Abstract: A wind turbine comprises a permanent magnet synchronous generator, a main converter, a main converter controller, a wind turbine master controller and an electrical power supply stage comprising an electrical energy storing device. A startup of the wind turbine can be performed using electrical energy from the electrical energy storing device independent from a power supplying grid and/or a combustion engine. After startup, the wind turbine can be operated in an island mode by controlling an intermediate voltage of the main converter by the main converter controller and retrieving power from the synchronous generator independent from the electrical energy storing device.

Abstract: A wind turbine comprises a permanent magnet synchronous generator, a main converter, a main converter controller, a wind turbine master controller and an electrical power supply stage comprising an electrical energy storing device. A startup of the wind turbine can be performed using electrical energy from the electrical energy storing device independent from a power supplying grid and/or a combustion engine. After startup, the wind turbine can be operated in an island mode by controlling an intermediate voltage of the main converter by the main converter controller and retrieving power from the synchronous generator independent from the electrical energy storing device.

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 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: A wind turbine includes a tower; a blade for rotating on the tower; a rotor shaft, connected to the blade, having an axial hole; a line, arranged in the hole, for carrying a signal; a support, wrapped around the line inside the hole, for spacing the line from the rotor shaft inside the hole; where the support expands radially to at least partially fill an annular space between the line and an inside wall of the axial hole.

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 wind turbine, includes a tower; a blade for rotating on the tower; a rotor shaft, connected to the blade, having an axial hole; a line, arranged in the hole, for carrying a signal; and a support for spacing the line from the rotor shaft inside the hole.

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 shaft for use in a wind energy system is provided, with the shaft comprising a hollow shaft body; a cable fixation being connected to the hollow shaft body and extending axially in the hollow shaft body, the cable fixation being adapted for fixing a cable bundle; and a tensioner being adapted for tensioning the cable fixation in an axial direction of the hollow shaft body. Further, a fixation device and a wind energy system are provided. Furthermore, a method for constructing a fixation device for use in a wind energy system is provided.

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 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 invention relates to a switch cabinet for a wind turbine with at least one circuit element accommodated in said switch cabinet and a drying arrangement for preventing water depositions onto the at least one circuit element, wherein the drying arrangement includes a device for generating an air flow in a region of the at least one circuit element, the device including a peltier element.

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.