basic module of magnetic transformer core, magnetic core comprising said basic module, manufacturing method of said magnetic core and transformer comprising said magnetic core

摘要

The invention relates to a basic magnetic core module for a coiled electrical transformer. said basic module is distinguished by the fact that it consists of a first (1, 2) and a second (3, 4) windings which are placed one above the other and produced from a first and a second material respectively. said first material is a crystalline material having a saturation magnetization (js) equal to or greater than 1.5 t, and magnetic losses less than 20 w / kg of 400 Hz frequency sine waves, for a maximum induction of 1 t, and said second material is a material with apparent saturation magnetostriction (¿sat) equal to or less than 5 ppm, and magnetic losses less than 20 w / kg of 400 Hz frequency sine waves, for a maximum induction of 1 t. the cross sections (s1; s2) of the first winding (1; 2) and the cross sections (s3; s4) of the second winding (3; 4) are such that the ratio (s1 / (s1 + s3); s2 / ( s2 + s4)) of the first material, which has a high saturation magnetization (js) compared to the cross section of the two materials as a whole, is between 2% and 50%, preferably between 4% and 40%. The invention also relates to a magnetic core of an electrical transformer comprising at least one such basic module, a method of manufacturing said magnetic core, and a transformer comprising said magnetic core.