An Accurate Frequency-Dependent Analytical Expression for Leakage Inductance Calculation in High Frequency Transformers
Year: 2014
Type: article
Abstract: Pushing magnetic components towards higher power densities, which is often realized by increasing the operating frequency, leads to the need for the development of more accurate design tools, for example more accurate expressions for core losses, winding losses and leakage inductance calculations.This paper presents a new analytical expression intended to accurately evaluate the leakage inductance of transformers in the high frequency range in which the behavior of the magnetic field within the windings is altered.Unlike conventional expressions, which usually overestimate the leakage inductance at higher frequencies, this expression accounts for high frequency behavior of the magnetic field and provides high accuracy when operating at high frequencies.These high accuracy and applicability makes the derived expression of interest for designers to avoid time consuming finite element simulations without compromising with accuracy.The expression is validated by 2-D FEM simulation, as well as by measurements.
Authors: Amin Bahmani, Torbjörn Thiringer
Language: English
Topic: Advanced DC-DC Converters
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W94433244