An Application of a Wireless Power Transfer at Low Frequency Range

Abstract

In this study, a low frequency wireless power transfer (LFWPT) device has been designed and implemented. The aim of investigation of low frequency system is to eliminate the un-healthy situation due to non-ionized radiation of the high frequency regimes. The transmitter uses a special winding to transmit the electromagnetic signals to the environment, especially for a few centimeters distance. The receiver winding, which is the same with the transmitter winding catches the signal and stores it in capacitor. The system uses maximum 17,649 Hz to transmit the signal, that is fairly low compared to the other studies in the literature. A DC-AC inverter is used to obtain high frequency signals for the transmitter circuit. The experiments have proven that the receiving antenna can get 1 V amplitude from the transmitted peak-to-peak amplitude of 140 V at the operation frequency.