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:
May. 31, 2011
Filed:
May. 28, 2008
Masaya Ichinose, Hitachiota, JP;
Shinya Oohara, Hitachi, JP;
Motoo Futami, Hitachiota, JP;
Mitsugu Matsutake, Hitachi, JP;
Hiromitsu Sakai, Tokai, JP;
Masaya Ichinose, Hitachiota, JP;
Shinya Oohara, Hitachi, JP;
Motoo Futami, Hitachiota, JP;
Mitsugu Matsutake, Hitachi, JP;
Hiromitsu Sakai, Tokai, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A wind power generation system temporarily stops a power converter when a system disturbance occurs, and reactivates the power converter after detecting a solution of the problem of an influence (overcurrent of a stator, direct current component of a stator, overcurrent of a rotor, etc.) of a fault occurring in a doubly-fed generator during a system fault. During a system fault, a reactive current can be safely output from a doubly-fed generator to an electric power system without destroying equipment of the wind power generation system.