DECOUPLING OF A HIGH-FREQUENCY ERROR SIGNAL FROM A HIGH-FREQUENCY ELECTROMAGNETIC FIELD IN A LARGE ELECTRIC MACHINE

摘要

A high-frequency error signal is decoupled from a high-frequency electromagnetic field in a large electric machine having a stand (5) which carries an electric winding (1, 2) and is equipped with at least one temperature sensor (3, 4). The high-frequency error signal is to be taken from the temperature sensor (3, 4) used as an antenna. The quantity of equipment required to decouple the error signal is thus kept low. By using a plurality of temperature sensors (3, 4) it is possible to locate the damage (15) at the origin of the error signal. The invention allows damages in a large electric machine to be recognized and located with particularly simple means.