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Design of single-winding energy-storage reactors for dc-to-dc converters using air-gapped magnetic-core structuresA procedure is presented for designing air-gapped energy-storage reactors for nine different dc-to-dc converters resulting from combinations of three single-winding power stages for voltage stepup, current stepup and voltage stepup/current stepup and three controllers with control laws that impose constant-frequency, constant transistor on-time and constant transistor off-time operation. The analysis, based on the energy-transfer requirement of the reactor, leads to a simple relationship for the required minimum volume of the air gap. Determination of this minimum air gap volume then permits the selection of either an air gap or a cross-sectional core area. Having picked one parameter, the minimum value of the other immediately leads to selection of the physical magnetic structure. Other analytically derived equations are used to obtain values for the required turns, the inductance, and the maximum rms winding current. The design procedure is applicable to a wide range of magnetic material characteristics and physical configurations for the air-gapped magnetic structure.
Document ID
19780043820
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Ohri, A. K.
(Duke Univ. Durham, NC, United States)
Wilson, T. G.
(Duke Univ. Durham, NC, United States)
Owen, H. A., Jr.
(Duke University Durham, N.C., United States)
Date Acquired
August 9, 2013
Publication Date
September 1, 1977
Publication Information
Publication: IEEE Transactions on Magnetics
Volume: MAG-13
Subject Category
Electronics And Electrical Engineering
Accession Number
78A27729
Funding Number(s)
CONTRACT_GRANT: NGL-34-001-001
Distribution Limits
Public
Copyright
Other

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