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Title: Reduced vibration motor winding arrangement

An individual phase winding arrangement having a sixty electrical degree phase belt width for use with a three phase motor armature includes a delta connected phase winding portion and a wye connected phase winding portion. Both the delta and wye connected phase winding portions have a thirty electrical degree phase belt width. The delta and wye connected phase winding portions are each formed from a preselected number of individual coils each formed, in turn, from an unequal number of electrical conductor turns in the approximate ratio of .sqroot.3. The individual coils of the delta and wye connected phase winding portions may either be connected in series or parallel. This arrangement provides an armature winding for a three phase motor which retains the benefits of the widely known and utilized thirty degree phase belt concept, including improved mmf waveform and fundamental distribution factor, with consequent reduced vibrations and improved efficiency.
 [1];  [2];  [3]
  1. (Rexford, NY)
  2. (Scotia, NY)
  3. (Lathem, NY)
Issue Date:
OSTI Identifier:
United States of America as represented by Department of Energy (Washington, DC) KAPL
Patent Number(s):
US 5686774
Contract Number:
Research Org:
Knolls Atomic Power Laboratory (KAPL), Niskayuna, NY
Country of Publication:
United States
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