Question

Question 3 a. The energy loss per cycle for a magnetic material can be determined by finding the area contained within the BH loop, and this is 5 J for the material under test. If the magnetic excitation frequency is 100 kHz, determine the losses in Watts b. State the effect that higher magnetic material resistivity has on each of the three main types of core loss (i.e. hysteresis loss, excess eddy current loss, and classical eddy current loss), and justify your answer.

Answer 1

a)

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b) Hysteris loss remains unaffected due to resistivity. Both eddy current losses reduce as the resistance to the flow of eddy current increases due to increases resistivity.