Measurement sensor of the iron losses for toles magnetic field rotating.

摘要

The present invention relates to a method of measuring the iron losses in specimens of magnetic laminations intended for use in an electrical machine, characterised in that an induction field (B) is created in an air gap formed with the lamination specimens (1, 11) on which measurements are to be made, the field (B) having a distribution in space and time close to that desired in the electrical machine in which the lamination specimens (1, 11) are to be used; a relative movement between the induction field (B) and the lamination specimens (1, 11) is produced in the direction along which the lamination specimens extend; the drag force exerted on the specimens is detected, this force corresponding to the driving force on these specimens in the direction of movement, and the iron losses (P) are calculated by multiplying the detected drag force (F,C) and the speed of movement (v.w). IMAGE