Research on optimal coil configuration scheme of insulator relay WPT system

Abstract

This paper presents the optimized structure of the multi-relay coils insulator of WPT system. With the rapid development of the smart grid, on-line monitoring devices in the transmission tower have been widely used. However, the power supply problem has become an important bottleneck in the development of transmission tower intelligent sensing technology. Hence, the multi-relay coils wireless power transfer technology has been proposed to supply for the tower monitoring equipment in this paper. Compared with traditional multi-relay coils, the effects of the number, arrangement position and turns of relay coils on the performance of WPT system are further explored. The simulation results show that the operation performance of WPT can be significantly improved by optimizing the coil arrangement position and turns. Moreover, there are multiple configuration schemes that the design indexes of the system could be achieved. The experiment results show that in the 110 kV high-voltage transmission with the insulator length of 1.015 m, the transmitting power and efficiency of the WPT system could be increased to 1.81 W and 60.11% respectively by parameters optimization, which ensures the continuous and stable work of the monitoring equipment.

Frequency-hopping mechanism and control method for nonlinear parity-time-symmetric wireless power transfer systems

“…Preliminary studies have found that artificial detuning between the Rx and Tx circuits can affect the system's resonant frequency (Li and Huang, 2022;Liu et al, 2022;Wang et al, 2023). When the detuning rate is sufficiently high, the resonant frequency-hopping phenomenon occurs.…”