Predicting Temperature Rise of Ferrite Cored Transformers

摘要

Characteristics of several ferrite core material grades will be discussed and compared. The behavior of core loss as a function of temperature, flux density and frequency will be examined. Formulas to estimate core losses, winding losses and resulting temperature rise will be presented. This paper is meant to help the reader understand the power losses that a transformer dissipates in the form of heat so that they can estimate a transformers temperature rise and design transformers that meet the temperature rise specifications of their application.