How To Calculate Winding Packing Factor

Focus:

How does the space between wires in transformer or inductor windings affect magnetic design? The short answer is that it affects a variable known as packing factor, which in turn, is useful in selecting a transformer or inductor core with an eye toward optimizing the efficiency or power transfer of the magnetic component. The role of packing factor kp has been discussed in previous articles in this column and other literature. In those earlier discussions, the role of kp has been touched on to varying degrees, and the factors influencing kp have only been discussed in passing. This article explores the interplay between wire size, wire geometric configuration and window end effects for magnetic components wound with round wire.

What you’ll learn:

• How to understand the influence of wire size, wire geometric configuration and window end effects on wire packing factor kp which influences core selection for transformer and inductor design

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Author & Publication:

Dennis Feucht, Innovatia Laboratories, Cayo, Belize, How2Power Today, Nov 16 2016

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