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The Optimal Design Methodology of Series-Series Resonant Tank Parameters of Wireless Power Transmission System Based on Leap Frequency Control Strategy |
Jiang Yongbin, Wang Yue, Liu Junwen, Liu Ming, Lei Wanjun |
State Key Laboratory of Electrical Insulation and Power Equipment Xi'an Jiaotong University Xi'an 710049 China |
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Abstract Wireless power transmission is a kind of electric power transmission method for convenience and safety. The series-series (SS) resonant wireless power transmission system (WPTS) for rapid battery charging is studied as the research object in this paper. Accordingly, a three-section charging curve is designed, and the corresponding leap-frequency control strategy (LFCS) is proposed. Based on the characteristics of battery charging curves, according to the features of constant voltage and constant current in resonant network as well as LFCS, this paper provides an optimal design methodology of resonant network parameter. It can provide the theoretical basis for design and optimization of resonant network parameters of WPTS. A wireless power transmission equipment which adopts SS compensation is designed to validate rationality of the selected parameters and effectiveness of LFCS. The equipment can realize three-section charging in the whole range of the battery, and the overall maximum efficiency can achieve 93.5% with the air gap of 12.5cm.
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Received: 14 December 2016
Published: 30 August 2017
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