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Title: Coupled-inductor DC-DC power converter

Abstract

A DC-to-DC power converter device has a common magnetic core structure that serves the functions of both transformer device and output inductor by integrating each into the common core. The transformer device has primary and secondary windings integrated into a first leg structure of the magnetic core, and the output inductor device has an output inductor winding integrated into a second leg structure of the magnetic core, the inductor winding structure for delivering output current to a load when a periodically switched input voltage is applied across the primary winding structure. The winding polarities of the transformer secondary winding structure and of the output inductor winding structure provide oppositely oriented polarities of electromotive force (EMF) to substantially reduce an output current ripple to an output load when delivering power through the transformer, through the output inductor and into the output load. A third leg structure of the common magnetic core allows magnetic flux passing through the transformer leg structure to partially magnetically couple to flux passing through the inductor leg structure, thereby allowing adjustment of the output voltage at which output current ripple is minimized.

Inventors:
; ; ;
Publication Date:
Research Org.:
International Business Machines Corp., Armonk, NY (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1498494
Patent Number(s):
10,186,949
Application Number:
15/808,804
Assignee:
International Business Machines Corporation (Armonk, NY)
DOE Contract Number:  
B621073
Resource Type:
Patent
Resource Relation:
Patent File Date: 2017 Nov 09
Country of Publication:
United States
Language:
English
Subject:
24 POWER TRANSMISSION AND DISTRIBUTION

Citation Formats

Ferencz, Andrew, Takken, Todd E., Zhang, Xin, and Yao, Yuan. Coupled-inductor DC-DC power converter. United States: N. p., 2019. Web.
Ferencz, Andrew, Takken, Todd E., Zhang, Xin, & Yao, Yuan. Coupled-inductor DC-DC power converter. United States.
Ferencz, Andrew, Takken, Todd E., Zhang, Xin, and Yao, Yuan. Tue . "Coupled-inductor DC-DC power converter". United States. https://www.osti.gov/servlets/purl/1498494.
@article{osti_1498494,
title = {Coupled-inductor DC-DC power converter},
author = {Ferencz, Andrew and Takken, Todd E. and Zhang, Xin and Yao, Yuan},
abstractNote = {A DC-to-DC power converter device has a common magnetic core structure that serves the functions of both transformer device and output inductor by integrating each into the common core. The transformer device has primary and secondary windings integrated into a first leg structure of the magnetic core, and the output inductor device has an output inductor winding integrated into a second leg structure of the magnetic core, the inductor winding structure for delivering output current to a load when a periodically switched input voltage is applied across the primary winding structure. The winding polarities of the transformer secondary winding structure and of the output inductor winding structure provide oppositely oriented polarities of electromotive force (EMF) to substantially reduce an output current ripple to an output load when delivering power through the transformer, through the output inductor and into the output load. A third leg structure of the common magnetic core allows magnetic flux passing through the transformer leg structure to partially magnetically couple to flux passing through the inductor leg structure, thereby allowing adjustment of the output voltage at which output current ripple is minimized.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2019},
month = {1}
}

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