Reducing stress in electric-machine rotors by optimizing holes
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United States of America Patent
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Jan 26, 2016
Grant Date -
Nov 24, 2011
app pub date -
May 11, 2011
filing date -
May 20, 2010
priority date (Note) -
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Abstract
A rotating electrical machine has a rotor composed of laminations having salient poles. The poles have one or more holes which are positioned so as to reduce the peak stress experienced by the laminations when the rotor is rotating. The holes are chosen according to a disclosed design procedure which gives a reduction in peak stress for a given limit on the output of the machine.
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