Patent ID: 8181332
Filing Date: 2012-05-22
Classification: H02K,Y10T

Abstract:
1. A method of inserting a wave winding into a stator of a polyphase rotating electrical machine, the stator comprising: (A) laminations with a hole through the center and having an axis of symmetry and (B) slots running axially along a radially inner faceof the laminations, these slots providing a plurality of receiving positions arranged in tiers radially, and (C) the winding comprising a plurality of phase windings each having an electrically conductive continuous wire, the method comprising the following steps: shaping each winding, the wire thereof being formed into a succession of crenellations connected by linking segments, each crenellation comprising two lateral branches facing one another each intended to be inserted at a receiving position of a slot, and a top branch connecting the two lateral branches; placing the windings on an insertion tool; inserting the windings into the slots of the stator, wherein the step of placing the windings is implemented on a cylindrical insertion tool, each winding constituting several turns around the insertion tool, these turns being superimposed in a given order, and in that the windings are wound around the insertion tool at the same time, the turns that follow one another in said given winding order belonging alternately to the different windings; and in that the windings comprise overhangs; a) each of which runs from (i) a branch in one slot to (ii) another in another slot and runs along an axial end of the stator; b) in which an overhang located at a radially inner position in a slot has a transverse height which is relatively small; and c) in which an overhang located at a radially outer position in a slot has a transverse height which is relatively large.