NDLI: Inductor geometries with significantly reduced height

Content Provider	IEEE Xplore Digital Library
Author	Han Cui Ngo, K.D.T.
Copyright Year	2013
Description	Author affiliation: Bradley Dept. of Electr. & Comput. Eng., Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA (Han Cui; Ngo, K.D.T.)
Abstract	The “constant-flux” concept is leveraged to achieve high magnetic-energy density, leading to inductor geometries with height significantly lower than that of conventional products. Techniques to shape the core and to distribute the winding turns to shape a desirable field profile is described for the two basic classes of magnetic geometries, those with the core outside the winding and those with the core inside the winding. A relatively constant flux distribution is advantageous not only from the density standpoint, but also from the thermal standpoint via the reduction of hot spots, and from the reliability standpoint via the suppression of flux crowding. Design and fabrication results are delineated for a core-outside inductor with same specifications as a commercial counterpart, but with smaller footprint as well as smaller height. Prototype cores and windings were milled from powder-iron disks and copper sheets, respectively. The volume of the prototyped constant-flux inductor is 66% the volume of a commercial inductor with same inductance and dc resistance.
Sponsorship	IEEE Power Electron. Soc.
Starting Page	1644
Ending Page	1649
File Size	913798
Page Count	6
File Format	PDF
ISBN	9781467343541
ISSN	10482334
e-ISBN	9781467343558
e-ISBN	9781467343534
DOI	10.1109/APEC.2013.6520517
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-03-17
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Inductors Windings Magnetic cores Inductance Magnetic flux Resistance Prototypes inductor uniform flux distribution constant-flux high energy density low profile
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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