Alsthom-atlantique

Societe Anonyme Dite: Alsthom-atlantique

Gerard Messe

Michel Faure

Marcel Ducombs

An automatic sheet metal cutting machine has a continuous supply of metal strips in adjustable lengths, at will. A reciprocating cutter cuts laminations from the metal strip and a receiver receives the laminations. The receiver includes a swiveling plate movable through an angle .alpha. at will about a pin perpendicular to the direction motion of the laminations. The receiver is lowered and moved downstream relative to the direction of motion of the laminations received thereby.

Automatic lamination cutting machine for electric shunt induction winding

An electrical shunt reactor coil comprises a rectangular magnetic frame in the form of two vertical members (1,2) interconnected at their ends by two horizontal yoke members (3,4). The frame members are constituted by respective stacks of magnetic laminations. A central core (7) extends across the middle of the frame parallel to the vertical members, and an electrical winding (6) is situated around the core. The horizontal yoke members are of width L which is less than the diameter of the winding and which is close or equal to the diameter of the central core. Magnetic shunts (20 to 23) are placed across the outside of the horizontal yoke members. The shunts are longer than the width L of the yoke members so that they overhang both sides thereof. The magnetic shunts are constituted by respective stacks of laminations extending parallel to the axis of the central core and at right angles to the laminations of the yoke members. The improvement lies in the magnetic shunts having the shape of a rectilinear rectangular parallelipipeds without tip members that extend towards the winding, thereby leaving a wide air gap at the ends of the winding. This helps to avoid hot spots and keeps the shunts out of the way of leads to the winding.

Electrical shunt reactor coil

This induction winding includes a magnetic core formed by a vertical stack of iron disks separated by air gaps. The disks (8) include a plurality of sector-shaped portions (1) each of which is constituted by a succession of magnetic laminations (6), a first part (12,13) of these laminations are all of identical length and a second part (14) are of regularly decreasing length from one lamination to the next. The direction (F.sub.1) in which the laminations are rolled in the mill is perpendicular to the axis (7) of the winding. The increased magnetic loss that this causes is compensated by the improved filling coefficient that can then be readily obtained.

Electric shunt induction winding and automatic lamination cutting

The invention relates to a device for tightening the core and the upper and lower cross pieces of a shunt inductance winding by means of a plurality of tie rods (5, 6, 7) which are preferably seven in number and which pass through the central hole of the core. A cup-shaped part (12) held by nuts (13) is fitted onto the tie rods, the outer wall of this part is threaded, a nut (14) is screwed onto this part (12) and bears against axially elastic washers (15).

Growing community of inventors

Maule, France

Gerard Messe