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. 18, 2010
Filed:
Sep. 03, 2003
Detlef Menke, Lotte, DE;
Detlef Menke, Lotte, DE;
General Electric Company, Schenectady, NY (US);
Abstract
A redundant and fail-safe blade system of a wind turbine includes at least one blade pitch drive () and at least two power control modules () for controlling the blade pitch drive (). The power control modules () are connected to the blade pitch drive () by a switching unit () which allows an alternative connection between the blade pitch drive () and any of the power control modules (). In operation, the blade pitch drive () is controlled by only one of the power control modules (). If a malfunction of the currently operating power control module () is detected, switching unit () provides a connection to the other power control module () to allow an ongoing operation of the wind turbine without an unplanned or forced shut-down.