Abstract

Based on a 3-D magnetic test system with frequency domain feedback control method, core loss measurement of soft magnetic composite materials (SMC) under both sinusoidal and non-sinusoidal excitations is performed. In terms of the harmonic order, content and phase angle, the influence of harmonic for core loss are analyzed based on magnetic domain theory. The Modified Steinmetz Equation (MSE) is used to predict the core loss. The experimental results are convincing by comparing the results from three directions without changing the position of the sample, thence the validity of above theoretical methods is verified.

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