Magnetics Optimization (Part 3): Maximum Power Transfer Of Magnetics Circuit Model
by Dennis Feucht, Innovatia Laboratories, Cayo, Belize, How2Power Today, Apr 17 2017
Focus:
The first two parts of this four-part article showed the inadequacy of primary- or
secondary-referred circuit models of transductors (transformers or coupled inductors) for
deriving the condition of maximum power transfer across windings. This third part
introduces a more general yet simple circuit model, and from it derives the ratio of
winding to core loss for which power transfer is maximum. This derivation is quite lengthy
and before tackling that, this part presents an approximation of the winding loss to core
loss ratio for maximum power transfer. This approximation is itself a practical result
that designers can use to optimize efficiency of transformers and coupled inductors.
What you’ll learn:
- How to design transformers and coupled inductors for maximum efficiency
- How to determine the ratio of winding loss to core loss that produces maximum power transfer in inductors and transformers
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