Patent ID: 7190086
Filing Date: 2007-03-13
Classification: F03D,F05B,H02K,Y02E

Abstract:
1. A method of controlling an asynchronous machine of a wind power installation, wherein the wind power installation comprises: a shaft: an installation rotor and a generator as well as a machine casing that accommodates the generator; and an azimuth drive for azimuth adjustment of the machine casing, the azimuth drive being formed in said asynchronous machine; said asynchronous machine having a first rotor/stator arrangement, a rotor thereof being directly connected to the shaft, and said asynchronous machine further having at least one second rotor/stator arrangement that is electrically separated from the first rotor/stator arrangement, a rotor of said at least one second rotor/stator arrangement also being connected directly to the shaft, the drive permitting nullification of play of mechanical components in a target position, wherein both the first and the at least one second rotor/stator arrangements are supplied with respective alternating currents that are in-phase with each other.