This paper presents a new loss computation method for soft magnetic composite (SMC), which allows us to evaluate the loss for wide operating conditions. A formula for evaluation of eddy current and hysteresis losses is introduced. The effective volume fraction of the magnetic grain is determined from the sampled measured data. It is shown that the formula provides accurate estimate of the total loss in a toroidal SMC core. In addition, the loss of SMC inductor is shown to be also accurately evaluated at small computational burden using the proposed method.
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Satô et al. (2015) studied this question.
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