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:
Jan. 05, 2016
Filed:
Apr. 25, 2011
Kenichi Azegami, Tokyo, JP;
Kiyoshi Sakamoto, Tokyo, JP;
Takuji Yanagibashi, Tokyo, JP;
Takashi Matsunobu, Tokyo, JP;
Kenichi Azegami, Tokyo, JP;
Kiyoshi Sakamoto, Tokyo, JP;
Takuji Yanagibashi, Tokyo, JP;
Takashi Matsunobu, Tokyo, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A wind turbine able to generate power irrespective of a presence of and a state of a power grid is disclosed. Specifically, a wind power generation system is provided with a wind turbine, the wind turbine including a blade that rotates in response to the wind, a generator that rotates with rotation of the blade to generate power, and an auxiliary machine that controls a pitch angle of the blade. The auxiliary machine is driven by the generated power of a downwind type wind turbine to which a permanent magnet type generator is mounted and which generates power in a state in which a blade of the downwind type wind turbine rotating in response to the wind faces downwind.