Patent ID: 6333581
Filing Date: 2001-12-25
Classification: H02K

Abstract:
An electrical machine, in particular a three-phase generator, having a stator (21) secured in a housing, having a claw pole rotor (23) that has an exciter winding (28) and is secured to a shaft (13), and having a repeater (29), laterally adjoining the claw pole rotor (23), with primary and secondary windings (30; 31) that each disposed on a respective core (36, 41, 47; 35, 42, 48) of soft magnetic material and are magnetically coupled to one another via an air gap (38), and the repeater (29) transmits an exciter power to the exciter winding (28), and the repeater (29) is disposed between the claw pole rotor (23) and a bearing plate (17) that closes off the housing (10) of the three-phase generator, the primary winding (30) is disposed together with the associated stationary core (36,41, 47) on the bearing plate, and the stationary core (36) that receives the primary winding (30) is located radially outward, while the radially inner core (35) that receives the secondary winding (31) is disposed to rotate with the shaft (13), the outer core (36, 48) is received in a retaining ring (39, 46) the outer core (48) rotates with the claw pole rotor (23), and the retaining ring (46) is secured to the claw pole rotor (23), preferably on the face end thereof.