Reluctance motor

Details Reluctance motor Reluctance motor

1999-07-19

2000-09-19

Ramirez, Nestor

Electrical generator or motor structure

Dynamoelectric

Rotary

310152, 310156, 310162, 310166, 310261, 310269, H02K 1742

Patent

active

061217069

ABSTRACT:
A reluctance motor is provided that reduces leaking magnetic flux. To generate magnetic flux between adjacent magnetic poles in a rotor 2, permanent magnets 4 are disposed in approximate centers of split magnetic paths near a borderline area between two magnetic poles in an internal portion of the rotor. Further, each of slots 8 in a stator 1 is wound with a coil of a corresponding phase such that the vector phase and amplitude expressed by the products of the number of coil turns and the amount of passing current, namely, ampere-turns, become almost identical for each of the slots. By reducing leaking magnetic flux according to this arrangement, generated torque can be increased. As the rotor mechanical strength is enhanced, the rotor can be safely driven at a higher speed. A practical motor is obtained that simultaneously achieves improved motor characteristics and reduced torque ripples.

REFERENCES:
patent: 4139790 (1979-02-01), Steen
patent: 5296773 (1994-03-01), El-Antably et al.
patent: 5304882 (1994-04-01), Lipo et al.
patent: 5378953 (1995-01-01), Uchida et al.
patent: 5510662 (1996-04-01), Tanimoto et al.
patent: 5903079 (1999-05-01), Iwata et al.

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