Automatic Resonance Compensation for Efficient WPT via Magnetic Resonance Coupling Using Flexible Coils

With the recent proliferation of mobile and wearable devices, wireless power transfer (WPT) has gained attention as an up-and-coming technology to charge these devices. In particular, WPT via magnetic resonance coupling attracted considerable interest for day-to-day applications since it is harmless human body relatively long transmission distance. However, was difficult be installed into environment (e.g., utensils furniture) flexible objects in living space use coils leads decrease efficiency due collapse caused by coil deformation. Therefore, this study proposes automatic compensation system that automatically compensates inductance variation deformation using a circuit can electronically control equivalent capacitance (a capacity circuit), thereby maintains resonant state. An experiment conducted verify whether maintained when deformed. The results indicated nearly high ideal state well highly responsive control, therefore, proposed good potential real-world applications.