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:
Jun. 03, 2014
Filed:
Oct. 11, 2011
Toshiya Yamada, Hyogo, JP;
Kansuke Fujii, Tokyo, JP;
Kazuyoshi Umezawa, Hyogo, JP;
Masaki Katoh, Hyogo, JP;
Motohiro Katayama, Hyogo, JP;
Toshiya Yamada, Hyogo, JP;
Kansuke Fujii, Tokyo, JP;
Kazuyoshi Umezawa, Hyogo, JP;
Masaki Katoh, Hyogo, JP;
Motohiro Katayama, Hyogo, JP;
Fuji Electric Co., Ltd., Kanagawa, JP;
Abstract
A distributed power supply system in which no simultaneous disconnection from the system occurs when a system voltage momentarily drops is provided. It includes an inverter circuit that converts a direct current power generated by a direct current power supply and that supplies the alternating current power to an alternating current power supply power system, and an inverter control circuit for carrying out PWM control of the inverter circuit, wherein the inverter control circuit includes a three-phase voltage command signal generation unit, that is configured of a three-phase fundamental wave signal generation unit that generates three-phase fundamental wave signals from two phase components of voltage detected by a voltage detector, and a third harmonic signal generation unit that adds together third harmonic components of respective phases, having a predetermined amplitude, generated based on the three-phase fundamental wave signals.