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:
Sep. 05, 2017
Filed:
May. 19, 2015
Mitsubishi Electric Corporation, Chiyoda-ku, JP;
Toshiba Mitsubishi-electric Industrial Systems Corporation, Chuo-Ku, JP;
Toshiyuki Fujii, Chiyoda-ku, JP;
Kaho Mukunoki, Chiyoda-ku, JP;
Osamu Mori, Chiyoda-ku, JP;
Shinzo Tamai, Chuo-Ku, JP;
Sadao Funahashi, Chuo-Ku, JP;
Yasuhiko Hosokawa, Chuo-Ku, JP;
Kotaro Higashi, Chuo-Ku, JP;
Mitsubishi Electric Corporation, Chiyoda-ku, JP;
TOSHIBA MITSUBISHI-ELECTRIC INDUSTRIAL SYSTEMS CORPORATION, Chuo-ku, JP;
Abstract
In a power converter which performs power conversion between plural-phase AC and DC, variation in voltage of the DC capacitor in each converter cell is detected, and when the variation exceeds a predetermined value, a DC voltage command value as a control target value in a DC voltage control unit which controls DC voltage between DC buses is corrected by being increased or decreased. Thus, when AC grid failure occurs, the capacitor voltage of each converter cell is maintained and the operation continuity is improved.