Single-tube copper coil (STCC) in near-field wireless power transfer (WPT) is presented in this study to operate low-power devices (LPDs) without depending on a connection to a power source or battery. The transfer distance was increased to 40 cm that facilitates the employment of the STCC system in a good area.. The performance of the proposed system was investigated in terms of coupling coefficient, mutual inductance, transfer power and efficiency. The system is capable of operating LPDs based on magnetic resonator coupling WPT. A Royer oscillator zero voltage source was used as a power amplifier. In addition, the transmitter and receiver coils were used without a shield to increase the transfer distance. Three load resistors were investigated 50, 100 and 150 Ω at distances of 1–40 cm. The most suitable response appeared when using 50 Ω, with maximum transfer efficiencies of 96.3%, 60% and 30% resulting in power transfer of 11.6, 7 and 4 W at distances of 1, 10 and 30 cm, respectively. This system is suitable to operate devices with low power consumption at distances between 1 and 30 cm, such as mobile devices and household appliances. In addition, this method is compared with previous literature.
Volume 11 | 01-Special Issue
Pages: 1818-1827