Open AccessMaintaining middle zero voltage switching operation of parallel–parallel tuned wireless power transfer system under bifurcation
Author(s) -
Wang Bob,
Hu Aiguo Patrick,
Budgett David
Publication year - 2014
Publication title -
iet power electronics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.637
H-Index - 77
eISSN - 1755-4543
pISSN - 1755-4535
DOI - 10.1049/iet-pel.2013.0250
Subject(s) - wireless power transfer , maximum power transfer theorem , power (physics) , voltage , control theory (sociology) , electromagnetic coil , controller (irrigation) , computer science , wireless , electrical engineering , engineering , physics , control (management) , telecommunications , quantum mechanics , artificial intelligence , agronomy , biology
It is well known that when a wireless power transfer system bifurcates, the maximum power transfer capability reduces significantly. This research proposes a dynamic zero voltage switching (ZVS) controller to track the middle ZVS operation curve so as to maintain the peak power potential the system can deliver. A prototype wireless power transfer system has been developed, and it has found that the system can deliver 10 W power required to drive an implantable heart pump with a reduced input voltage, increased coil separation and improved end‐to‐end power efficiency.