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:
Oct. 31, 2017
Filed:
Jul. 23, 2015
Mitsubishi Electric Corporation, Chiyoda-ku, JP;
Toshiba Mitsubishi-electric Industrial Systems Corporation, Chuo-Ku, JP;
Kaho Mukunoki, Chiyoda-ku, JP;
Toshiyuki Fujii, Chiyoda-ku, JP;
Miwako Tanaka, 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
A power conversion device performs power conversion between three-phase AC, and DC, and includes a positive arm and a negative arm for each phase, each of which includes one or more converter cells connected in series. A voltage command generating unit in a control device includes an AC current control unit, a circulating current control unit, and a command distributing unit, and generates a positive arm voltage command and a negative arm voltage command for each phase. In the circulating current control unit, a compensator calculates a first control command so that circulating current for each phase approaches a circulating current command value, a suppression unit generates a second control command so as to suppress a 2f component and a 4f component contained in the first control command, and then the first control command and the second control command are combined to generate a circulation control command.