Magnetics Optimization (Part 1): Equal Core And Winding Losses Do Not Maximize Power Transfer

Focus:

This two-part article reexamines loss optimization in the design of transformers and coupled inductors (collectively known as transductors.) It shows that equalizing electrical (winding) and magnetic (core) losses does not maximize power transfer through the transductor. Refined criteria for power-transfer optimization are derived from the secondary-referred circuit model. Using example transductor values, the derived equations are plotted to illustrate the discrepancy between conditions for peak efficiency and the conditions under which core loss equals winding loss. Factors that influence this discrepancy are discussed.

What you’ll learn:

• How to optimize power transfer in transformer and coupled inductor designs
• How to understand why equalizing core and winding losses does not maximize power transfer in magnetic components

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Author & Publication:

Dennis Feucht, Innovatia Laboratories, Cayo, Belize, How2Power Today, Sep 15 2015

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