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Finite Element Method Based Determination of Magnetic Loading of Three-Phase Five-Limb Transformer with Impact of DC Offset

  • Saurabh KohliEmail author
  • S. B. Mahajan
  • S. M. Badave
  • Padmanaban Sanjeevikumar
  • Atif Iqbal
Chapter
Part of the Lecture Notes in Electrical Engineering book series (LNEE, volume 436)

Abstract

In this article, modelling mechanism based on finite element method (FEM) to understand the impact of DC currents on the magnetic loading of the three-phase five-limb transformer is articulated. This paper provides detailed features of magnetizing current variations and progressions of harmonics in transformer. On variation of primary voltage and injecting DC currents based on a weakly coupled multi-harmonic approach, the three-phase five-limb transformer is subjected to irregular magnetizing currents with formation of odd and even harmonics based on saturation level of transformer. Furthermore, the scaled transformer is modelled and it is visualized that the stray fluxes and the saturation levels of the five-limb transformer raise to a higher level on impact of DC currents of varying magnitudes. The analysis of proposed work is performed using ANSYS tool for generating the scaled transformer model and MATLAB for plotting the results which validates the proposed concept.

Keywords

Three-phase five-Limb transformer model DC impact Half-cycle saturation Harmonics Magnetizing currents Geomagnetically induced currents 

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Copyright information

© Springer Nature Singapore Pte Ltd. 2018

Authors and Affiliations

  • Saurabh Kohli
    • 1
    Email author
  • S. B. Mahajan
    • 1
  • S. M. Badave
    • 1
  • Padmanaban Sanjeevikumar
    • 2
  • Atif Iqbal
    • 3
  1. 1.Department of Electrical & Electronics EngineeringMarathwada Institute of TechnologyAurangabadIndia
  2. 2.Department of Electrical & Electronics EngineeringUniversity of JohannesburgAuckland Park, JohannesburgSouth Africa
  3. 3.Department of Electrical EngineeringMuslim Aligarh UniversityAligarhIndia

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