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In this paper, we propose and analyze a smartwatch strap wireless power transfer (WPT) system using flexible PCB coils and magnetic field shielding materials. To ensure the sufficiency power delivery, we addressed the changes in impedance of the curved WPT coil system using 3D EM simulation and Z-parameter analysis. Using the proposed scheme, we achieved coil to coil power transfer efficiency of 50%.
This work presents the application of mathematical methods of model order reduction (MOR) for automatic generation of highly accurate, compact models for wireless power transfer (WPT) systems. A Second Order Arnoldi (SOAR) algorithm was implemented to automatically compute a compact model, which is highly accurate, but demands several orders of magnitude smaller CPU time. Thus, it can be used for...
In this paper, wireless power tranfer coil with novel winding arrangement is proposed to reduce unwanted magnetic field leakage in electronics charging application. The new winding arrangement generates single-sided magnetic field to suppress magnetic field leakage horizontally and vertically. The shielding effectiveness and wireless power transfer efficiency were compared with conventional coil which...
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