Electric generator arrangement and method for reducing a rotor eccentricity

摘要

An electric generator arrangement with a stator being equipped with at least two opposed phase windings, each winding comprising at least two sub-windings in series is provided. The arrangement also comprises a controlled varistor across the connections of the sub-windings of said opposed phase windings. A current imbalance between two opposed phase windings is measured and the varistor is controlled in such a way that the resistance of the varistor is increased when the current imbalance increases.

主权项

1. An electric generator arrangement, comprising:
a generator having a stator and a rotor mounted to said stator free to rotate, wherein the stator is equipped with at least two opposed phase windings/segments, each winding/segment comprising at least two sub-windings in series, a controlled varistor across the connections of the sub-windings of said at least two opposed phase windings/segments, a sensor for measuring the current imbalance of two opposed phase windings/segments of said electric generator and an electronic circuit for controlling said varistor in such a way that the resistance of the varistor is increased when the current imbalance between said opposed phase windings/segments increases.