| Wireless power transfer (WPT) technology utilizes energy-contained fields to deliver electric power from the transmitter to the receiver side, removing the direct metal-to-metal contact .WPTSs, in general, can be classified into inductive power transfer systems (IPTSs) , coupled magnetic resonance systems (CMRSs) , and capacitive power transfer systems (CPTSs). This paper proposes a combined inductive and capacitive wireless power transfer (WPT) system.The simplicity and low cost of capacitive interfaces
makes them very attractive for wireless charging stations.The working principle of the IPT+CPT system is analyzed to derive the expression of the output power and the system design process. Capacitive power transfer (CPT)utilizes high-frequency electric fields to transfer electric power, which has three distinguishing advantages: negligible eddy-current loss, relatively low cost and weight, and excellent misalignment performance.IPT is most common and is applicable to many power levels and gap distances.lnductive power transfer (IPT), which is based on magnetic field coupling.This paper introduces a DC–DC buck converteron the secondary side of the capacitive power transfer system. |
