Method for determining a temperature in a coil of conductors of an electric machine

摘要

The method involves pre-determining the location between one of the sub-conductors (2) and an assigned sub-conductor insulation (3). An optical fiber (5) is arranged with a sensor material piece (9) in the winding, where the sensor material piece is attached to the predetermined location. The optical properties of the sensor material piece are temperature-independent and non-elongation affected. The sensor material piece is exposed via optical fiber, so that the light is emitted from the sensor material piece after an interaction with the sensor material piece.