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Modelling of wireless power transfer links based on capacitive coupling
Author(s) -
Dionigi Marco,
Mongiardo Mauro,
Monti Giuseppina,
Perfetti Renzo
Publication year - 2016
Publication title -
international journal of numerical modelling: electronic networks, devices and fields
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.249
H-Index - 30
eISSN - 1099-1204
pISSN - 0894-3370
DOI - 10.1002/jnm.2187
Subject(s) - wireless power transfer , capacitance , coupling (piping) , power (physics) , maximum power transfer theorem , capacitive coupling , impedance matching , capacitive sensing , matching (statistics) , electrical efficiency , electrical impedance , topology (electrical circuits) , wireless , input impedance , computer science , electrical engineering , electronic engineering , mathematics , telecommunications , physics , engineering , voltage , quantum mechanics , electrode , mechanical engineering , statistics
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.