Core Loss Studies using FEM of a Three Phase Isolation Transformer under Harmonic Conditions

被引：2

作者：

Malekpour, Majid ^{[1
]}

Larkin, Michael ^{[1
]}

Phung, Toan ^{[2
]}

机构：

[1] Tortech Pty Ltd, Sydney, NSW, Australia

[2] Univ New South Wales, Sch Elect Engn & Telecommun, Sydney, NSW, Australia

来源：

2019 9TH INTERNATIONAL CONFERENCE ON POWER AND ENERGY SYSTEMS (ICPES) | 2019年

关键词：

Core-loss studies; Finite element analysis; Isolation transformer; Transformer losses; Voltage harmonics;

D O I：

10.1109/icpes47639.2019.9105489

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

This paper aims to investigate the effect of voltage harmonics on transformer core losses. A three-dimensional finite element method (FEM) is employed to model a three-phase isolation transformer supplied by a contaminated power source. The effect of harmonics is accurately modelled in FEM. The proposed model in FEM is verified by experiment where the results obtained using FEM show good agreement with experimental results. Different case studies with different harmonic conditions are investigated. The results show an increase in the core loss value up to 67.3% when the input voltage is formed based on the highest percentage of harmonic orders stated in the IEC 61000-3-6. As the core loss is always present, the energy loss continuously accumulates. Thus, voltage harmonics contribute to increase in the core loss in transformers.

引用

页数：5

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