A RELUCTANCE TECHNIQUE FOR APPROXIMATING THE PERFORMANCE OF LARGE AIR GAP TRANSFORMERS

摘要

This report develops a magnetic path reluctance technique for approximating the characteristics of transformers with large air gaps - air gaps which can exceed some dimensions of the core itself. All known standard references for the magnetics designer will stop short of truly large air gaps leaving a void for the designer with special air gap requirements. The designer's only recourse was to make a best guess and proceed through an iterative building process until the design fits the need. By application of the simple relationships developed in this report, the designer can approximate the transformer performance from manufacturer's catalog information thus reducing costs and time required by shortening the iterative building processes.