Power Efficiency Analysis of Wireless Power Transfer System for Automotive Seats Based on Finite Element Method

This study investigated the feasibility of applying inductive wireless power transfer technology to ensure a stable power supply for autonomous vehicle seats across various operating conditions. The circular and square coils exhibited efficiencies of approximately 30% and 70% at the lowest point, respectively, with the square coil predicted to be advantageous for coil movement. The coil arrangement exhibited a similar trend as the previous results, with power efficiency decreasing with increasing gap. Furthermore, a significant slope in power efficiency concerning the normalized distance for the B-type suggests that the A-type is advantageous in terms of coil stability and power efficiency. Implementing the proposed wireless power transfer system, offering an efficiency of at least 90%, onto the sheet can ensure sufficient freedom of movement for sheet displacement.