NDLI: Modeling and Analysis of Class EF and Class E/F Inverters With Series-Tuned Resonant Networks

Content Provider	IEEE Xplore Digital Library
Author	Aldhaher, S. Yates, D.C. Mitcheson, P.D.
Copyright Year	1986
Abstract	Class EF and Class E/F inverters are hybrid inverters that combine the improved switch voltage and current waveforms of Class F and Class F-1 inverters with the efficient switching of Class E inverters. As a result, their efficiency, output power and power output capability can be higher in some cases than the Class E inverter. Little is known about these inverters and no attempt has been made to provide an in depth analysis on their performance. The design equations that have been previously derived are limited and are only applicable under certain assumptions. This paper is the first to provide a comprehensive set of analytical analysis of Class EF and Class E/F inverters. The Class EF₂ inverter is then studied in further detail and three special operation cases are defined that allow it to either operate at maximum power-output capability, maximum switching frequency, or maximum output power. Final design equations are provided to allow for rapid design and development. Experimental results are provided to confirm the accuracy of the performed analysis based on a 23-W Class EF₂ inverter at 6.78-MHz and 8.60-MHz switching frequencies. The results also show that the Class EF₂ inverter achieved an efficiency of 91% compared to a 88% efficiency when operated as a Class E inverter.
Sponsorship	IEEE Power Electronics Society
Starting Page	3415
Ending Page	3430
Page Count	16
File Size	1533974
File Format	PDF
ISSN	08858993
Volume Number	31
Issue Number	5
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2016-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Inverters Switches Inductors Switching frequency Mathematical model Inductance Power generation high frequency inverters Class EF inverters Class E inverters high-frequency inverters Class EF inverters Class E inverters
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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