Core loss characteristics of Fe-based amorphous alloys

Relations of core losses with the peak inductions and magnetizing frequencies of Fe-based amorphous alloys were investigated. Core losses of these Fe-based amorphous alloys were measured under sinusoidal induction at the frequency range from 50 Hz to 1 kHz and various inductions from 0.6 T to 1.0 T. The results indicated that the core losses of Fe-based amorphous alloys significantly depended on their components. The core loss separation calculated by the scaling theory suggests that the core loss at a frequency of 1 kHz and an induction of 1 T can be reduced to 7.77 W/kg and the percentage of the eddy-current loss can be lower than 17% by adjusting the components of Fe-based amorphous alloys.