Omnidirectional Coupling

Abstract

Thus far, fixed coil parameters have been assumed for in design and optimisation of an inductive power link. If the exact value of some of these parameters was hard to define, a worst-case value is used instead. The underlying idea is that when a link meets the specifications for this worst-case scenario, it also does under more favourable circumstances. The exact value of the mutual inductance between the primary and secondary coil for instance, heavily depends on their relative position. As such, uncertainties in coil alignment give rise to a certain tolerance on the mutual inductance value.