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Why the application of salient-pole rotors for high speed machines is usuitable?
Gmmuso
basically salient pole construction is adapted due to its simplicity in construction.
there are various types of arrangements such as bolted poles, dovetailed, double dovetailed, dovetailed and bolted etc.... but the application is limited due to two main factors:
1. the stresses developed in the fasteners (dovetails, bolts, fixing slots etc) due to high centrifugal forces.
2. high windage noises at high speeds due to large spaces between the poles.
the stresses can be countered upto a certain extent by using certain high tensile forged alloy steel such as 4140, 4340, ASTM grades etc.
but the noise factors require unique design of the poles to avoid windage and electromagnetic noises.
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∙ 13y ago
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