Wireless Power Transfer Systems: The Coupling Factor Impact on Different Compensation Topologies

One of the most important parameters in wireless power transfer systems is the coupling factor that plays a paramount role in wireless power transfer systems because it affects the magnetic fields between transmitter and receiver. In this paper, the impact of coupling factors in different topologies is investigated. The most important topologies are Series-Series, Parallel-Parallel and Double-Sided LCC, which have salient features due to their characteristics. Also, the critical characteristics of wireless power transfer are output power and efficiency. Therefore, the influence of coupling factor variation on different topologies at three coupling factors is scrutinized based on distinctive distances. Due to the coupling factor variation, we can see output power and efficiency variation with changing load.