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:
May. 01, 2018
Filed:
Mar. 07, 2016
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;
Ryosuke Uda, Chiyoda-ku, JP;
Taichiro Tsuchiya, Chuo-Ku, JP;
Akihiro Matsuda, Chuo-Ku, JP;
Hisanori Taguchi, Chuo-Ku, JP;
Mitsubishi Electric Corporation, Chiyoda-ku, JP;
TOSHIBA MITSUBISHI-ELECTRIC INDUSTRIAL SYSTEMS CORPORATION, Chuo-ku, JP;
Abstract
A power conversion device includes: a positive arm and a negative arm each of which is formed by connecting a plurality of converter cells in series, the converter cells each being composed of a plurality of semiconductor switching elements and a DC capacitor; and a control circuit. An arm balance control unit in the control circuit calculates a first voltage adjustment value for balancing voltage of the DC capacitors in the positive arm and voltage of the DC capacitors in the negative arm. The control circuit adjusts an AC control command using the first voltage adjustment value, thereby calculating an AC voltage command for AC voltage to be outputted to an AC line for each phase.