Electric shunt induction winding and automatic lamination cutting machine therefore

• US 4,453,150 A
• Filed: 05/12/1981
• Issued: 06/05/1984
• Est. Priority Date: 05/12/1980
• Status: Expired due to Fees

• Current Assignee: Societe Anonyme DETE Alsthom-Atlantique
• Original Assignee: Alsthom-Atlantique
• Inventors: Faure, Michel, Messe, Gerard, Ducombs, Marcel
• Primary Examiner(s): Truhe, J. V.
• Assistant Examiner(s): Steward, Susan A.
• Application Number:
  US06/262,878
• Time in Patent Office: 1,120 Days
• Field of Search: 336/178, 336/212, 336/219, 336/233, 336/234
• US Class Current: 336/234
• CPC Class Codes: H01F 27/245 made from sheets, e.g. grain-oriented H01F27/26 takes precedence
• CPC Class Codes: Y10T 83/205 By timed relocation of holder along path of stack gscheme-change-itemth
• CPC Class Codes: Y10T 83/546 Interrelated tool actuating and work guide moving means
• CPC Class Codes: Y10T 83/5815 Work-stop abutment
• CPC Class Codes: Y10T 83/7613 Adjustable

Abstract

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 (F₁) 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.

Claims

1. An electric shunt induction winding for an electric power transport line, said winding having a magnetic core with an electric coil and a magnetic barrel winding round said coil to close the magnetic circuit, said magnetic core comprising a vertical stack of iron disks separated from one another by air gaps, each disk having a central hole and being constituted by juxtaposing a plurality of sector-shaped portions, each sector-shaped portion comprising a succession of magnetic laminations situated in vertical planes which are parallel to the axis of the electric winding, each said sector-shaped portion being formed by a first bundle of laminations all of identical length and by a second bundle of laminations of regularly decreasing lengths from one sheet to the next, the improvement wherein the direction in which the laminations are rolled in the mill is perpendicular to the axis of the winding.