Permanent magnet motor and washing machine provided therewith

Details Permanent magnet motor and washing machine provided therewith Permanent magnet motor and washing machine provided therewith

2011-04-12

2011-04-12

Le, Dang D (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

Reexamination Certificate

active

07923879

ABSTRACT:
A permanent magnet motor includes a rotor and a plurality of permanent magnets located inside a rotor core. One or more of the permanent magnets having relatively smaller coercive forces have a first magnetic characteristic that when a magnetizing magnetic field is caused to act on the permanent magnets, a magnetic susceptibility is substantially at 0 until reaching an inflection point during magnetization, and when exceeding the inflection point, the magnetic susceptibility enters a loop approximating to the hysteresis loop in a first quadrant, and a second magnetic characteristic that when a demagnetizing magnetic field is caused to act on the permanent magnets, a magnetic susceptibility is substantially at 0 until reaching the inflection point during demagnetization, and when exceeding the inflection point, the magnetic susceptibility enters a loop approximating to the hysteresis loop in a second quadrant.

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Chinese Office Action dated Aug. 20, 2010.
Korean Office Action dated Nov. 29, 2010.

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