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A unified analysis of converters with resonant switches

Freeland, Steve and Middlebrook, R. D. (1987) A unified analysis of converters with resonant switches. In: 1987 IEEE Power Electronics Specialists Conference. IEEE , Piscataway, NJ, pp. 20-30. https://resolver.caltech.edu/CaltechAUTHORS:20160411-162506133

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Abstract

Quasi-resonant converters are a recently introduced family of single-switch resonant converters featuring zero-current or zero-voltage switching. Recognition of the topological structure uniting these converters — and the PWM converters on which they are based — leads to general models of their dc and low-frequency ac behavior. An expression is derived that yields the dc conversion ratio of a quasi-resonant converter in terms of the well-known conversion ratio of the underlying PWM topology. A small-signal, low-frequency dynamic model is developed whose parameters also incorporate the PWM conversion ratio. The dc and ac models reveal that any quasi-resonant converter with a full-wave resonant switch has dc and low-frequency behavior identical to that of its PWM parent, with switching frequency control replacing duty ratio control. Converters with half-wave resonant switches act more like PWM converters under current programming or discontinuous conduction mode, exhibiting lossless damping in the small-signal model and output resistance at dc.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1109/PESC.1987.7077159DOIPaper
http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=7077159PublisherPaper
Additional Information:© 1987 IEEE. This work was conducted under the Power Electronics Program supported by grants from GTE Communication Systems Corp., Rockwell Inc., and EG&G Almond Instruments, Inc.
Funders:
Funding AgencyGrant Number
GTE Communication Systems CorporationUNSPECIFIED
Rockwell Inc.UNSPECIFIED
EG&C Almond InstrumentsUNSPECIFIED
Record Number:CaltechAUTHORS:20160411-162506133
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20160411-162506133
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:66063
Collection:CaltechAUTHORS
Deposited By: Kristin Buxton
Deposited On:12 Apr 2016 23:12
Last Modified:03 Oct 2019 09:53

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