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The design and optimization of coils for Inductive Power Transfer (IPT) systems is an iterative process conducted in Finite Element (FE) tools that takes a lot of time and computational resources. In order to overcome such limitations in the design process, new empirical equations for the evaluation of the self-inductance and mutual inductance values are proposed in this work. By means of a multi-objective genetic programming algorithm, the self-inductance, the mutual inductance and the coupling factor values obtained from FE simulations of IPT link are accounted by analytical equations based on the geometric parameters defining the IPT link. The behavioral modeling results are compared with both FE-based and experimental results, showing a good accuracy.

New magnetic composite based on ferromagnetic nano-particles embedded in a polymeric material can potentially offer significant electromagnetic advantages over the polymer used to protect the ferrite in Wireless Power Transfer systems. Since the nano-particles and the strands of the litz wire are very small, brute force simulation by Finite Element Method is not possible. In this work, a method to overcome these limitations is proposed based on the use of homogenization techniques that will allow replacing both the Litz and the magnetic compound material by homogenous equivalent materials that will behave, in a macroscopic sense, as the actual material.

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