Propagation Analysis Using Plane Coupler for 2D Wireless Power Transmission Systems

Shinoda, Hiroshi; Terada, Takahide

doi:10.1587/transele.e96.c.1041

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“…Two-dimensional wireless power transfer (2-D WPT) has been attracting research attention as a contactless and positioning-free power supply [1,2,3,4,5,6]. A capacitive technique can expand the feeding area by enlarging the TX electrode.…”

Section: Introductionmentioning

confidence: 99%

Null-free two-dimensional capacitive wireless power transfer based on inversion of electric field distribution

et al. 2021

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One of the crucial challenges of capacitive two-dimensional wireless power transfer (2-D WPT) is the variation in transfer efficiency depending on the RX position. In this paper, we suppress this variation using an inversion of the electric field distribution. First, we analyze the E-field distribution on a comb-like TX electrode for use in capacitive 2-D WPT. The null points are generated on the comb-like electrode, and their positions are identified by deriving the input admittance. Then, we confirm that they are inverted by open-/short-termination switching. Finally, the variation in the power transfer efficiency is suppressed by switching the termination condition.

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Section: Introductionmentioning

confidence: 99%