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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 10461625 B1

PDFFull Text
Date of Patent:
Oct. 29, 2019

Filed:

Aug. 19, 2016

Power conversion device and control method for same

Applicant:

Sumitomo Electric Industries, Ltd., Osaka-shi, JP;

Inventors:

Toshiaki Okumura, Osaka, JP;

Naoki Ayai, Osaka, JP;

Assignee:

Sumitomo Electric Industries, Ltd., Osaka-shi, JP;

Attorneys:

Baker Botts L.L.P.

Michael A. Sartori

Primary Examiner:

Rexford N Barnie

Assistant Examiner:

Toan T Vu

Int. Cl.
CPC ...
H02J 1/10 (2006.01); H02J 3/38 (2006.01); H02M 1/08 (2006.01); H02S 40/32 (2014.01); H02M 1/44 (2007.01); H02M 3/156 (2006.01); H02M 7/5387 (2007.01); H02M 3/158 (2006.01); H02J 3/32 (2006.01); H02J 7/35 (2006.01); G05F 1/67 (2006.01); H02M 1/00 (2006.01); H02M 7/48 (2007.01);
U.S. Cl.
CPC ...
H02M 1/08 (2013.01); H02J 3/32 (2013.01); H02J 3/383 (2013.01); H02J 3/385 (2013.01); H02J 7/35 (2013.01); H02M 1/44 (2013.01); H02M 3/156 (2013.01); H02M 3/1584 (2013.01); H02M 7/53871 (2013.01); H02S 40/32 (2014.12); G05F 1/67 (2013.01); H02M 7/4826 (2013.01); H02M 2001/007 (2013.01); H02M 2001/0048 (2013.01);
Abstract

A control unit of a power conversion device calculates a current target value and a voltage target value for a DC/AC converter on the basis of an output current target value, to control the DC/AC converter, and calculates a current target value for the DC/DC converter on the basis of the current target value and the voltage target value, and a voltage target value for the DC/DC converter, to control the DC/DC converter, thereby controlling output of an AC power. The control unit selects, as the voltage target value for the DC/DC converter, a greatest value at a present time, from among a DC voltage value of the DC power supply, an absolute value of a voltage target value for an AC side of the DC/AC converter, and a DC voltage lower limit value which is a predetermined value smaller than a peak value of the absolute value.

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