Stators incorporating blank winding slots for a permanent magnet

Details Stators incorporating blank winding slots for a permanent magnet Stators incorporating blank winding slots for a permanent magnet

1995-01-05

1998-03-03

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Rotary

310180, 310184, 310202, H02K 300

Patent

active

057239304

ABSTRACT:
A winding method to accomplish a stator coil of a motor by use of the blank slot technique. The number of stator slot of the motor is not an integer multiple of the number of poles, thus the number of stator slots, to which each individual pole corresponds, is a fraction. Either to install stator coils in stator slots such that the winding locations are the same as those of using fraction slot winding method, but in this case, some of the stator slots filled with long pole-pitch coils to perform double-layer winding will be left empty and will not be embedded with in the stator coil, or let the two neighboring sides slots of the stator, which requires to stride over a ling pole-pitch to perform double-layer winding, leave half of the slot empty an embed only half of the slot with stator coil, therefore it ends up with a simple winding mode and attains the object of eliminating cogging phenomena of a motor. Both of these winding can result in phase balance.

REFERENCES:
patent: 3794870 (1974-02-01), Broadway et al.
patent: 4492890 (1985-01-01), MacDonald
patent: 4619040 (1986-10-01), Wang et al.
patent: 4672251 (1987-06-01), Broadway
patent: 4918347 (1990-04-01), Takaba
patent: 5336956 (1994-08-01), Haner

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