Behavior of three-phase transformers supplying non linear loads using time domain representation and finite element analysis

Author

Delaiba, Antijnio Carlos ; De Oliveira, Jose Carlos ; Cardoso, Jose Roberto ; Nabeta, Silvio U.

Author_Institution

Fed. Univ. of Uberlandia, Brazil

Volume

34

Issue

5

fYear

1998

fDate

9/1/1998 12:00:00 AM

Firstpage

3174

Lastpage

3177

Abstract

This paper aims to present and discuss the magnetic and electrical results derived from three-phase power transformers modeling under nonlinear load conditions. The approach uses time-domain techniques and the finite element method. The transformer internal electromagnetic equations and the external equivalent circuit are simultaneously solved through a well-established computational package. The nonlinear load is a 6-pulse rectifier supplied by a nonlinear modeled power transformer. The waveform for different currents and voltages, as well as the flux line distribution are given and fully described. The results obtained from the simulation are compared to experimental tests

Keywords

electromagnetic fields; equivalent circuits; finite element analysis; load (electric); magnetic flux; power transformers; time-domain analysis; computer simulation; current waveforms; external equivalent circuit; finite element method; flux line distribution; internal electromagnetic equations; nonlinear loads; six-pulse rectifier; three-phase power transformers; time-domain techniques; voltage waveforms; Equivalent circuits; Finite element methods; Load modeling; Magnetic flux; Nonlinear equations; Packaging; Phase transformers; Power transformers; Rectifiers; Time domain analysis;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.717744

Filename

717744