Switched reluctance motor

Details Switched reluctance motor Switched reluctance motor

2011-05-24

2011-05-24

Mullins, Burton (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S168000, C310S216092

Reexamination Certificate

active

07948145

ABSTRACT:
A plurality of concavities and convexities is provided on tips of all rotor teeth24of the SR motor5. Depths of the concave portions α are deep on an edge side where a stator tooth23and rotor tooth24first approach and are shallow as a facing area between the stator tooth23and rotor tooth24increases. Therefore, magnetic resistance between the stator tooth23and rotor tooth24becomes high at an early stage of the stator tooth23and rotor tooth24facing each other and becomes low as the facing area between the stator tooth23and rotor tooth24increases. As a result, torque fluctuation can be suppressed at a time of a large current and a minimum generation torque can be increased at a time of a small current.

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Japanese Office Action mailed Aug. 4, 2009 issued in corresponding Japanese Appln. No. 2007-337457, with English translation.

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