Vibration Prevention in Synchronous Machines

摘要

Spatially mutually close pole components are offset with respect to one another such that their influences on a given harmonic of the vibrations occurring during operation cancel one another as much as possible. The present invention therefore suggests concepts and makes dimensioning proposals by means of which certain harmonic orders of the operating noise can be reduced.

主权项

1. A pole assembly for a pole of an electric machine, wherein the pole assembly comprises:
a number of pole components, equal to at least 4, each having one face; a number of subassemblies to which at least the number of pole components reduced by 1 are assigned, wherein each of the subassemblies is assigned mutually adjacent pole components and has at least 2 such pole components, wherein mutually correspondingly oriented face boundaries of the pole components of each of the subassemblies are arranged such that, between mutually successive face boundaries of a given one of the subassemblies, one minimum offset exists with respect to a nearest face boundary of the given subassembly in a common direction, wherein the amount of the minimum offset is at least 1.5 times larger than a comparison value which is computed as the maximally occurring relative offset of two pole components within the pole assembly divided by the number of pole components reduced by 1, wherein further within the pole assembly, no further pole component with an offset equal to 0 exists with respect to more than half of the number of the pole components, wherein further the offset direction between two mutually successive pole components changes at least twice within the pole assembly.