公开(公告)号：US20170345554A1

公开(公告)日：2017-11-30

申请号：US15529339

申请日：2014-11-25

Applicant: APERAM

Inventor： Thierry WAECKERLE ,  Alain DEMIER

IPC: H01F27/28

CPC classification number: H01F27/2847 ,  H01F3/14 ,  H01F27/25 ,  H01F27/26 ,  H01F27/33 ,  H01F41/0213 ,  H01F41/0226 ,  H01F2003/106

Abstract: Disclosed is a basic module of a magnetic core of a wound electrical transformer. The basic module includes first and second windings placed atop one another and made of first and second materials, respectively. The first material is a crystal having a saturation magnetization ≧1.5 T and magnetic losses less than 20 W/kg in sine waves having a frequency of 400 Hz, for maximum induction of 1 T, and the second material is a material having an apparent saturation magnetostriction less than or equal to 5 ppm and magnetic losses less than 20 W/kg in sine waves having a frequency of 400 Hz, for maximum induction of 1 T. The cross-sections of the first winding and cross-sections of the second winding satisfy (S1/(S1+S3); S2/(S2+S4)) of the first material, having a high saturation magnetization, compared to the cross-section of both materials together, is 2%-50%.