| 摘要 |
The electric power generator comprises a shaft (10) rotatably supported with bearings (14, 15) at a frame construction (60), a rotor (20) rotating with the shaft (10), a stator (30) comprising a stator winding having ends (31 A) protruding axially (X-X) outwards from the axial (X-X) ends of the stator (30), the stator (30) surrounding the rotor (20) and being attached to the frame construction (60). A first end compartment (71) is formed between first axial (X-X) ends of the stator (30) and the rotor (20) and a first end portion (61) of the frame construction (60). A second end compartment (72) is formed between second axial (X-X) ends of the stator (30) and the rotor (20) and a second end portion (62) of the frame construction (60). A flywheel unit (100) is attached to the shaft (10) in at least one of the first end compartment (71) and the second end compartment (72). The flywheel unit (100) comprises a fan (110) for passing cooling air (L1) through the electric power generator (200), and an air guide (120) extending radially outwards from the fan (110) for guiding the cooling air (F1) to pass across the ends (31A) of the stator winding, said air guide (120) forming either also an inertia mass (130) or an inertia mass (130) being provided in the flywheel unit (100) in addition to the air guide (120), which inertia mass (130) extends radially outwards from the air guide (120). |
