Precise Modeling of Mutual Inductance for Planar Spiral Coils in Wireless Power Transfer and its Application
- 所属单位：合肥工业大学
- 发表刊物：IEEE Transactions on Power Electronics
- 关键字：Euler angles, mutual inductance, planar spiral coils, self-inductance, wireless power transfer
- 摘要：In magnetic coupling resonant wireless power transfer (WPT) devices, planar spiral coils are often used as the coupling mechanism. In such application area, the coils are often wound sparsely with wide screw pitches and often under complex relative position. An accurate model of mutual inductance for planar spiral coils wound either densely or sparsely is established in this paper. Utilizing Euler Angles, an exact expression of mutual inductance for a couple of planar spiral coils under arbitrary relative position is proposed. Based on this expression and geometric mean distance principle, a self-inductance expression for planar spiral coils is derived. Based on numerical calculation of the expressions proposed in this paper, the influence of precession and spin angle on mutual inductance is studied; the method of determining radius of each turn when using traditional concentric circular filaments cluster approximation model for self- and mutual inductance calculation is studied; the difference of calculation results between the accurate model and the traditional approximation model is compared. Finite element simulation and experimental results verify the correctness of the proposed models.
- 论文类型：期刊论文
- 学科门类：工学
- 文献类型：J
- 卷号：36
- 期号：9
- 页面范围：9876-9885
- 是否译文：否
- 发表时间：2021-09-01
- 收录刊物：SCI
附件：
IEEE最终版本.pdf
