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:
Feb. 28, 2012
Filed:
Jun. 16, 2010
Carsten Roed, Bjerringbro, DK;
Ole Mølgaard Jeppesen, Skjern, DK;
Keld Lyager Jensen, Skjern, DK;
Claus Ahler, Tarm, DK;
Carsten Roed, Bjerringbro, DK;
Ole Mølgaard Jeppesen, Skjern, DK;
Keld Lyager Jensen, Skjern, DK;
Claus Ahler, Tarm, DK;
Vestas Wind Systems A/S, Aarhus N, DK;
Abstract
A hydraulic system and method for controlling the brake of a wind turbine are provided. During operation of the wind turbine, pressurized working fluid in the hydraulic system is blocked from being supplied to the brake. Even if some of this fluid does reach the brake, it is drained to prevent a pressure build-up and activation. To activate the brake, this drainage is stopped and the pressurized fluid is supplied to the brake. The blocking and unblocking the pressurized working fluid may be controlled by first and second activation valves arranged in parallel in a supply line that communicates the working fluid to the brake.