Calculation of transformer core losses with nonlinear loads

Author

Ran, L. ; Smith, K.S. ; Liao, Y. ; Putrus, G.A.

Author_Institution

Northumbria Univ., Newcastle upon Tyne, UK

Volume

2

fYear

2002

fDate

6-9 Oct. 2002

Firstpage

682

Abstract

This paper presents an analytical method to calculate the core losses in a distribution transformer supplying nonlinear loads. The distribution of flux in the core is derived using the magnetizing voltage obtained from a series of frequency domain harmonic equivalent circuits. The flux which contains harmonics is then used to calculate the eddy current and hysteresis losses. An approximation is proposed for the B-H relationship. The method is verified by experiments.

Keywords

eddy current losses; equivalent circuits; harmonic analysis; magnetic flux; magnetic hysteresis; power transformers; transformer cores; 120 V; 2 kVA; 240 V; B-H relationship; core flux; distribution transformer; eddy current calculation; frequency domain harmonic equivalent circuits; harmonic analysis; hysteresis loss calculation; magnetic core losses; magnetizing voltage; nonlinear loads; transformer core losses; Core loss; Eddy currents; Equivalent circuits; Frequency domain analysis; Hysteresis; Magnetic analysis; Magnetic cores; Magnetic domains; Magnetic flux; Transformer cores;

fLanguage

English

Publisher

ieee

Conference_Titel

Harmonics and Quality of Power, 2002. 10th International Conference on

Print_ISBN

0-7803-7671-4

Type

conf

DOI

10.1109/ICHQP.2002.1221517

Filename

1221517