Modelling of wireless power transfer links based on capacitive coupling. (18th August 2016)

• Record Type: Journal Article
• Authors: Dionigi, Marco; Mongiardo, Mauro; Monti, Giuseppina; Perfetti, Renzo
• Is Part Of: International journal of numerical modelling. Volume 30:Number 3/4(2017)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2016-08-18
• Subjects: wireless power transfer -- capacitive coupling -- electric field coupling -- network theory; Electric networks -- Mathematical models -- Periodicals; Electronics -- Mathematical models -- Periodicals; 621.3011
• DOI: 10.1002/jnm.2187
• Languages: English
• ISSNs: 0894-3370

Abstract

Summary: By using network theory, a wireless power transfer network based on coupled capacitance, that is, on electric field coupling, is numerically investigated. Three possible solutions of interest are considered: one that maximizes efficiency, one that maximizes the power delivered to the load and one that realizes power matching (conjugate matching). In each case, at a selected frequency, the optimal source/load impedances are derived in closed form. It is shown that maximum efficiency solution has the possibility of achieving almost unitary efficiency. It is also shown that, as the efficiency is increased, the power delivered to the load is decreased. Copyright © 2016 John Wiley & Sons, Ltd.