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:
Mar. 29, 2022
Filed:
Mar. 05, 2019
Applicant:
Toshiba Mitsubishi-electric Industrial Systems Corporation, Chuo-ku, JP;
Inventors:
Xiaochen Zhang, Chuo-ku, JP;
Toshihide Nakano, Chuo-ku, JP;
Assignee:
Primary Examiner:
Int. Cl.
CPC ...
H02M 1/34 (2007.01); H02J 9/06 (2006.01); H02M 3/335 (2006.01); H03K 17/16 (2006.01); H03K 17/567 (2006.01);
U.S. Cl.
CPC ...
H02M 1/34 (2013.01); H02J 9/06 (2013.01); H02M 3/33584 (2013.01); H03K 17/16 (2013.01); H03K 17/567 (2013.01);
Abstract
The uninterruptible power supply device includes a switch () that includes first to Nth IGBT units (Uto UN) connected in series, and a controller that turns on the switch by turning on the first to Nth IGBT units, and turns off the switch by firstly turning off the first to nth IGBT units and then turning off the (n+1)th to Nth IGBT units. Compared with the case where the first to Nth IGBT units are turned off at the same time, it is possible to reduce a surge voltage generated between the terminals of the switch ().