VERFAHREN UND VORRICHTUNG ZUM AUSWERTEN DES ZUSTANDES EINES MAGNETISCHEN KREISES EINER ELEKTRISCHEN MASCHINE

摘要

The method consists in positioning a probe (8) in front of a pair of teeth provided on the face of the magnetic circuit of an electric machine. The probe has spaced apart magnetic prong portions (16, 18) having respective end faces adapted to match the teeth of the pair with the end faces (17) in registry with the teeth. The prong portions are respectively provided with an excitation winding (20) and a measurement winding (22). The excitation winding is excited to induce a magnetic flux in a test zone formed of the teeth in front of the probe and a portion of the magnetic circuit exending therebetween. The current flowing in the excitation winding and the voltage across the measurement winding are measured for calculating a resulting power which is indicative of the condition of the test zone. The apparatus is formed of the probe and electronics carrying out the above functions.