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US 2002/0163273 A1Published application
Electric rotating field machine with a two-layered winding in the stator slots
AssigneeSiemens Aktiengesellschaft
InventorGerhard Huth
Life of this patent
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Abstract
An electric three-phase induction machine with six poles and 15 stator slots and a two-layer winding scheme is described. The induction machine has a smaller overall size than conventional machines with a greater slot number, without degrading the efficiency and/or torque characteristic of the machine. The machine can be manufactured cost-effectively and is useful for applications with synchronous spindles in machine tools.
Claims6
An electric three-phase induction machine comprising:
- a housing;
- a stator assembly secured in the housing and having six poles and 15 stator slots, said stator assembly including a two-layered winding with an upper winding layer and a lower winding layer, and winding end turns located on end faces of the stator assembly, said end turns connecting strands of the upper winding layer with strands of the lower winding layer;
- and
- a rotor supported in the housing for rotation relative to the stator.
1 more element
Dependencies are inferred from the claim text.