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- Title
Design and Optimization of Quasi-Constant Mutual Inductance for Asymmetric Two-Coil Wireless Power Transfer System with Lateral Misalignments.
- Authors
Zhongqi Li; Wangyang Cheng; Jiliang Yi; Junjun Li
- Abstract
Magnetic resonant wireless power transfer (WPT) is an emerging technology that may create new applications for wireless power charging. However, the output voltage fluctuations resulting from lateral misalignments are main obstructing factors for promoting this technology. In this paper, an asymmetric two-coil WPT system is presented. The mathematical model of the proposed topology with lateral misalignments is built based on equivalent circuit method. The expression of the output voltage is then derived by solving the system equivalent equations. In addition, a method of optimization parameters is proposed. The mutual inductance between the receiving coil and transmission coil is nearly constant by the proposed method with lateral misalignments. Therefore, the output voltage can be kept nearly constant. The asymmetric two-coil WPT system via magnetic resonance coupling is designed. Simulated and experimental results validating the proposed method are given.
- Subjects
WIRELESS power transmission; MAGNETIC reluctance generators; ELECTRIC inductance
- Publication
Progress in Electromagnetics Research M, 2018, Vol 69, p207
- ISSN
1937-8726
- Publication type
Article
- DOI
10.2528/pierm18042503