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:
Dec. 29, 2020
Filed:
Mar. 29, 2017
Applicant:
Toshiba Mitsubishi-electric Industrial Systems Corporation, Chuo-ku, JP;
Inventors:
Naoki Yonemura, Chuo-ku, JP;
Taichiro Tsuchiya, Chuo-ku, JP;
Assignee:
Primary Examiner:
Int. Cl.
CPC ...
H02M 1/32 (2007.01); H02J 3/00 (2006.01); G01R 31/3187 (2006.01); G05F 1/70 (2006.01); H02J 3/18 (2006.01); H02M 7/483 (2007.01); H02H 3/33 (2006.01);
U.S. Cl.
CPC ...
H02J 3/0012 (2020.01); G01R 31/3187 (2013.01); G05F 1/70 (2013.01); H02H 3/335 (2013.01); H02J 3/1857 (2013.01); H02M 1/32 (2013.01); H02M 2007/4835 (2013.01);
Abstract
In a power conversion device, an inverter () of each of three arms (Ato A) is controlled such that circulating current (Iz) of three arms (Ato A) follows a reference (Izrt) in a test period (times tto t) in which a power system () is cut off from the three arms (Ato A), and whether the power conversion device is normal is determined based on circulating current (Iz) in the test period. Whether the power conversion device is normal therefore can be determined without affecting the power system ().