Patent ID: 11031888

Abstract:
The invention relates to a method for operating a rotating electric machine (1) having a rotor (3), a polyphase excitation winding (5) and a commutation apparatus (9) for commutating excitation winding currents of the excitation winding (5) depending on rotor position values (R) for rotor positions of the rotor (3). First measurement values (A) for the rotor positions are detected by means of a first sensor apparatus (13) and second measurement values (B) for the rotor positions are detected by means of a second sensor apparatus (15). For the commutation of the excitation winding currents, the rotor position values (R) are formed from weighted mean values (M) of the first measurement values (A) and the second measurement values (B). In a first rotation speed range of rotor rotation speeds of the rotor (3), the first sensor apparatus (13) has a higher resolution of the rotor positions than the second sensor apparatus (15) and, in the first rotation speed range, the first measurement values (A) are given more weight than the second measurement values (B) when forming the weighted mean values (M).