Motor with built-in permanent magnets

Details Motor with built-in permanent magnets Motor with built-in permanent magnets

1997-09-12

1999-08-31

LaBalle, Clayton

Electrical generator or motor structure

Dynamoelectric

Rotary

H02K 2114

Patent

active

059457600

ABSTRACT:
A rotor of a motor includes a plurality of sets of permanent magnets 8a, 8b embedded in the rotor. Each includes a permanent magnet at an inner side and another permanent magnet at an outer side with a distance between them. Each permanent magnet 8a, 8b is formed like an arch projecting towards the center of the rotor. Magnetic flux flows easily through an interval between the permanent magnets at inner and outer sides, and the inductance in a q-axis is enlarged. Then, the reluctance torque is generated in addition to the magnet torque, and the motor has a high torque and a high output power.

REFERENCES:
patent: 2939025 (1960-05-01), Williford, Jr.
patent: 4358697 (1982-11-01), Liu et al.
patent: 4663551 (1987-05-01), Weh et al.
patent: 4924130 (1990-05-01), Fratta
patent: 4939398 (1990-07-01), Lloyd
patent: 5510662 (1996-04-01), Tanimoto et al.
patent: 5679995 (1997-10-01), Nagate et al.

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