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.:
Date of Patent:
Jun. 19, 2018
Filed:
May. 13, 2014
Applicant:
Fuji Electric Co., Ltd., Kanagawa, JP;
Inventor:
Hiromu Takubo, Kanagawa, JP;
Assignee:
FUJI ELECTRIC CO., LTD., Kanagawa, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02M 5/458 (2006.01); H02M 7/48 (2007.01); H02H 7/122 (2006.01); H02M 1/00 (2006.01); H02M 1/32 (2007.01);
U.S. Cl.
CPC ...
H02M 5/458 (2013.01); H02H 7/1225 (2013.01); H02M 7/48 (2013.01); H02M 2001/008 (2013.01); H02M 2001/325 (2013.01);
Abstract
Semiconductor switch elements are individually inserted between a plurality of power conversion units provided in parallel with each other through a DC link portion and a DC power supply unit for supplying DC power to each of the power conversion units to restrict the DC power supplied to the respective power conversion units. A control circuit monitors a short-circuit current occurring in each of the power conversion units and turns off the semiconductor switch element connected to the power conversion unit where the short-circuit current flows to stop the power supplied to the power conversion unit.