Development of MnZn ferrite as a transformer core material for switsh-mode power supplies (SMPS)

In electronics, magnetic transformer using ferrite cores are widely applied. In the recent years the rapid growth in popularity of Switched Mode Power Supplies (SMPS) units has led to a corresponding demand for high frequency ferrite cored power transformer. The main motivation for using ferrite...

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Bibliographic Details
Main Author:	Maspol, Masdhiah
Format:	Thesis
Language:	English English
Published:	2001
Subjects:	Ferrite cores - Case studies Ferrites (Magnetic materials)
Online Access:	http://psasir.upm.edu.my/id/eprint/9195/1/FSAS_2001_5_IR.pdf
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id	my-upm-ir.9195
record_format	uketd_dc
spelling	my-upm-ir.91952024-02-02T04:06:10Z Development of MnZn ferrite as a transformer core material for switsh-mode power supplies (SMPS) 2001-07 Maspol, Masdhiah In electronics, magnetic transformer using ferrite cores are widely applied. In the recent years the rapid growth in popularity of Switched Mode Power Supplies (SMPS) units has led to a corresponding demand for high frequency ferrite cored power transformer. The main motivation for using ferrite transformer cores is the dramatic reduction of eddy current losses when compared with traditional iron core transformer. This study has been carried out to improve processing and understand the loss mechanisms of manganese zinc (MnZn) ferrite to meet the SMPS requirements. The preparation of the samples was typical for MnZn ferrite production utilizing wet method technique. The experimental work was divided into three parts namely the effect of composition, the effect of atmosphere control and the effect of additives. The effect of composition showed that MnZn ferrite sample with chemical composition of (MnO)0.335(ZnO)0.130 (Fe203)0.535 yield high initial permeability. µi values. The effect of controlling of the sintering atmosphere with the same composition did not achieve the desired result.µi dropped and Relative Loss Factor decreased. The effect of additives showed that 1n203 addition suppresed grain growth and V 20S cause duplex structure. which is the main reason, the µi declined. This can be concluded that to improve the magnetic characteristics is by controlling the microstructure by having an appropriate and proper controlling sintering scheme. Ferrite cores - Case studies Ferrites (Magnetic materials) 2001-07 Thesis http://psasir.upm.edu.my/id/eprint/9195/ http://psasir.upm.edu.my/id/eprint/9195/1/FSAS_2001_5_IR.pdf text en public masters Universiti Putra Malaysia Ferrite cores - Case studies Ferrites (Magnetic materials) Faculty of Environmental Studies Hashim, Mansor English
institution	Universiti Putra Malaysia
collection	PSAS Institutional Repository
language	English English
advisor	Hashim, Mansor
topic	Ferrite cores - Case studies Ferrites (Magnetic materials)
spellingShingle	Ferrite cores - Case studies Ferrites (Magnetic materials) Maspol, Masdhiah Development of MnZn ferrite as a transformer core material for switsh-mode power supplies (SMPS)
description	In electronics, magnetic transformer using ferrite cores are widely applied. In the recent years the rapid growth in popularity of Switched Mode Power Supplies (SMPS) units has led to a corresponding demand for high frequency ferrite cored power transformer. The main motivation for using ferrite transformer cores is the dramatic reduction of eddy current losses when compared with traditional iron core transformer. This study has been carried out to improve processing and understand the loss mechanisms of manganese zinc (MnZn) ferrite to meet the SMPS requirements. The preparation of the samples was typical for MnZn ferrite production utilizing wet method technique. The experimental work was divided into three parts namely the effect of composition, the effect of atmosphere control and the effect of additives. The effect of composition showed that MnZn ferrite sample with chemical composition of (MnO)0.335(ZnO)0.130 (Fe203)0.535 yield high initial permeability. µi values. The effect of controlling of the sintering atmosphere with the same composition did not achieve the desired result.µi dropped and Relative Loss Factor decreased. The effect of additives showed that 1n203 addition suppresed grain growth and V 20S cause duplex structure. which is the main reason, the µi declined. This can be concluded that to improve the magnetic characteristics is by controlling the microstructure by having an appropriate and proper controlling sintering scheme.
format	Thesis
qualification_level	Master's degree
author	Maspol, Masdhiah
author_facet	Maspol, Masdhiah
author_sort	Maspol, Masdhiah
title	Development of MnZn ferrite as a transformer core material for switsh-mode power supplies (SMPS)
title_short	Development of MnZn ferrite as a transformer core material for switsh-mode power supplies (SMPS)
title_full	Development of MnZn ferrite as a transformer core material for switsh-mode power supplies (SMPS)
title_fullStr	Development of MnZn ferrite as a transformer core material for switsh-mode power supplies (SMPS)
title_full_unstemmed	Development of MnZn ferrite as a transformer core material for switsh-mode power supplies (SMPS)
title_sort	development of mnzn ferrite as a transformer core material for switsh-mode power supplies (smps)
granting_institution	Universiti Putra Malaysia
granting_department	Faculty of Environmental Studies
publishDate	2001
url	http://psasir.upm.edu.my/id/eprint/9195/1/FSAS_2001_5_IR.pdf
_version_	1794018799219900416

Development of MnZn ferrite as a transformer core material for switsh-mode power supplies (SMPS)

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