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:
Jan. 06, 2014
Toshiba Mitsubishi-electric Industrial Systems Corporation, Chuo-ku, JP;
Takashi Sugiyama, Chuo-ku, JP;
Naoki Morishima, Chuo-ku, JP;
Abstract
A power conversion device includes: a plurality of 3-level converters (to) that are multiple-connected in series to an AC power supply; and a control device () controlling operations of the plurality of 3-level converters (to). The control device () includes: a calculation unit calculating an output voltage command for the plurality of 3-level converters (to); a carrier signal generation unit generating a carrier signal; a correction unit correcting a phase of the carrier signal based on a potential variation on a DC neutral point bus (); and a pulse width modulation control. unit delaying the phase by a prescribed amount based on the carrier signal having the phase corrected by the correction unit as a reference phase, to generate a plurality of carrier signals, and comparing the output voltage command with each of the plurality of carrier signals to generate a control command for each of the plurality of 3-level converters (to).