STACKED CORE AND ROTATING ELECTRIC MACHINE Russian patent published in 2025 - IPC H02K1/18 H02K15/02 H01F3/02 

FIELD: electrical engineering.

SUBSTANCE: stacked core comprises multiple stacked sheets of electrical steel and multiple adhesive layers located between sheets of electrical steel next to each other in direction of laying. Electrotechnical steel sheet includes annular body. At least one of the plurality of adhesive layers (41) is a first adhesive layer. In one sheet of two sheets of electrical steel, placing in the middle the first adhesive layer in the laying direction, when the imaginary axis crossing the central axis of the annular body and continuing in the easy magnetization direction is set as the L-axis, imaginary axis intersecting with central axis and intersecting with L-axis is set as C-axis, and the electrical steel sheet is divided into a plurality of sections (S) in the circumferential direction of the annular body by the L-axis and the C-axis. At least one section of the plurality of sections is the first section. In the first section, the area of the first adhesive layer in the first section (P1) of the electrical steel sheet, in which the main magnetic flux is formed in the L-axis direction, is less than the area of the first adhesive layer in the second section (P2) of the electrical steel sheet, in which the main magnetic flux is formed is formed in direction along C-axis.

EFFECT: reduction of losses in iron and losses in copper at maintenance of holding force for laying and fixation of stacked core.

18 cl, 16 dwg, 2 tbl