NDLI: Impacts of ferroresonance and inrush current forces on transformer windings

Content Provider	IET Digital Library
Author	Beyranvand, Morteza Mikhak Rezaeealam, Behrooz Faiz, Jawad Zare, Afshin Rezaei
Abstract	Deformation of the windings is one of the main causes of the power transformers failure. Here, for the first time, the electromagnetic forces exerted on the windings are computed in ferroresonance condition and compared with that of the inrush current for a typical power transformer. In both cases, the magnetic core of the transformer saturates and the leakage flux around the windings increases, which leads to large forces on the windings carrying high currents. Therefore, precise modelling of the transformer core is required to calculate the forces inside the transformer. For this purpose, the Jiles–Atherton vector hysteresis model is employed in conjunction with finite element method (FEM) to simulate the laminated grain-oriented steel core, and then the radial and axial forces inflicted on the windings are estimated.
Starting Page	914
Ending Page	921
Page Count	8
ISSN	17518660
Volume Number	13
e-ISSN	17518679
Issue Number	Issue 7, Jul (2019)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-epa/13/7
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-epa.2018.5193
Journal	IET Electric Power Applications
Publisher Date	2019-02-01
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Electromagnetic Forces FEM Ferroresonance Ferroresonance Condition Finite Element Analysis Finite Element Method Inrush Current Force Jiles–Atherton Vector Hysteresis Model Laminated Grain-oriented Steel Core Laminations Leakage Flux Linear Algebra Magnetic Core Numerical Analysis Power Transformer Power Transformer Winding Deformation Transformer And Reactors Transformer Core Transformer Cores Transformer Windings Vector
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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