Slotless motor

Details Slotless motor Slotless motor

1992-10-19

1994-05-17

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Rotary

310179, H02K 112

Patent

active

053131312

ABSTRACT:
A slotless motor has a sufficiently small gap between a stator and a rotor, and improves characteristics of the torque and the power factor. Accordingly, the slotless motor comprises stator cores having no slots, coils forming revolving magnetic fields in the stator cores, and rotors having a permanent magnet. The coils are disposed along the stator cores cylindrically and constructed in one layer. Each of the coils forms a part which decreases the distribution of the number of turns in the direction of a diameter of the stator cores, and adjoining coils pile on each other at the part in the direction of the diameter of the stator cores. The distribution changes in response to a predetermined range.

REFERENCES:
patent: 4607803 (1986-08-01), Nozawa
patent: 4644209 (1987-02-01), Nozawa
patent: 4703211 (1987-10-01), Yazaki et al.
patent: 4954739 (1990-09-01), Schultz et al.

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