Rotating electrical machines

摘要

A torsional vibration damper (200) is integrated into a rotating electrical machine. A rotatable assembly of the electrical machine includes a rotor core pack (104) having a first end and a second end. The integrated torsional vibration damper (200) consists of a torsional elastic coupling (202) and a torsional elastic damper (204) and provides mechanical damping. The integrated torsional vibration damper (200) is mounted to the rotatable shaft (106) of the electrical machine by a flange (112). The rotor core pack (104) is mounted at the first end to the integrated torsional vibration damper (200) by suitable structure members such as a mounting flange (116) and is not fixedly mounted directly to the rotatable shaft (106). In the case where the rotor core pack (104) is cooled by circulating coolant fluid (e.g. MIDEL) then the integrated torsional vibration damper (200) may be a viscous damper that uses the coolant fluid as a viscous working fluid.