Dynamoelectric machine with reduced vibration
First Claim
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1. A method to reduce vibration and noise during operation of a dynamoelectric machine comprising the steps of:
- (a) determine the overall receptance for the electromagnetic structure in said machine at natural frequencies to the magnetic force being applied at said natural frequencies during machine operation, (b) modify the mechanical features of said electromagnetic structure to reduce the overall receptance of said modified electromagnetic structure to said applied magnetic force, (c) further modify adjacent stator laminations in said electromagnetic structure to provide slip damping therebetween due to having dissimilar receptance.
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Abstract
A method and structural means are provided to mechanically modify the electromagnetic structure of a dynamoelectric machine for suppression of the vibration and noise otherwise occurring during machine operation. In doing so, the electrical performance of said modified dynamoelectric machine need not be significantly degraded.
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Citations
62 Claims
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1. A method to reduce vibration and noise during operation of a dynamoelectric machine comprising the steps of:
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(a) determine the overall receptance for the electromagnetic structure in said machine at natural frequencies to the magnetic force being applied at said natural frequencies during machine operation, (b) modify the mechanical features of said electromagnetic structure to reduce the overall receptance of said modified electromagnetic structure to said applied magnetic force, (c) further modify adjacent stator laminations in said electromagnetic structure to provide slip damping therebetween due to having dissimilar receptance. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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- 30. Vibration noise suppression means for dynamoelectric machine operation which comprises a mechanically modified electromagnetic structure reducing the overall receptance of said modified electromagnetic structure to the applied magnetic force in operative association with adjacent laminations in said electromagnetic structure having slip damping therebetween.
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46. A dynamoelectric machine exhibiting reduced vibratory noise which includes a rotor and stator component having relative motion therebetween during operations said stator component including an electromagnetic structure which is mechanically modified to reduce the overall receptance to the magnetic force being applied during machine operation while further being modified with slip damping means being disposed between adjacent laminations.
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47. A dynamoelectric machine exhibiting reduced vibratory noise which comprises:
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(a) a stator mounted in a stationary housing having a bore therethrough which includes a mechanically modified electromagnetic structure having a laminated ferromagnetic core ring containing a plurality of poles disposed therein upon teeth elements spaced apart in slot openings, said electromagnetic structure having been mechanically modified to reduce the overall receptance of said modified electromagnetic structure to the magnetic force being applied during machine operation while further being modified with slip damping means being disposed between adjacent stator laminations, and (b) a rotor being movably mounted with respect to said stator. - View Dependent Claims (48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62)
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Specification