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This paper studies a capacitive coupling wireless power transfer (CCWPT) for charging electric vehicles by using the dielectric substrate outside of a vehicle. The CCWPT can replace a conventional inductive coupling wireless power transfer because it has less electro-magnetic interference (EMI) and heat dissipation. However, since the CCWPT has limitation on transferring high power due to too small...
The conjugate image theory provides a methodology to determine the optimal circuit for a given wireless link. In this work, we compare the application of this theory between inductive and capacitive wireless power transfer, extended to non-symmetric configurations. We apply the conjugate image theory for mixed coupling and demonstrate that the results for inductive and capacitive coupling can be deduced...
In this paper, we presented a novel pixelated structure for electrode plates and initiate an innovative design of capacitive couplers for wireless charging. This research aims to improve the poor performance of traditional electrode plates in the literature when the plates are rotated 90 degrees. This research utilized optimization technique to design the distribution of the positive (and negative)...
The authors have proposed a new capacitive power transfer (CPT) system using one-pulse switching active capacitor (OPSAC). The proposed system improves transfer power without LC resonance so that it is robust against parameter change. The one of advantages of OPSAC is easy realization of cascade connection in order to enhance transfer power. In the past, CPT system with five-stage OPSAC was successfully...
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