View Item 

Effects of Iron-Core Topology on Inrush Currents in Three-Phase Multi-Leg Power Transformers

Access Status
Open access
Authors
Moses, Paul
Masoum, Mohammad
Moghbel, Moayed
Date
2012
Type
Conference Paper

Metadata
Show full item record
Citation
Moses, P.S. and Masoum, M.A.S. and Moghbel, M. 2012. Effects of Iron-Core Topology on Inrush Currents in Three-Phase Multi-Leg Power Transformers, in IEEE Power and Energy Society General Meeting, Jul 22-26 2012. San Diego, CA, USA: IEEE.
Source Title
Proceedings of the IEEE PES General Meeting, 2012
Source Conference
2012 IEEE PES General Meeting
DOI
ISBN
Remarks

Copyright © 2012 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

URI
Collection
Abstract

This paper investigates the inrush currents of three-phase (a)symmetric multi-leg transformer cores considering magnetic core structure (e.g., three-leg vs. five-leg) and switching effects (e.g., recloser operating). The electromagnetic steady-state and transient behavior of three-phase transformers significantly differs from single-phase transformer operation mainly because of the unique flux coupling interactions in multi-leg and asymmetric core structures. A recently developed three-leg nonlinear transformer core model is applied to this study which considers the influence of magnetic hysteresis, flux couplings in the core-structure and nonsinusoidal operation in three-phase transformers. Simulations results for multi-leg (e.g., three-leg and five-leg) transformer cores demonstrating inrush current behavior based on the model are presented and discussed.