NDLI: Operating behavior and design of the half-cycle discontinuous-conduction-mode series-resonant-converter with small DC link capacitors

Content Provider	IEEE Xplore Digital Library
Author	Rothmund, D. Huber, J.E. Kolar, J.W.
Copyright Year	2013
Description	Author affiliation: Power Electron. Syst. Lab., ETH Zurich, Zurich, Switzerland (Rothmund, D.; Huber, J.E.; Kolar, J.W.)
Abstract	The series-resonant-converter operated in half-cycle discontinuous-conduction-mode is a realization option for bidirectional isolated DC/DC converter modules, which are key components of modern solid state transformer (SST) concepts, among other applications. In SSTs the DC/DC converters are interfacing the input and output inverter stages via DC links. For reasons of costs as well as possible application-specific restrictions on weight and volume it is beneficial to use as small DC link capacitors as possible. However, when the resonant capacitance is higher than about 10% of the DC link capacitances, the deviation of the resonant current waveform from the sinusoidal shape becomes significant and the half-cycle duration is altered from values calculated using common approaches. Here, a comprehensive discussion of this case is given and design guidelines for the choice of the resonant capacitor are derived. The importance of the effect is illustrated by applying these to a complete design example.
Starting Page	1
Ending Page	9
File Size	1537792
Page Count	9
File Format	PDF
ISSN	10935142
e-ISBN	9781467349161
DOI	10.1109/COMPEL.2013.6626447
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-06-23
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Capacitors Capacitance Equations DC-DC power converters Shape Resonant frequency Bridge circuits
Content Type	Text
Resource Type	Article

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