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:
Jul. 18, 2017
Filed:
Jul. 02, 2014
Mitsubishi Electric Corporation, Chiyoda-ku, JP;
Toshiba Mitsubishi-electric Industrial Systems Corporation, Chuo-ku, JP;
Takeshi Kikuchi, Chiyoda-ku, JP;
Kaho Mukunoki, Chiyoda-ku, JP;
Toshiyuki Fujii, 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
An electric power conversion device includes a power conversion unit and a converter control unit. The power conversion unit includes three arms connected to an AC circuit. The converter control unit includes a phase DC voltage control unit, a negative sequence current command value calculation unit, an output current control unit, a circulating current control unit, a voltage command value calculation unit, and a gate signal generation unit, and imbalance of cell DC capacitor voltages among phases due to grid imbalance is controlled by circulating current and negative sequence current.