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:
Nov. 29, 2016
Filed:
Feb. 03, 2012
Norikazu Kanao, Toyama, JP;
Kansuke Fujii, Kanagawa, JP;
Toshiya Yamada, Kanagawa, JP;
Motohiro Katayama, Kanagawa, JP;
Norikazu Kanao, Toyama, JP;
Kansuke Fujii, Kanagawa, JP;
Toshiya Yamada, Kanagawa, JP;
Motohiro Katayama, Kanagawa, JP;
HOKURIKU ELECTRIC POWER COMPANY, Toyama, JP;
FUJI ELECTRIC CO., LTD., Kanagawa, JP;
Abstract
The disclosed distributed power supply system does not become disconnected from a grid simultaneously with others when the grid voltage falls instantaneously. In a distributed power supply device which controls an inverter circuitbased on a control signal obtained by comparing a predetermined carrier signal and voltage command signals of three phases and which converts DC power to AC power and supplies the AC power to a power grid of a three-phase AC power supply, fundamental wave signals of three phases are generated from a grid voltage of the three-phase AC power supply. A reference cosine wave signal is generated from the fundamental wave signals of three phases. A third harmonic signal is generated from the reference cosine wave signal and the fundamental wave signals of three phases. The three-phase fundamental wave signals and the third harmonic signal are added to generate voltage command signals of three phases.