Wind energy plant with a hydraulically actuated rotor brake and method for the hydraulic control of a rotor brake
AssigneeNordex Energy GmbH
InventorChristian Wedekind
Life of this patent
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Abstract
A method for controlling a hydraulically actuated rotor brake for a drive train of a wind energy plant, wherein the rotor brake is realised as an active rotor brake, which exerts a braking moment getting stronger when the hydraulic pressure increases, wherein in a first phase, a brake cylinder is pressurised with a first pressure via a first pressure reducing valve, in a second phase, the brake cylinder is pressurised with a second pressure via a second pressure reducing valve, and a switchover equipment is provided, which switches over from the first pressure to the second pressure.
Claims21
A method for controlling a hydraulically actuated rotor brake for a drive train of a wind energy plant, wherein the rotor brake is realised as an active rotor brake, which exerts a braking moment getting stronger when the hydraulic pressure increases, characterised in that in a first phase, a brake cylinder (34) is pressurised with a first pressure (pB) via a first pressure reducing valve (30), in a second phase, the brake cylinder (34) is pressurised with a second pressure (pH) via a second pressure reducing valve (46), and a switchover equipment is provided, which switches over from the first pressure to the second pressure.
A wind energy plant with a hydraulically actuated rotor brake for the drive train, which is realised as an active rotor brake which exerts a braking moment getting stronger when the hydraulic pressure increases, characterised by a first and a second brake unit, each one having a pressure reducing valve (30, 46), via which a brake cylinder (34) is pressurised with a pressure (pB, pH), and a switchover equipment, which switches over from the pressure (pB) of the first brake unit and the pressure (pH) of the second brake unit.
Dependencies are inferred from the claim text.