Generate Hysteresis Curves From Magnetic Core Datasheet Parameters

Focus:

When designing magnetic components such as inductors, transformers and electromagnets (including solenoids), it is desirable to have a hysteresis curve available for accurate calculations and, in general, to have a better understanding of a magnetic core’s capabilities. However, magnetic core manufacturers seldom provide full hysteresis loops for their products, limiting the parameters to the saturation flux density, remanence and permeability. But it is possible to build a hysteresis curve based on these parameters and to predict the magnetic parameters’ behavior at different magnetizing currents. In a previous work it was shown that a hysteresis curve going through the zero point of the coordinates and describing materials having negligible coercive force, may be represented with an exponential function. This article introduces analysis for a hysteresis curve describing materials having substantial coercive force. Article includes an example where the author verifies his method and uses the analytical expression for the hysteresis loop to compute the core power loss.

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Author & Publication:

Gregory Mirsky, Continental Automotive Systems, Deer Park, Ill., How2Power Today, Nov 15 2016

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