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. 30, 2012
Filed:
Feb. 09, 2010
Applicants:
Masaya Ichinose, Hitachiota, JP;
Motoo Futami, Hitachiota, JP;
Hiromitsu Sakai, Tokai, JP;
Kazuhiro Imaie, Hitachi, JP;
Inventors:
Masaya Ichinose, Hitachiota, JP;
Motoo Futami, Hitachiota, JP;
Hiromitsu Sakai, Tokai, JP;
Kazuhiro Imaie, Hitachi, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H02H 7/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
A wind power generation system includes an excessive current consumption device, an AC input of which is connected between a generator rotor and an excitation converter on a system failure to detect a DC voltage ascent of the excitation converter and operate a shunt circuit on the system failure.