.DELTA.-Connected, two-layer, three-phase winding for an electrical machine
AssigneeBBC Brown, Boveri & Company, Limited
InventorTihomir Bratoljic
Life of this patent
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Abstract
A winding for a .DELTA.-connected, two-layer, three phase electrical machine with at least two shunt connected sets of coils per phase wherein the winding is arranged such that two adjacent sets of coils are connected with the coils of one set being cross connected and the other set being uncrossed. The coil end overhangs of the crossed set are longer than the overhangs of the uncrossed set. The voltage difference between adjacent conductor rods of one layer thus amounts, at all phase changes, at most to one winding voltage.
Claims7
A delta connected, two-layer, three-phase multiple winding for electrical machines, especially superconducting machines, with at least two sets of coils per phase connected in shunt, the winding being arranged on the machines such that the coils of one set are crossconnected and the coils of the other set are uncrossed, and the coil end overhangs of the crossed set are longer than the overhangs of the uncrossed set, wherein the voltage difference between conductor rods disposed in the same radial layer of any two adjacent stator slots is at most equal to one winding voltage during operation of the machine.
Dependencies are inferred from the claim text.