Method for producing the coil of a rotary electric machine stator and stator thus obtained

摘要

A stator which comprises
a core, slots provided in the core and a coil comprising a plurality of windings,

in which each winding consists of at least one conductor which is arranged in slots of the core associated with the winding, forming axial ripples and forming overall a spiral coaxial to axis A of the core which consists of a set of turns radially superimposed,

wherein each conductor comprises a pair of electrical lead wires which are adjacent and which are arranged at the same radial dimension relative to one another, at each point of the conductor. The invention also proposes a method for constructing the stator.

主权项

1. A stator for an electrical machine having an axis (A), comprising:
a) a plurality of axially extending slots; b) within every slot of a subset of the slots, at least four sections of conductor, arranged so that
i) a first section of conductor and a second section of conductor are both located at a first radial distance from the axis (A);ii) a third section of conductor and a fourth section of conductor are both located at a second radial distance from the axis (A); c) a plurality of connecting sections which
i) connect all first sections of conductor in electrical series with each other to form a first continuous winding;ii) connect all second sections of conductor in electrical series with each other to form a second continuous winding;iii) connect all third sections of conductor in electrical series with each other to form a third continuous winding which is electrical series with the first sections of conductor; andiv) connect all fourth sections of conductor in electrical series with each other to form a fourth continuous winding which is in electrical series with the second sections of conductor; in which a pair of electrical conductors begin at a first slot and terminates at an Nth slot, and which forms a first layer in said slots, and in which: d) said pair of electrical conductors reverses direction at the Nth slot, and runs through the same slots in reverse sequence to form a second layer, such that all members of said pair of electrical conductors, within the slots in the second layer are located at the same radial distance D2 from the axis.