Dynamoelectric machine with ferromagnetic end winding ring

Details Dynamoelectric machine with ferromagnetic end winding ring Dynamoelectric machine with ferromagnetic end winding ring

1998-02-10

2000-12-05

LaBalle, Clayton

Electrical generator or motor structure

Dynamoelectric

Rotary

310216, 310261, 310256, 310260, 310270, H02K 112, H02K 106, H02K 300, H02K 338, H02K 342

Patent

active

061571091

ABSTRACT:
A dynamoelectric machine such as a motor or generator has an end winding ring of ferromagnetic material in an area of the end winding portions of the stator and/or rotor winding. The end winding ring improves the overall power density of the motor by reducing the stator and/or rotor flux leakage (the magnetic flux that is produced by the windings that is not utilized to produce torque in the rotor). By operatively coupling end winding portions of the stator winding with ferromagnetic material, the end winding portion is employed to produce torque in the rotor. The end winding ring may be a ring of ferromagnetic material attached to the stator core or the frame or the rotor, or may be a coating of ferromagnetic material applied indirectly to the end winding portions. The end winding ring also may support the end winding portions to reduce movement thereof.

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