Utilizing Full Saturation and Power Loss To Maximize Power Transfer In Magnetic Components

Focus:

To optimize magnetic component design, electrical (winding) and magnetic (core) power losses should be made equal to maximize power transfer from input winding to output winding. Utilization of the core is maximized when the winding window area is full of wire and the core is driven to near saturation while dissipating the desired maximum power loss. To achieve these optima, a multiplicity of design parameters must be just right including input and output voltages, number of turns, current ripple factor, field-referred inductance, and core power-loss density. This article will describe how to determine these parameters in a power conversion application, so that maximum power transfer can be achieved for a given core material at the smallest possible core size. At the same time, this discussion will help designers understand how to optimize their choice of core material for a given application.

What you’ll learn:

• How to maximize a power transfer in a transformer for a given core material in a given power converter application
• How to select core material for maximum power transfer in a power transformer

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Author & Publication:

Dennis Feucht, Innovatia Laboratories, Cayo, Belize, How2Power Today, Feb 28 2011

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