Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1990-12-24
1993-02-16
Skudy, R.
Electrical generator or motor structure
Dynamoelectric
Rotary
310106, 310DIG2, 318701, H02K 2112
Patent
active
051874016
ABSTRACT:
An improved electric motor has a stator, and a hysteresis cylindrical ring formed of magnetic metallic material disposed within the stator cylindrical core with an annular air space between the hysteresis cylindrical ring and the stator core, and a rotor cylindrical sleeve formed of non-magnetic material relatively rotatably mounted within the hysteresis cylindrical ring on a suitable shaft. The improvement includes several interrelated elements. Firstly, the hysteresis cylindrical ring has four longitudinal, generally-rectangular slots spaced 90.degree. apart, and extending from an inner surface of the hysteresis cylindrical ring. Secondly, a permanent magnet is provided only in each of the slots. Thirdly, the rotor cylindrical sleeve has 4 longitudinally-extending, non-magnetically-retentive projections thereon, the projections being spaced 90.degree. apart. The rotor cylindrical sleeve thereby provides longitudinally-extending, annular air duct in each of the 4 sections. This provides an improved 4-pole combination hysteresis-reluctance-permanent-magnet electric motor.
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Skudy R.
Westerhoff Richard V.
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