Multi-speed permanent magnet motor

Details Multi-speed permanent magnet motor Multi-speed permanent magnet motor

1980-01-14

1982-06-08

Duggan, Donovan F.

Electrical generator or motor structure

Dynamoelectric

Rotary

310126, 310163, H02K 1600

Patent

active

043341640

ABSTRACT:
Each of the motor stator poles has a window cut out which functions to create an unbalanced flux distribution and move the magnetic neutral off the centerline of the stator pole. A plurality of permanent magnet rotors are mounted on a common shaft to permit a desired rotor to be moved into the stator field. Each rotor has a different number of poles selected so with any rotor there will always be a whole odd number of poles within the span of a stator pole. Speed is determined by the number of poles in the rotor in operative position.

REFERENCES:
patent: 1946289 (1934-02-01), Lilienthal
patent: 2019683 (1935-11-01), Kohlhagen
patent: 3535571 (1970-10-01), Heinzen

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