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|Title:||Design and Development of a Class EF2 Inverter and Rectifier for Multi-megahertz Wireless Power Transfer Systems|
|Keywords:||Science & Technology;Technology;Engineering, Electrical & Electronic;Engineering;Class-EF inverters;class-EF rectifiers;wireless power transfer (WPT);INDUCTIVE LINKS;AMPLIFIERS;Electrical & Electronic Engineering|
|place:||Engineering & Physical Science Research Council (E;Engineering & Physical Science Research Council (E|
|Description:||This paper presents the design and implementation of a Class EF2 inverter and Class EF2 rectifier for two -W wireless power transfer (WPT) systems, one operating at 6.78 MHz and the other at 27.12 MHz. It will be shown that the Class EF2 circuits can be designed to have beneficial features for WPT applications such as reduced second-harmonic component and lower total harmonic distortion, higher power-output capability, reduction in magnetic core requirements and operation at higher frequencies in rectification compared to other circuit topologies. A model will first be presented to analyze the circuits and to derive values of its components to achieve optimum switching operation. Additional analysis regarding harmonic content, magnetic core requirements and open-circuit protection will also be performed. The design and implementation process of the two Class-EF2-based WPT systems will be discussed and compared to an equivalent Class-E-based WPT system. Experimental results will be provided to confirm validity of the analysis. A dc-dc efficiency of 75% was achieved with Class-EF2-based systems.|
EP/K034804/1 PO: FENG1533856
|Type Of Material:||Other|
|Appears in Collections:||Electrical and Electronic Engineering|
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