Low-Frequency Vibration Wireless Power Transmission System Based on Dynamic Response

High frequency (MHz) wireless power transmission systems often face safety concerns, including detuning, parasitic heating and, severe metal interference. In this paper, a low-frequency vibration wireless power transmission system based on dynamic response is proposed to transfer power under low frequency conditions (<1 kHz) and enable better penetration of energy through conductive media, such as metal. A piezoelectric cantilever-based transmitter and receiver is proposed for the wireless power transmission system. The two magnets are attached to the free end of the transmitter and receiver. The platform is built for experimental verification. Experimental studies show that at an operating frequency of about 104 Hz, the maximum power transmission is approximately 43 mW. The feasibility of applying the system to metal environments and biomedical fields are experimentally tested and verified.