Abstract: A stator segment of a stator of a generator for a wind turbine has at least one stator laminated core which has at least two stator lamination stacks, wherein adjacent stator lamination stacks of the at least two stator lamination stacks are in each case spaced parallel to one another in an axial direction and forming in each case one stator cooling duct with a stator cooling duct width through which a cooling medium can be guided, in particular in a radial direction. A rotor segment of a rotor for a wind turbine has two or a plurality of magnet units are disposed spaced apart from one another in an axial direction, wherein the magnet units disposed adjacently in the axial direction define a circumferential gap with a gap width for feeding and distributing a cooling medium.

Abstract: A stator laminated core for receiving at least one coil unit of a stator segment of a stator of a generator, in particular a segmented stator of a segmented generator, for a wind turbine, comprises at least one stator lamination stack with two or more lamination stack units which are disposed spaced apart from one another in a circumferential direction and have a plurality of first stator lamination elements which are disposed next to one another, in particular stacked, in an axial direction; wherein the at least one stator lamination stack comprises at least one second stator lamination element, preferably two second stator lamination elements, which is different from the first stator lamination element and in each case connects adjacent lamination stack units of the two or more lamination stack units to one another.

Abstract: Provided is a method for heating a generator of a wind power installation during or before starting the installation. The generator is a permanent magnet synchronous generator configured to generate a stator current comprising at least one three-phase current. The installation is configured as a gearless installation and is connected to an electrical supply network for feeding electrical power into the network. The installation comprises a converter, connected to the generator, to control the generator to feed electrical power into the network. The method comprises rotating the rotor with a low rotational speed below a first limit and operating the converter such that the generator generates the stator current and electrical power, and no electrical power is fed into the electrical supply network. At least one portion of the stator current substantially circulates through the generator and the converter to consume power in generator windings to heat the generator.

Abstract: A method for locking the rotor of a wind turbine includes providing the rotor with at least one rotor blade which can be displaced about its longitudinal axis by an adjusting device from an operating position into a vane position, in which substantially no torque acts upon the rotor. The rotor drives a generator and can be prevented from rotation in a locking position by inserting a locking bolt into a rotor-side receiving opening. A wind turbine for performing the method includes a rotor which is induced into a creeping rotational movement at such a low rotational speed by short-circuiting at least one stator winding of the generator that a locking bolt can be inserted into a rotor-side receiving opening while the rotor is rotating.

Abstract: A method for locking the rotor of a wind turbine includes providing the rotor with at least one rotor blade which can be displaced about its longitudinal axis by an adjusting device from an operating position into a vane position, in which substantially no torque acts upon the rotor. The rotor drives a generator and can be prevented from rotation in a locking position by inserting a locking bolt into a rotor-side receiving opening. A wind turbine for performing the method includes a rotor which is induced into a creeping rotational movement at such a low rotational speed by short-circuiting at least one stator winding of the generator that a locking bolt can be inserted into a rotor-side receiving opening while the rotor is rotating.