Investigation of receiving pot core effect on magnetic flux density in inductive coupling-based wireless power transfer

This paper studies an inductive-based wireless power transfer system for low power applications at short distances. The transferring power system has been modeled, simulated, and analyzed via finite element method. As the world becomes more dependent on technology, huge strides are being made towards improving transmission efficiency and designing sufficient transceivers. A wireless power transfer (WPT) system includes important parts such as: coil, core, and driver. This paper studies magnetic flux density of inductive coupling-based WPT system with discussions on effect of air gap and shape of receiving core. Based on the performed simulation the use of pot core as receiving core is proposed. It is concluded that this type of core can reduce dependency of magnetic flux density to air gap in receiving side. Electromagnetic results also are presented in this work.