The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 31, 2010
Filed:
May. 02, 2007
Maria Bade, Berlin, DE;
Axel Möhle, Berlin, DE;
Maria Bade, Berlin, DE;
Axel Möhle, Berlin, DE;
Siemens Aktiengesellschaft, München, DE;
Abstract
The electrical machine () has a stator () and a rotor (), wherein the stator () has stator slots (), in which a stator winding () with redundant and at least three-phase winding systems (U, V, W; U, V, W) is laid. According to the invention, the electrical machine () has a large number of poles with a pole number (PZ) of at least four, a number (NZ) of stator slots () which corresponds to the product of a phase number and the square of the pole number (PZ) of the electrical machine () or an integral multiple thereof, and a number of winding systems (U, V, W; . . . ; U, V, W) which corresponds to the pole number (PZ). In each case a number of in-phase winding sections (U-U, V-V, W-W) which corresponds to the pole number (PZ) are combined to form a group of phase winding sections (PU, PV, PW). The phase winding section groups (PU, PV, PW) are laid, phase-cyclically and pole-for-pole, in the stator slots () of the stator (). Depending on the pole and phase winding section group (PU, PV, PW), in each case are slot region (N-N) which corresponds to the pole number (PZ) is provided. The slot assignment takes place in such a way that the in-phase winding sections (U-U, V-V, W-W) are distributed, corresponding to their numbering, uniformly amongst the slot positions (N, . . . , N) of the associated slot regions (N-N).