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.

Date of Patent:
Dec. 01, 2015

Filed:

Mar. 05, 2014
Applicant:

Kabushiki Kaisha Toshiba, Minato-ku, JP;

Inventors:

Shoichiro Tanaka, Kuwana, JP;

Masami Hirata, Yokkaichi, JP;

Hideki Hisada, Yokkaichi, JP;

Assignee:

KABUSHIKI KAISHA TOSHIBA, Minato-ku, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05K 7/20 (2006.01); H02M 7/53 (2006.01);
U.S. Cl.
CPC ...
H05K 7/20236 (2013.01); H02M 7/53 (2013.01); H05K 7/20927 (2013.01);
Abstract

In general, according to an embodiment, a power conversion apparatus includes a first inverter, second inverter and a cooler. The first inverter includes a plurality of semiconductor devices connected together in parallel per phase. In the second inverter, the number of parallel-connected semiconductor devices are two or more per phase, the semiconductor devices are connected together in parallel and the number of parallel-connected semiconductor devices in the second inverter is fewer than that in the first inverter per phase. The semiconductor devices in the first inverter are installed in an area of a cooling surface of the cooler positioned over a first channel. The semiconductor devices in the second inverter are installed in an area of the cooling surface positioned over the second channel.


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