Computation of magnetic field and force between circular filaments arbitrarily positioned in space

Contactless inductive power transfer (CIPT) system is a newly developed technology which allows electrical energy to be transferred over a relatively large air-gap via high frequency magnetic fields. The wireless transfer of electrical energy is achieved via CIPT transformer which consists of air-cored circular coils. However, the purpose of CIPT systems is not always attainable due to lateral and angular misalignment between the primary and the secondary coils. This paper presents the effects of this misalignment on the magnetic field and the magnetic force components between circular filaments which are arbitrarily positioned in space. These computations are based on advanced and relevant models formulated in the literature. Detailed results obtained using SCILAB application software are given.