Electro lamination measurementCopyright: © IEM
The accurate estimation of iron losses has become a prominent problem in electromagnetic design. Iron losses are calculated nowadays after considerable simplification. To increase the power density of electrical machines, a trend to higher fundamental frequencies operating the machine can be stated. With such elevated fundamental frequencies the desired high speeds can be realised. However, the increased frequency results in higher iron losses. Unfortunately, in addition to the increased losses, the magnetisation of the material decreases significantly. For the development of appropriate material models which consider such effects of the electro lamination at high frequencies and high values of flux density, IEM has purchased measurement equipment to determine the material properties of ferro-magnetic materials. To cover a frequency range of up to 10 kHz, several Epstein frames are available. A single sheet tester and a device for the measurement of ring shaped contours complete the equipment.