Enhancing Resilience of WPT Systems to Lateral Misalignment Using Near-Field Coil Antennas

The article presents an experimental validation of the author’s hypothesis stating the Tx coil antenna, capable of forming a widespread uniform magnetic field, attains constant output current (C-O-C) and constant output voltage (C-O-V). Aiming this, a previously published NUDCT Tx coil antenna was adopted to form a uniform magnetic field. Additionally, with the aid of in-house high-frequency inverters and rectifier circuits, the authors experimentally attempted to prove C-O-C and C-O-V. As a result, this eliminates complex control circuits, higher-order compensation networks, and additional dc-dc converters at the Rx side. Moreover, the Tx coil antenna is fabricated using three different materials to validate the enhancement of dc-dc efficiency by employing low-loss materials without altering the optimized parameters of the Tx coil antenna.