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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 9847730 B1

PDFFull Text
Date of Patent:
Dec. 19, 2017

Filed:

May. 28, 2014

Power converter

Applicant:

Hitachi Automotive Systems, Ltd., Hitachinaka-shi, Ibaraki, JP;

Inventors:

Akihiro Namba, Tokyo, JP;

Keisuke Fukumasu, Tokyo, JP;

Assignee:

HITACHI AUTOMOTIVE SYSTEMS, LTD., Hitachinaka-Shi, JP;

Attorney:

Foley & Lardner LLP

Primary Examiner:

Fred E Finch, III

Assistant Examiner:

Demetries A Gibson

Int. Cl.
CPC ...
H02M 3/335 (2006.01); H02M 1/14 (2006.01); H02M 7/00 (2006.01); H02M 3/28 (2006.01); H03H 7/09 (2006.01); B60L 1/00 (2006.01); H02M 1/40 (2007.01); H02M 3/337 (2006.01); H02M 1/44 (2007.01); H01F 17/06 (2006.01); H01F 27/40 (2006.01); H01F 37/00 (2006.01); H03H 1/00 (2006.01); H03H 7/01 (2006.01);
U.S. Cl.
CPC ...
H02M 3/33546 (2013.01); B60L 1/00 (2013.01); H01F 17/062 (2013.01); H01F 27/40 (2013.01); H01F 37/00 (2013.01); H02M 1/14 (2013.01); H02M 1/40 (2013.01); H02M 1/44 (2013.01); H02M 3/28 (2013.01); H02M 3/337 (2013.01); H02M 7/003 (2013.01); H03H 7/09 (2013.01); H03H 2001/0057 (2013.01); H03H 2007/013 (2013.01);
Abstract

Provided is a power converter in which a magnetic core of a noise filter can be prevented from magnetic saturation and the noise filter can be downsized. A noise filterprovided in a power converter includes: a magnetic coreformed with a single through-holeA and forming a closed magnetic circuit; first wiringhaving one endconnected to a power conversion circuit and the other end drawn out from the second opening, and running through the through-holeA from one first openingto the other second opening; second wiringhaving one end connected to the other end of the first wiringand the other enddrawn out from the first openingas a filter output end, and running through the through-holeA from the second openingto the first opening; a first capacitorprovided between the ground and a connecting portionof the first wiringand the second wiring; and the second capacitorprovided between the other endof the second wiringand the ground.

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