Switched reluctance motor

Details Switched reluctance motor Switched reluctance motor

1997-06-11

1999-06-29

Ramirez, Nestor

Electrical generator or motor structure

Dynamoelectric

Rotary

310 51, 310168, 310264, H02K 1910, H02K 122

Patent

active

059172630

ABSTRACT:
In a switched reluctance motor, the projected poles of a rotor have feeble-magnetic portions each having a shape that extends radially inward approximately in the rotational direction from a position relative close to a radially outer end of the projected pole and to an end of the projected pole facing in a counter-rotational direction, that is, a direction opposite to the rotational direction, or a shape that has a side extending radially inward approximately in the rotational direction from a position relatively close to a radially outer end and an counter-rotational direction-facing end of the projected pole and that extends radially inward approximately in the counter-rotational direction. The feeble-magnetic portions are weaker in magnetism than the material of the rotor and reduce the magnetic attraction force occurring at the time of switching of coil energization, thereby reducing noises while ensuring generation of a desired amount of torque.

REFERENCES:
patent: 5418415 (1995-05-01), Ishizaki

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