Comparison of Analytical Method and Different Finite Element Models for the Calculation of Leakage Inductance in Zigzag Transformers

Kamran Dawood*, Fatih Isik, Guven Komurgoz

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

A zigzag transformer is a key segment of the electric power system. The optimal design of the zigzag transformer is important for transformer designers to provide a required return path for earth faults and to ensure proper operation of a power system. The two most important parameters of the zigzag transformers are no-load losses and leakage impedance. The accurate calculation of both factors helps to minimize the overall cost of the transformer. Therefore, the prediction of leakage reactance in the zigzag transformer using analytical or numerical methods is an essential part of the early designing stages of the transformer. This paper provides several two- and three-dimensional finite element models. The main purpose of these models is to evaluate the accuracy of the different models for the calculation of the leakage reactance. An analytical formula and a complete procedure for the calculation of the leakage reactance in the zigzag transformer are also provided, which will help the researchers and transformer designer to optimize this type of transformer. The prototype is also manufactured and tested to verify the accuracy of the analytical method and finite element models for the calculation of the leakage reactance. The simulation and experimental results show that the finite element calculation cannot only obtain accurate leakage reactance values (magnetostatic analysis), but also provides better accuracy in the no-load losses (transient analysis).

Original languageEnglish
Pages (from-to)16-22
Number of pages7
JournalElektronika ir Elektrotechnika
Volume28
Issue number1
DOIs
Publication statusPublished - 2022

Bibliographical note

Publisher Copyright:
© 2022 Kauno Technologijos Universitetas. All rights reserved.

Funding

Manuscript received 3 June, 2021; accepted 1 February, 2022. This research was supported by the TUBİTAK under Grant No. 118C109; Istanbul Technical University Bilimsel Araştırma Projeleri under Grant No. MGA-2020-42527. This research was supported by the TUB?TAK under Grant No. 118C109; Istanbul Technical University Bilimsel Ara?t?rma Projeleri under Grant No. MGA-2020-42527.

FundersFunder number
Istanbul Technical University Bilimsel Ara?t?rma
Istanbul Technical University Bilimsel Araştırma ProjeleriMGA-2020-42527
TUB?TAK
TUBİTAK118C109

    Keywords

    • Finite element method
    • Grounding transformer
    • Leakage reactance
    • Magnetostatics analysis
    • Transient analysis
    • Zigzag transformer

    Fingerprint

    Dive into the research topics of 'Comparison of Analytical Method and Different Finite Element Models for the Calculation of Leakage Inductance in Zigzag Transformers'. Together they form a unique fingerprint.

    Cite this