segmented magnetic circuit

Abstract

The invention relates to a magnetic circuit (1) for a rotary electric machine, comprising: stacks (2) of plates stacked in sections, the stacks being at their opposite flanks (3, 4) with socketed reliefs; and inserts introduced into openings defined at least in part by the sockets of these reliefs, which inserts ensure that the segments are connected in Together.

Description

technical field [0001] This invention relates to rotary electric machines, and more particularly to magnetic circuits for such machines. Background technique [0002] Excitation-induced magnetic circuits usually consist of stacks of plates. The sheets are often cut adjacently from a strip having a width substantially equal to the outer diameter of the inductor. It is also possible to cut these magnetic circuits into sections. Each segment then forms an angular fraction of a full revolution. The segments are then reassembled and stacked to form a complete magnetic circuit. [0003] In the first case, the difference between the consumed magnetic slab and the material actually required to conduct the magnetic flux is very large. It is not uncommon for the raw material used to represent twice as much material as is useful for flux passage. [0004] In the second case, the production in segments makes it possible to minimize the material consumed, since the smaller this angu...

AI Technical Summary

Problems solved by technology

However, it is difficult to assemble and reconstruct a correct geometry and maintain this geometry during the winding operation

In general, the smaller the angular portion covered by a segment, the more complex the generation of the plate stack

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