Abstract: A method of determining the magnetization level of permanent magnets of an electric machine, whereby a probe winding is placed in an electric machine having a stator with a plurality of stator winding, and a rotor with a plurality of permanent magnets; the probe winding is fixed with respect to the stator and links a magnetic flux produced by the permanent magnets; the rotor is rotated at an angular speed; an induced electric quantity is determined at terminals of the probe winding in response to passage of the permanent magnets; and the magnetization level of the permanent magnets is determined on the basis of the induced electric quantity detected.

Abstract: An electric generator of a wind power turbine has a stator having a cylindrical shell; a number of segments arranged, along the inner face of the cylindrical shell, in a circumferential configuration; and a number of adjustable locking devices located between the segments to press the segments together circumferentially and lock the segments in a given position.

Abstract: A wind power turbine having a pylon; a nacelle; an electric generator fitted to the nacelle to produce electric energy; a frequency converter housed inside the pylon; and a cooling system for cooling the frequency converter, and which has an open-loop circuit provided with a conduit, and at least one cooling fin thermally connected to the frequency converter and housed in the conduit.