Abstract: A method for operating a mechanical emergency brake for a wind turbine is disclosed. The method includes providing a mechanical emergency brake for a wind turbine comprising a spring energy storage; measuring a variable indicative of a holding torque of a pitch drive motor; comparing said measured value of said variable with a desired value of said variable; and shutting down said wind turbine if the comparison of said actual with said desired value reveals that the wind turbine is in a fault condition.

Abstract: A seal arrangement for sealing a bearing comprising a first component and a second component which are rotatably movable with respect to each other is provided. The seal arrangement includes brush seal having an annular brush body carried by the first component and a bundle of resiliently bendable bristles. The brush seal is adapted to maintain a sealing condition when the first and second component are moved relative to each other in a non-rotational manner. Further, a brush seal and a wind turbine having a brush seal are provided.

Abstract: A mechanical emergency brake for a wind turbine is provided, said mechanical emergency brake comprising a spiral spring with a loop at its outer end, a cassette for accommodating said spring and a casing for receiving said cassette and said spring, wherein said casing comprises a retention pin to which the loop of the spring can be fixed.

Abstract: The present patent application concerns wind turbine having a rotor with a first rotor blade and a pitch control system with a controller and a first drive system for adjusting a pitch angle of the first rotor blade, wherein the drive system is adapted to transform rotational energy of the rotor blade rotating about its longitudinal axis into another form of energy such that a counter torque against the rotating direction is induced.

Abstract: A seal arrangement for sealing a bearing comprising a first component and a second component which are rotatably movable with respect to each other is provided. The seal arrangement includes brush seal having an annular brush body carried by the first component and a bundle of resiliently bendable bristles. The brush seal is adapted to maintain a sealing condition when the first and second component are moved relative to each other in a non-rotational manner. Further, a brush seal and a wind turbine having a brush seal are provided.

Abstract: A wind turbine generator includes at least one blade and a hub assembly. The hub assembly includes at least one substantially cylindrical wall defining a substantially annular hub cavity. The assembly also includes at least one substantially triangular frame inserted into the hub cavity and is fixedly coupled to the cylindrical wall. The assembly further includes at least one blade attachment apparatus having at least one blade support sleeve fixedly coupled to at least a portion of the cylindrical wall. The sleeve is configured to receive at least a portion of the wind turbine blade. The blade attachment apparatus also includes at least one blade pitch bearing having a blade portion and a hub portion. The hub portion is slidingly engaged with the blade portion blade portion and the blade portion is positioned radially outboard of the hub portion.

Abstract: A method and apparatus of assembling a rotary machine includes providing at least one component. The component is at least one of a rotating member and a stationary member. The method and apparatus also includes coupling the component to a monocoque nacelle structure. The monocoque nacelle structure includes an outer shell that extends over at least a portion of the component.

Abstract: A wind power plant is provided having a rotor which is rotatably supported with respect to a rotor axis by a bearing arrangement. A rotor blade is fixed to a rotor hub and extends therefrom radially outwardly, with respect to the rotor axis. The bearing arrangement includes a first bearing ring fixed to a support arrangement in a torque-proof manner and disposed coaxially with respect to the rotor axis, and a second bearing ring being rotatably, with respect to the rotor axis, supported on the first bearing ring and fixed to the rotor hub.

Abstract: The present patent application concerns wind turbine having a rotor with a first rotor blade and a pitch control system with a first drive system for adjusting a pitch angle of the first rotor blade, wherein the drive system is adapted to transform rotational energy of the rotor blade rotating about its longitudinal axis into another form of energy such that a counter torque against the rotating direction is induced.

Abstract: A pitch drive system for a wind turbine is provided which comprises a regulation drive for regulating the pitch of a rotor blade of the wind turbine during normal operation, the regulation drive comprising at least one drive train, and an emergency drive for pitching the rotor blade in case of emergency, the emergency drive comprising at least one drive train, wherein the at least one drive train of the emergency drive is separate from the at least one drive train of the regulation drive.

Abstract: A method and apparatus of assembling a rotary machine includes providing at least one component. The component is at least one of a rotating member and a stationary member. The method and apparatus also includes coupling the component to a monocoque nacelle structure. The monocoque nacelle structure includes an outer shell that extends over at least a portion of the component.

Abstract: A wind turbine generator includes at least one blade and a hub assembly. The hub assembly includes at least one substantially cylindrical wall defining a substantially annular hub cavity. The assembly also includes at least one substantially triangular frame inserted into the hub cavity and is fixedly coupled to the cylindrical wall. The assembly further includes at least one blade attachment apparatus having at least one blade support sleeve fixedly coupled to at least a portion of the cylindrical wall. The sleeve is configured to receive at least a portion of the wind turbine blade. The blade attachment apparatus also includes at least one blade pitch bearing having a blade portion and a hub portion. The hub portion is slidingly engaged with the blade portion blade portion and the blade portion is positioned radially outboard of the hub portion.

Abstract: A wind turbine generator includes at least one rotating member and a semi-monocoque nacelle structure that includes at least one stationary member extending over at least a portion of the rotating member. A method of operating the wind turbine generator includes transmitting loads to the semi-monocoque nacelle structure.

Abstract: A mechanical emergency brake for a wind turbine is provided, said mechanical emergency brake comprising a spiral spring with a loop at its outer end, a cassette for accommodating said spring and a casing for receiving said cassette and said spring, wherein said casing comprises a retention pin to which the loop of the spring can be fixed.

Abstract: An improvement of a wind power plant having a rotor which is rotatably supported with respect to a rotor axis by means of a bearing arrangement and has a rotor blade fixed to a rotor hub and extending therefrom radially outwardly, with respect to the rotor axis, is provided, wherein said bearing arrangement comprises a first bearing ring being fixed to a support arrangement in a torque-proof manner and disposed coaxially with respect to said rotor axis, and a second bearing ring being rotatably, with respect to said rotor axis, supported on said first bearing ring and fixed to said rotor hub.

Abstract: A pitch drive system for a wind turbine is provided which comprises a regulation drive for regulating the pitch of a rotor blade of the wind turbine during normal operation, the regulation drive comprising at least one drive train, and an emergency drive for pitching the rotor blade in case of emergency, the emergency drive comprising at least one drive train, wherein the at least one drive train of the emergency drive is separate from the at least one drive train of the regulation drive.