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:
Oct. 15, 2013
Filed:
Mar. 02, 2010
Akihiko Iwata, Tokyo, JP;
Makoto Seto, Tokyo, JP;
Masaki Yamada, Tokyo, JP;
Shigeki Harada, Tokyo, JP;
Noriyuki Matsubara, Tokyo, JP;
Takashi Kumagai, Tokyo, JP;
Akihiko Iwata, Tokyo, JP;
Makoto Seto, Tokyo, JP;
Masaki Yamada, Tokyo, JP;
Shigeki Harada, Tokyo, JP;
Noriyuki Matsubara, Tokyo, JP;
Takashi Kumagai, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
In a power conversion apparatus that boosts a solar light voltage, converts it to AC and supplies AC power to a load or system, power loss is reduced and efficiency is improved. An inverter unit, in which AC sides of three single-phase inverters receive DC power from respective sources with a voltage ratio of 1:3:9 as respective inputs are connected in series. Gradational output voltage control of an output voltage is carried out using the sum of the respective generated AC voltages. Also, a solar light voltage is boosted by a chopper circuit to generate the highest voltage DC power source. When the solar light voltage exceeds a predetermined voltage, the boosting of the chopper circuit is stopped, thereby reducing power loss due to the boosting.