Consideration of Series-Series and Series-Parallel Topology in Perspective of Dynamic Resonant Inductive Coupling Based Wireless Charging

Abstract

It is well apparent, compensation is essential in loosely coupled system for efficient power transfer. However, selection of compensating topology in Resonant Inductive Coupling based Wireless Charging System (RIC-WCS) is very much application dependant. Among different existing topologies, Series-Series (SS), Series-Parallel (SP) are deemed to be appropriate and more frequently used in charging scenarios. The choice of these topologies (SS & SP) in perspective of charging conditions under varied receiver coil position in relative to the transmitting coil is evaluated in this article. In addition to this, the implicit relation between Power Transfer Efficiency(PTE) and Power Delivered to Load(PDL) on varying coupling coefficient resulted due to the change in position of the receiving coil under varied frequency have been illustrated through circuit model analysis and theoretical simulation.