Multi-winding multi-phase transformer model with saturable core

Author

Mohseni, H.

Author_Institution

Fac. of Eng., Tehran Univ., Iran

Volume

6

Issue

1

fYear

1991

fDate

1/1/1991 12:00:00 AM

Firstpage

166

Lastpage

173

Abstract

A model is presented for a multiwinding multiphase transformer developed by the nodal inverse inductance matrix (NIIM). To obtain the NIIM the inverse of the inductance matrix is needed. Due to the strong magnetic coupling among the windings, the inductance matrix of a transformer is ill-conditioned. A new way is described to find the inverse of the inductance matrix for transformers. Core saturation and hysteresis effect are also considered. The model can be used to calculate the transients in the windings, ferroresonance, and inrush currents and to perform steady-state analysis in complicated winding arrangements and network configurations

Keywords

matrix algebra; power transformers; transformer cores; transformers; windings; NIIM; ferroresonance; hysteresis effect; inductance matrix; inrush currents; magnetic coupling; multiwinding multiphase transformer; nodal inverse inductance matrix; saturable core; steady-state analysis; transients; Circuit faults; Couplings; Ferroresonance; Inductance; Magnetic cores; Magnetic hysteresis; Saturation magnetization; Surges; Transformer cores; Transient analysis;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/61.103736

Filename

103736