Roshen’s Models Offer An Advanced Approach To Modeling Core Losses

Focus:

Waseem Roshen modeled both core losses (like Steinmetz) and winding losses (like Dowell) in magnetic components. This article explains how Roshen models the three sources of core losses—hysteresis, classical eddy current and excess eddy current losses—and discusses how these models compare with Steinmetz-derived models. Roshen’s models enable calculation of core losses taking into account the shape of the ferrite core and for any given excitation waveform. However, they also require some advanced knowledge of software to implement. The article begins by reviewing the physics of core losses and Steinmetz’s approach to finding core losses.

What you’ll learn:

• How to model core losses in magnetic components more accurately using Roshen’s models
• How to understand how Roshen’s models for core losses compare with Steinmetz derived models
• How to understand the physics of core losses

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Author & Publication:

Alfonso Martínez, AutoPlanar, Madrid, Spain, How2Power Today, Sep 15 2022

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