Abstract
A simple and practical method of correcting the hysteresis loss in a thin lamination for the effects of minor loops is described. The necessary correction is applied to the losses that would occur under conditions of sinusoidal flux density and the required empirical factor is derived using a broad range of loss measurement data. It is shown that the correction, to a very good approximation, varies linearly with the unweighted algebraic sum of the flux density reversals in the driving waveforms. Used together with a similar factor that corrects the eddy current component of loss for the effects of flux density harmonics, the total loss can be easily estimated to an accuracy of less than 5%.
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