Distributed IPT systems for dynamic powering: Misalignment analysis

This paper looks into the problem of misalignment in distributed inductive power transfer systems. The idea of varying mutual inductance longitudinally referred to as longitudinal misalignment is introduced here. The analytical expressions for both lateral and longitudinal misalignment are derived. Experimental validation of the theory developed is also performed. In case of conventional rectangular coils, the vertical sections are not symmetrical. This was observed in the mutual inductance profile experimentally, and the concept of 'Edge Effect' was introduced to explain the same. An inductor with symmetrical ends was constructed to tackle this problem.