Comparative analysis of different topologies for wireless power transfer systems

In the last years the use of the wireless power transfer systems has experienced a significant increase. In this context the study of the behavior of these systems has been the subject of debate for many researchers, in order to understand and improve their performances. This paper aims to bring a contribution in this regard. Based on previous studies, the paper makes a comparative analysis of three possible topologies met in wireless power transfer systems with inductive coupling, namely: series-series, series-parallel and parallel-parallel. Input and output quantities of the system are mainly represented here, for highlighting the conditions in which high performances are achieved. Finally important conclusions for practice are formulated.