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:
Apr. 10, 2012
Filed:
Feb. 20, 2008
Akihiko Iwata, Tokyo, JP;
Hiroshi Ito, Tokyo, JP;
Hirofumi Akagi, Tokyo, JP;
Hideaki Fujita, Tokyo, JP;
Takushi Jimichi, Tokyo, JP;
Akihiko Iwata, Tokyo, JP;
Hiroshi Ito, Tokyo, JP;
Hirofumi Akagi, Tokyo, JP;
Hideaki Fujita, Tokyo, JP;
Takushi Jimichi, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Tokyo Institute of Technology, Tokyo, JP;
Abstract
A three-phase inverter circuit including a DC portion including capacitors connected between output terminals of a solar battery and single-phase inverters connected in series with AC output lines of the three-phase inverter circuit that together constitute an inverter section, the inverter section being connected to a three-phase power system. The three-phase inverter circuit outputs a reverse-polarity voltage pulse during a period within each of basic voltage pulses of which pulsewidth corresponds to a half cycle every half cycle of a system voltage. A power burden born by the individual single-phase inverters in each half cycle is made approximately zero and the individual single-phase inverters make a correction for subtracting a common voltage from target output voltages of individual phases during the period when the reverse-polarity voltage pulse is generated.