Waveguide-mode wireless power transfer in shielded space with aperture plane

Abstract

This paper introduces a novel method of waveguide-mode wireless power transfer (WPT) in a shielded space with an aperture plane. First, it is shown that the simplified model of the engine compartment behaves as a ridge waveguide. Next, the WPT efficiency at the resonant frequency of the dominant mode in the ridge waveguide is discussed using a monopole probe and a helical probe. The results obtained from these simulations and measurements indicate a possibility that WPT efficiency can be improved by our method. Finally, it is experimentally demonstrated that the line-ofsight and non-line-of-sight wireless sensors can operate using our method.

Study on the Vibration Mechanism of the Relay Coil in a Three-Coil WPT System

“…13 − ξ 2 = 0 was obtained from Equations (5), (6), and (9); (4) Far from equilibrium. In the over-coupled region, the output power of the WPT system achieves the maximum output power at the two splitting frequencies and not at the natural resonant frequency.…”

“…Only when the coils are tuned to a particular resonance frequency can the coils transmit electricity through the air and around an obstacle with an acceptable level of efficiency. WPT has replaced conventional conductive battery chargers and has even been used to charge various portable consumer electronic, medical, and industrial devices [6][7][8].…”