Real-time Optimization of Coil Positioning in Wireless Power Transfer System for Artificial Heart

Abstract

An artificial heart system is clinically used for the blood circulation of the heart failure patient. The power of it is supplied via a drive line from the outside of the body. In order to eliminate the drive line from the patient, we propose a wireless poser transfer system with magnetic resonant coupling. The system will be placed inside the room and track the motion of the patient with a receiver coil. According to the information of patient's motion, the position and posture of a movable transmitter coil and a repeater coil are actively controlled in order to keep the high transfer efficiency. In this study, we have developed a real-time calculation algorithm to obtain the optimal coil positions and postures. Then the calculation time and effectiveness of the proposed algorithm were evaluated.