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- Title
Design and Optimization of Reverse Series Triple Coil Structure with Simultaneous Offset and Load Fluctuation Resistance.
- Authors
Xiaohua Shu; Jianbin Wang; Chenxi Zhang; Zhongqi Li
- Abstract
In wireless power transfer (WPT) systems, the horizontal misalignment between coils and variations in the load result in significant fluctuations in the transmission efficiency of the system. In this paper, a reverse series triple coil (RTC) structure is proposed. The RTC structure offers improved resistance to deflection in the direction of vehicle motion because of the magnetic field interaction of the reverse series coils. This adjustment helps maintain a more stable system transmission efficiency when the coils are deflected. At the same time, when the load resistance varies within a certain range, the system's transmission efficiency remains almost unchanged. This is because the addition of relay coils makes the system more adaptable to load changes and improves the system's load compatibility. The experimental results indicate that the RTC structure corresponds to 300% of the load variation range of the conventional reverse series dual-coil structure, within the range where the system transmission efficiency is not less than 95%, in the load variation range that satisfies the load equivalent resistance from 15O to 68O. During the offset process, the maximum system transmission efficiency fluctuation rate is 1.19% for a distance of 55% of the core width of the offset transmitting coil on the horizontal Y -axis, and the maximum efficiency reaches as high as 97.26%.
- Subjects
WIRELESS power transmission; MAGNETIC fields
- Publication
Progress in Electromagnetics Research C, 2024, Vol 144, p9
- ISSN
1937-8718
- Publication type
Article
- DOI
10.2528/PIERC24013003