Abstract: Provided is a stator for an electrical machine, in particular a generator of a wind turbine, wherein the cylindrical stator includes multiple similar stator segments, each stator segment constituting a fraction of the circumference of the stator and having at least one coil element and one pre-installed bus bar segment per phase provided to or by the electrical machine, wherein each bus bar segment is electrically connected to a coil element of the respective phase, wherein at least two circumferentially adjacent stator segments form a section and multiple subsets of an even number of radially opposing sections are respectively assigned to a connector at a respective connection position along the circumference of the stator, wherein in each section, segmented bus bars for each phase are provided by connecting bus bar segments of adjacent stator segments.

Abstract: A bearing of a wind turbine, wherein the bearing is lubricated with a lubricant for reducing wear and fatigue of the bearing, the bearing is sealed such that the amount of lubricant which is leaking out of the bearing is minimized, is provided. The bearing includes a ventilation device with at least one pressure compensation hole for enabling a pressure compensation between the sealed bearing and the ambient. The ventilation device further includes a compressor unit, which is connected with the pressure compensation hole. Thus, a compressed medium can be selectively blown through the pressure compensation hole to ensure that the pressure compensation hole remains substantially unobstructed such that overpressure within the bearing compared to the ambient is minimized and leakage of lubricant out of the bearing is reduced. A wind turbine including such bearing and an associated method is also provided.

Abstract: Disclosed is a direct drive wind turbine including a plurality of blades connected to a hub, a generator including a stator and a rotor, the stator being fixed on a nacelle of the wind turbine and a rotation sensor having a static element and a moving element. The hub is directly connected to the rotor of the generator. The static element of the rotation sensor is mounted on a stationary element of the wind turbine, in particular the stator, at a distance from the rotation axis of the hub, and the moving element of the rotation sensor is mounted on the rotor of the generator at a distance from the rotation axis of the hub.

Abstract: A wind turbine with a generator is provided. The wind turbine includes a rotor comprising permanent magnets; a stator comprising stator coils mounted in or on a stator housing structure; a generator contactor electrically connected to the stator and to a converter, the generator contactor disposed in or on the stator housing structure.

Abstract: An arrangement is described for receiving an electrical converter module for converting a first frequency of an electrical input signal into a second frequency of an electrical output signal. A rack includes input terminals for receiving the electrical input signal and output terminals for providing the electrical output signal. A slot receives the converter module in a first and second positions where in first position the converter module is electrically connected both to the input and output terminals and in the second position the converter module is electrically disconnected both from the input and output terminals. An actuator, which is mounted to the rack and which, in response to a disconnect trigger signal, is adapted to move the electrical converter module from the first position to the second position. A frequency converter system equipped with such an arrangement and a method for disconnecting a converter module are provided.

Abstract: Disclosed is a direct drive wind turbine including a plurality of blades connected to a hub, a generator including a stator and a rotor, the stator being fixed on a nacelle of the wind turbine and a rotation sensor having a static element and a moving element. The hub is directly connected to the rotor of the generator. The static element of the rotation sensor is mounted on a stationary element of the wind turbine, in particular the stator, at a distance from the rotation axis of the hub, and the moving element of the rotation sensor is mounted on the rotor of the generator at a distance from the rotation axis of the hub.

Abstract: An electric generator for a wind turbine, a wind turbine including such an electric generator and a method of driving such a wind turbine are provided. The electric generator includes a generator rotor and a generator stator concentrically arranged around a generator axis and at a distance from each other. The electric generator further includes a distance sensor arrangement including at least one distance sensor adapted to sense the distance between the generator rotor and the generator stator and to provide a sensor signal including an information about the sensed distance.

Abstract: An arrangement is described for receiving an electrical converter module for converting a first frequency of an electrical input signal into a second frequency of an electrical output signal. A rack includes input terminals for receiving the electrical input signal and output terminals for providing the electrical output signal. A slot receives the converter module in a first and second positions where in first position the converter module is electrically connected both to the input and output terminals and in the second position the converter module is electrically disconnected both from the input and output terminals. An actuator, which is mounted to the rack and which, in response to a disconnect trigger signal, is adapted to move the electrical converter module from the first position to the second position.

Abstract: A wind turbine with a generator is provided. The wind turbine includes a rotor comprising permanent magnets; a stator comprising stator coils mounted in or on a stator housing structure; a generator contactor electrically connected to the stator and to a converter, the generator contactor disposed in or on the stator housing structure.

Abstract: An arrangement is described for receiving an electrical converter module for converting a first frequency of an electrical input signal into a second frequency of an electrical output signal. A rack includes input terminals for receiving the electrical input signal and output terminals for providing the electrical output signal. A slot receives the converter module in a first and second positions where in first position the converter module is electrically connected both to the input and output terminals and in the second position the converter module is electrically disconnected both from the input and output terminals. An actuator, which is mounted to the rack and which, in response to a disconnect trigger signal, is adapted to move the electrical converter module from the first position to the second position. A frequency converter system equipped with such an arrangement and a method for disconnecting a converter module are provided.

Abstract: An arrangement is described for receiving an electrical converter module for converting a first frequency of an electrical input signal into a second frequency of an electrical output signal. A rack includes input terminals for receiving the electrical input signal and output terminals for providing the electrical output signal. A slot receives the converter module in a first and second positions where in first position the converter module is electrically connected both to the input and output terminals and in the second position the converter module is electrically disconnected both from the input and output terminals. An actuator, which is mounted to the rack and which, in response to a disconnect trigger signal, is adapted to move the electrical converter module from the first position to the second position.