METHOD AND STATION FOR THE CONSTRUCTION OF A STATOR WINDING WITH RIGID BARS FOR A ROTARY ELECTRICAL MACHINE

摘要

Method and station for the construction of a stator winding with rigid bars for a rotary electrical machine; an insulated wire of electrically conductor material and provided on the outside with an insulating layer is unwound from a coil; a final end of the insulated wire is bent in a “U” shape so as to create a bar having two legs connected to one another by a cusp; the insulated wire is transversely cut to separate the rigid bar from the remaining part of the wire; and the bar is inserted into a stator slot of a magnetic core of a stator; furthermore, the electrical conductivity is measured between the core and the outer surface of the insulated wire by means of a first electrode electrically and permanently connected to the core of the insulated wire and a second electrode, which rubs against the outer surface of the insulated wire.

主权项

1) A method for the construction of a stator winding (3) with rigid bars (4) for a rotary electrical machine; the method of construction comprises the steps of:
unwinding, from a coil (11), an insulated wire (12) comprising an electrically conductor core (13) and an insulating layer (14) arranged on the outside and surrounding the core (13); bending, in sequence, the final end of the insulated wire (12) in a “U” shape, so as to create a plurality of bars (4), each having two legs (5) connected to one another by a cusp (6); transversely cutting the insulated wire (12) in sequence, so as to separate the rigid bars (4) from the remaining part of the wire (12); inserting the rigid bars (4) into corresponding stator slots of a magnetic core (2) of a stator (1); and measuring the electrical conductivity between the core (13) and the outer surface of the insulated wire (12) by means of a first electrode (25), which is electrically and permanently connected to the core (13) of the insulated wire (12), and by means of a second electrode (26), which rubs against the outer surface of the insulated wire (12).