Assessment of the impact of transformer coupling quality on steady state characteristics of series resonant converters

In some applications, for example an electric vehicle inductive charger using a proximity type inductive coupler, the coupling quality of the transformer could be much lower than a usual isolating/scaling transformer. For such applications it is necessary for the impact of transformer coupling quality on the high frequency inverter stage to be clearly assessed. This paper, on a sound base of steady state analysis, offers an assessment concerning the series resonant converter (SRC). The results are given in normalized form and experimentally verified