Receiver Localization and Power Stabilization for Wireless Power Transfer System

In recent years, implantable medical devices have grown rapidly due to their safety, comfort, and high quality. However, the power supply and localization of implantable medical device is the key issue that restricts its development. Traditional positioning technology is not suitable for the complex environment of the human body. Based on this situation, this paper proposes a receiver localization method based on mutual inductance disturbance for wireless power transfer (WPT) system with relay coil, which can realize the two-dimensional (2-D) positioning of the receiver coil and achieve a constant power output within a certain range of motion.