ruikun.Quasi-static Electromagnetic Characteristics of Wireless Power Transfer System with Array of Transmitters[J].JOURNAL OF POWER SUPPLY,2018,16(5):98-103
Quasi-static Electromagnetic Characteristics of Wireless Power Transfer System with Array of Transmitters
Received:October 08, 2016  Revised:April 23, 2018
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DOI:10.13234/j.issn.2095-2805.2018.5.98
Keywords:magnetic coupling resonant method  wireless power transfer  characteristics of electromagnetic distribution  finite-element analysis
Fund Project:National Natural Science Foundation of China (51475389); Science and Technology Department of Sichuan Province (2016JQ003)
                 
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YANG Chen State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu , China;School of Electrical Engineering, Southwest Jiaotong University, Chengdu , China
MA Guangtong State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu , China gtma@swjtu.com
WANG Zhitao State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu , China;School of Electrical Engineering, Southwest Jiaotong University, Chengdu , China
ZHOU Pengbo State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu , China
LI Xingtian State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu , China;School of Electrical Engineering, Southwest Jiaotong University, Chengdu , China
MAI Ruikun School of Electrical Engineering, Southwest Jiaotong University, Chengdu , China
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Abstract:
      As a new technology to realize contactless electric energy transmission, wireless power transfer based on magnetic coupling resonant method has been one of the hottest topics in the field of electrical engineering at present, which is owing to high transmission power and long transmission distance in comparison with the loose coupling sensing technology. In light of the dynamic wireless charging forhigh power equipment, such as electric vehicles and rail transit trains, a three-dimensional simulation model of magnetic coupling resonant wireless power transmission with an array of transmitters is established using finite element electromagnetic simulation software and based on the Maxwell equation in quasi-static condition. The reliability of the simulation model was verified by experimental tests. On this basis, the stability of load voltage at the receiving terminal and the characteristics of electromagnetic distribution in a quasi-static condition and with different system structures were studied through finite-element analysis. The research result in this paper provides certain theoretical reference for the structural design of the dynamic wireless charging system for electric vehicles and rail transit trains.
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