A review on 3-D magnetic property testing system for measuring rotational core loss of soft magnetic materials

In today´s world, the development of electromagnetic devices require the magnetic cores to be operated at higher frequency. Soft magnetic composite (SMC) materials are suitable for these applications because of their properties like high electrical resistivity which leads to the low eddy current loss, and 3-D magnetic isotropy which provides great design flexibility of various electromagnetic devices. On top of that, the prediction of core losses is very important in obtaining the optimum design of the electrical machines which is always aiming for high efficiency. This paper reviews the development of 3-D magnetic property testing system or 3-D tester in studying the rotational core loss of SMC materials based on the previous researches in the last decade.