Brushless DC motor capable of preventing leakage of magnetic flu

Details Brushless DC motor capable of preventing leakage of magnetic flu Brushless DC motor capable of preventing leakage of magnetic flu

1998-11-10

2000-02-29

Ramirez, Nestor

Electrical generator or motor structure

Dynamoelectric

Rotary

310152, 310192, 310216, 310163, H02K 2112

Patent

active

060313110

ABSTRACT:
A brushless DC motor has a stator and a rotor. The stator has a stator core and excitation coils wound around the stator core. The rotor has a rotor core disposed at the inner space of the stator, and many permanent magnets inserted into the rotor core. The permanent magnets are symmetrically tilted with respect to a radial direction of the rotor core. The rotor core is formed with slots for cutting off a magnetic field between the permanent magnets adjacent to each other. The slots are parallel with an axis of the rotor core. The slots are formed between ends of the permanent magnets adjacent to each other at an outer part of the rotor core. The vortex of magnetic flux between the permanent magnets is prevented by the slots.

REFERENCES:
patent: 4403161 (1983-09-01), Miyashita et al.
patent: 4476408 (1984-10-01), Honsinger
patent: 5684352 (1997-11-01), Mita et al.

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