| 摘要 |
The invention relates to an electric machine, comprising a stator element (1), a rotor element (2) arranged coaxial to the stator element (1), which rotor element has a rotor element weight, a shaft (3), which is connected to the rotor element (2) in a rotational fixed manner and is rotatably supported by means of a number n of bearings (4), wherein n is at least two and at least one of the at least two bearings (4) is a plain bearing, and at least one sensor (5), by means of which a vibration of the shaft (3) in a radial direction can be detected. The invention further relates to a system having such an electric machine and to a method for operating such an electric machine and/or such a system. In order to make the damping of a shaft (3) of an electric machine that vibrates radially during operation more economical and reliable, the electric machine according to the invention has at least one damping unit (6), by means of which at most a damping force having a magnitude that is less than the magnitude of the rotor weight divided by the number n can be applied to the shaft (3) in a radial direction, wherein the at least one damping unit (6) comprises a rotor (7), which is connected to the shaft (3) in a rotationally fixed manner and which has a laminated rotor core, and a stator (8), which has electrical stator windings (9), wherein the rotor laminated core and the stator windings (9) are arranged in such a way and electric current can be supplied to the stator windings (9) in such a way that the vibration of the shaft (3) detected by the at least one sensor (5) can be damped. |
