Limit behavior of the magnetic coupling coefficient for mid-range, near-field applications

13th International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications

物理学;能源学

Guthrie, Emily^1 ; Frolenkov, Anton^1 ; Mur-Miranda, Jose Oscar^1

Olin College of Engineering, Needham, MA, United States^1

关键词: Coil geometries;    Limit behavior;    Long ranges;    Magnetic behavior;    Magnetic coupling coefficients;    Near fields;    Separation distances;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/476/1/012116/pdf
DOI  :  10.1088/1742-6596/476/1/012116

来源: IOP

【 摘 要 】

We have derived compact algebraic bounds for the limit behavior of the magnetic coupling coefficient, κ, for axially aligned multilayer coils. These bounds are validated experimentally. We have also found an expression based on the coil geometry that captures its long-range magnetic behavior. In particular, the limit behavior of the magnetic coupling coefficient is the same for any pair of axially aligned multilayer coils when the separation distance is normalized by this expression.