Reduction in Human Interaction with Magnetic Resonant Coupling WPT Systems with Grounded Loop

Wireless power transfer (WPT) systems have attracted considerable attention in relation to providing a reliable and convenient supply. Among the challenges this area are maintaining performance of WPT system with presence human body minimizing induced physical quantities body. This study proposes magnetic resonant coupling (MRC-WPT) that utilizes resonator grounded loop mitigate its interaction achieve high-efficiency at short range. Our proposed is based on reduce leakage electric field, resulting less As result, transmission efficiency higher than 70% achieved distance approximately 25 cm. Under maximum-efficiency conditions system, use reduces peak spatial-average specific absorption rate (psSAR), whole-body averaged SAR by 43.6%, 69.7%, 65.6%, respectively. The maximum permissible input values for 40 33.5 kW, as prescribed International Commission Non-Ionizing Radiation Protection (ICNIRP) guidelines comply limits local average SAR.