Open AccessSimple compensation for lateral misalignments in resonant inductive coupling links
Author(s) -
Eteng A.A.,
Rahim S.K.A.,
Leow C.Y.,
Chew B.W.,
Vandenbosch G.A.E.
Publication year - 2016
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2016.0600
Subject(s) - wireless power transfer , maximum power transfer theorem , coupling (piping) , planar , compensation (psychology) , inductive coupling , electronic engineering , electrical impedance , transfer (computing) , wireless , impedance matching , power (physics) , electrical engineering , topology (electrical circuits) , computer science , engineering , physics , telecommunications , mechanical engineering , psychology , computer graphics (images) , quantum mechanics , parallel computing , psychoanalysis
This Letter describes a simple compensation method to reduce the transfer efficiency variation in a resonant inductive coupling (RIC) wireless power transfer link subject to lateral misalignment. The technique is based on impedance matching an RIC link such that the link operates at either over‐coupling or critical coupling within the extents of lateral misalignment. Applying the method in a test scenario led to a reduction in the range of obtained transfer efficiency values, from 45% of peak value in a conventional arrangement, to 5%. The proposed method has a potential for application in the design of free‐positioning planar wireless chargers.