Electrical machine with a stator lamination of grain-...

Details Electrical machine with a stator lamination of grain-... Electrical machine with a stator lamination of grain-...

H - Electricity

02

K

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H02K 1/12 (2006.01) H02K 1/02 (2006.01) H02K 17/42 (2006.01) H02K 19/22 (2006.01)

Patent

CA 1165370

Abstract of the Disclosure The laminations of a laminated stator of a slowly running electrical machine having a high number of poles are composed of grain-oriented sheets, each of which has a preferential magnetic direction that extends substantially longitudinally along the teeth of that sheet. This permits the excitation current to be reduced, and, as a result, the air gap of the machine is enlarged so that, on the whole, approximately the same excitation is required as for a laminated stator in which the laminations consist of normal, non-oriented sheets. As a result, the mechanical stability of the machine is increased. The invention is especially useful in asynchronous bulb turbine sets.

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