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:
Mar. 17, 2020
Filed:
Jun. 24, 2016
Ntn Corporation, Osaka-shi, Osaka, JP;
Toru Takahashi, Mie, JP;
NTN CORPORATION, Osaka, JP;
Abstract
A condition monitoring system for a wind turbine generator includes an orientation sensor installed in a nacelle and configured to detect an orientation of the nacelle and a condition monitoring unit configured to receive an output from the orientation sensor and perform at least any one of recording, analysis, or transmission of a signal. The condition monitoring unit preferably detects, based on the output from the orientation sensor, the movement along the rotation direction of the nacelle associated with a torsional oscillation of the tower. The orientation sensor can also detect slow directional fluctuations that are difficult to detect using an acceleration sensor or the like, and thus, can satisfactorily detect the rotation of the nacelle associated with the torsional oscillation of the tower.